RxJS is a library for reactive programming that allows composing asynchronous and event-based programs using observable sequences. It provides the Observable type for pushing multiple values to observers over time asynchronously. Operators allow transforming and combining observables. Key types include Observable, Observer, Subject, BehaviorSubject, and ReplaySubject. Subjects can multicast values to multiple observers. Overall, RxJS is useful for handling asynchronous events as collections in a declarative way.
RxJs - demystified provides an overview of reactive programming and RxJs. The key points covered are:
- Reactive programming focuses on propagating changes without explicitly specifying how propagation happens.
- Observables are at the heart of RxJs and emit values in a push-based manner. Operators allow transforming, filtering, and combining observables.
- Common operators include map, filter, reduce, buffer, and switchMap. Over 120 operators exist for tasks like error handling, multicasting, and conditional logic.
- Marble diagrams visually demonstrate how operators transform observable streams.
- Creating observables from events, promises, arrays and iterables allows wrapping different data sources in a uniform API
Angular & RXJS: examples and use casesFabio Biondi
The document discusses using RxJS in Angular applications. It provides examples of using RxJS operators like interval, map, async pipe, filter, switchMap, exhaustMap, tap, scan, and reduce. Common use cases include handling events, making HTTP requests, managing application state, and manipulating data. RxJS can be used in components, directives, services, routing, forms, and more throughout an Angular application.
This document provides an overview of Angular 2 and related reactive programming concepts:
- It discusses fundamentals like reactive programming, functional reactive programming (FRP), and the observer design pattern.
- Related concepts like promises, Object.observe, and RxJS observables are explained.
- Angular 2 uses observables for forms, HTTP requests, the async pipe for change detection, and more. Pipes and change detection are also covered.
- The document compares promises and observables, and how RxJS implements observables for use in Angular 2. Bridging between different async patterns and observables is discussed.
- Questions are invited at the end regarding Angular 2 and related reactive
Here I discuss about reactive programming, observable, observer and difference between observable and promise.
Also discuss some of important operators like forkJoin, switchMap, from, deboucneTime, discardUntilChanged, mergeMap. I discuss some of observable creation function.
RxJS Operators - Real World Use Cases (FULL VERSION)Tracy Lee
This document provides an overview and explanation of various RxJS operators for working with Observables, including:
- The map, filter, and scan operators for transforming streams of data. Map applies a function to each value, filter filters values, and scan applies a reducer function over time.
- Flattening operators like switchMap, concatMap, mergeMap, and exhaustMap for mapping Observables to other Observables.
- Error handling operators like catchError, retry, and retryWhen for catching and handling errors.
- Additional explanation of use cases and common mistakes for each operator discussed. The document is intended to explain these essential operators for real world reactive programming use.
The document discusses the benefits of using RxJS observables over promises and events for managing asynchronous and reactive code in Angular applications. It explains key concepts like observers, subscriptions, operators, cold vs hot observables, and using RxJS with services and components. Example code is provided for creating observable data services to share data between components, composing asynchronous logic with operators, and best practices for managing subscriptions and preventing memory leaks. Overall, the document promotes a reactive programming style with RxJS for building maintainable and testable Angular applications.
RxJS & Angular Reactive Forms @ Codemotion 2019Fabio Biondi
The document discusses reactive forms in Angular, comparing them to template-driven forms. Reactive forms are built around Observable streams, handle dynamic value changes, and offer benefits like immutability, testability, and scalability compared to template-driven forms. It provides an overview of key concepts like FormControl, FormGroup, and FormBuilder and examples of how to implement basic and nested reactive forms, add validators, update forms dynamically, and handle form submission and arrays.
This document summarizes the new features and goals of RxJS version 5, which aims to improve the modularity, performance, debugging, and extensibility of the RxJS library. Key changes include making RxJS fully modular, improving performance by reducing allocations and call stack sizes, enhancing debugging with simpler operator implementations, and allowing better extensibility through subclassing Observables and maintaining Subject bi-directionality. Simpler unit tests using marble diagrams are also highlighted.
Angular - Chapter 4 - Data and Event HandlingWebStackAcademy
The document provides information about Angular data binding and event handling. It discusses how interpolation can be used to connect data from a component class to its template. It also explains how property binding and event binding allow two-way communication between the component class and template. Finally, it introduces ngModel for setting up two-way data binding between an input element and a property.
The document discusses various methods for sharing data between Angular components, including:
1) Parent to child components using @Input to pass data via templates.
2) Child to parent using @ViewChild and AfterViewInit lifecycle hook to access child component properties.
3) Child to parent using @Output and event emitters to emit data on user events like button clicks.
4) Between unrelated components using a shared service with RxJs Subjects to share stream of data between all components accessing the service.
This document summarizes a keynote presentation about Angular 2.0.0. It discusses the growth of the Angular community from 1.5 million users in October 2015 to 1.2 million users in September 2016 for Angular 1 and 623k users for Angular 2 in September 2016. It also outlines Angular's major release cycle and provides an overview of the core features and extensions of the Angular framework.
Http Service will help us fetch external data, post to it, etc. We need to import the http module to make use of the http service. Let us consider an example to understand how to make use of the http service.
AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML's syntax to express your application's components clearly and succinctly. AngularJS's data binding and dependency injection eliminate much of the code you would otherwise have to write. And it all happens within the browser, making it an ideal partner with any server technology.
Presentation about new Angular 9.
It gives introduction about angular framework.
Provides information about why we use angular,
additional features and fixes from old versions. It will clearly explain how to create a new angular project and how to use angular commands and their usages.
It will also explain about the key components like angular architecture, routing, dependency injection etc.,
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript. It is an update to AngularJS with a focus on mobile and typesafety. Major versions include Angular 1.x, 2.x, 4.x and 5.x. Angular uses components, services and modules to build applications with templates and styles. It is compiled to JavaScript using transpilation and supports AOT and JIT compilation. Common tools used with Angular include the Angular CLI, Webpack and Zone.js.
React is a JavaScript library created by Facebook and Instagram to build user interfaces. It allows developers to create fast user interfaces easily through components. React uses a virtual DOM to update the real DOM efficiently. Some major companies that use React include Facebook, Yahoo!, Airbnb, and Instagram. React is not a complete framework but rather just handles the view layer. It uses a one-way data binding model and components to build user interfaces.
A directive is a custom HTML element that is used to extend the power of HTML. Angular 2 has the following directives that get called as part of the BrowserModule module.
ngif
ngFor
If you view the app.module.ts file, you will see the following code and the BrowserModule module defined. By defining this module, you will have access to the 2 directives.
The document discusses Angular routing and provides an example implementation. It first generates components for home, about, userList and user pages. It then sets up routes in app.module.ts to link URLs like /home and /about to their corresponding components. Navigation links using routerLink are added. To handle empty/invalid URLs, a default route is set to redirect to /home. Sub-routes are created under /user linking /user/list to UserListComponent, which displays a list of users. Clicking a user name creates a child route passing the name as a parameter to the UserComponent to display that user's details page.
This document introduces TypeScript, a typed superset of JavaScript that compiles to plain JavaScript. It discusses TypeScript's installation, why it is used, main features like type annotations and classes, comparisons to alternatives like CoffeeScript and Dart, companies that use TypeScript, and concludes that TypeScript allows for safer, more modular code while following the ECMAScript specification. Key benefits are highlighted as high value with low cost over JavaScript, while potential cons are the need to still understand some JavaScript quirks and current compiler speed.
NgRx is a framework for building reactive applications in Angular with the Management of States. NgRx is inspired by the Redux pattern - unifying the events in your application and deriving state using RxJS.
At a high level, NgRx stores a single state and uses actions to express state changes. It makes Angular development easier by simplifying the application’s state in objects and enforcing unidirectional data flow.
It is established with 5 main components - Store, Actions, Reducers, Selectors, and Effects.
Explanation of the fundamentals of Redux with additional tips and good practices. Presented in the Munich React Native Meetup, so the sample code is using React Native. Additional code: https://github.com/nacmartin/ReduxIntro
Introduction to angular with a simple but complete projectJadson Santos
Angular is a framework for building client applications in HTML, CSS and TypeScript. It provides best practices like modularity, separation of concerns and testability for client-side development. The document discusses creating an Angular project, generating components, binding data, using directives, communicating with backend services, routing between components and building for production. Key steps include generating components, services and modules, binding data, calling REST APIs, defining routes and building the app.
Validating user input for accuracy and completeness helps in improving overall data quality. Angular and its form package turns up with a Validators class that has some beneficial validators like minLength, maxLength, required and pattern. However, occasionally if we wish to validate different fields under more complex/custom rules we can make optimum use of custom validator.
Defining custom validators while using Reactive Forms in Angular comes very easy as they are more of regular functions. One can conveniently generate function for custom validators within the component file in case the validator is not supposed to be used elsewhere.
A Graph-Based Method For Cross-Entity Threat DetectionJen Aman
This document proposes a graph-based method for cross-entity threat detection. It models entity relationships as a multigraph and detects anomalies by identifying unexpected new connections between entities over time. It introduces two algorithms: a naive detector that identifies edges only in the detection graph, and a 2nd-order detector that identifies edges between entity clusters. An experiment on a real dataset found around 700 1st-order and 200 2nd-order anomalies in under 5 minutes, demonstrating the method's ability to efficiently detect threats across unrelated accounts.
This document summarizes the new features and goals of RxJS version 5, which aims to improve the modularity, performance, debugging, and extensibility of the RxJS library. Key changes include making RxJS fully modular, improving performance by reducing allocations and call stack sizes, enhancing debugging with simpler operator implementations, and allowing better extensibility through subclassing Observables and maintaining Subject bi-directionality. Simpler unit tests using marble diagrams are also highlighted.
Angular - Chapter 4 - Data and Event HandlingWebStackAcademy
The document provides information about Angular data binding and event handling. It discusses how interpolation can be used to connect data from a component class to its template. It also explains how property binding and event binding allow two-way communication between the component class and template. Finally, it introduces ngModel for setting up two-way data binding between an input element and a property.
The document discusses various methods for sharing data between Angular components, including:
1) Parent to child components using @Input to pass data via templates.
2) Child to parent using @ViewChild and AfterViewInit lifecycle hook to access child component properties.
3) Child to parent using @Output and event emitters to emit data on user events like button clicks.
4) Between unrelated components using a shared service with RxJs Subjects to share stream of data between all components accessing the service.
This document summarizes a keynote presentation about Angular 2.0.0. It discusses the growth of the Angular community from 1.5 million users in October 2015 to 1.2 million users in September 2016 for Angular 1 and 623k users for Angular 2 in September 2016. It also outlines Angular's major release cycle and provides an overview of the core features and extensions of the Angular framework.
Http Service will help us fetch external data, post to it, etc. We need to import the http module to make use of the http service. Let us consider an example to understand how to make use of the http service.
AngularJS is a structural framework for dynamic web apps. It lets you use HTML as your template language and lets you extend HTML's syntax to express your application's components clearly and succinctly. AngularJS's data binding and dependency injection eliminate much of the code you would otherwise have to write. And it all happens within the browser, making it an ideal partner with any server technology.
Presentation about new Angular 9.
It gives introduction about angular framework.
Provides information about why we use angular,
additional features and fixes from old versions. It will clearly explain how to create a new angular project and how to use angular commands and their usages.
It will also explain about the key components like angular architecture, routing, dependency injection etc.,
Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript. It is an update to AngularJS with a focus on mobile and typesafety. Major versions include Angular 1.x, 2.x, 4.x and 5.x. Angular uses components, services and modules to build applications with templates and styles. It is compiled to JavaScript using transpilation and supports AOT and JIT compilation. Common tools used with Angular include the Angular CLI, Webpack and Zone.js.
React is a JavaScript library created by Facebook and Instagram to build user interfaces. It allows developers to create fast user interfaces easily through components. React uses a virtual DOM to update the real DOM efficiently. Some major companies that use React include Facebook, Yahoo!, Airbnb, and Instagram. React is not a complete framework but rather just handles the view layer. It uses a one-way data binding model and components to build user interfaces.
A directive is a custom HTML element that is used to extend the power of HTML. Angular 2 has the following directives that get called as part of the BrowserModule module.
ngif
ngFor
If you view the app.module.ts file, you will see the following code and the BrowserModule module defined. By defining this module, you will have access to the 2 directives.
The document discusses Angular routing and provides an example implementation. It first generates components for home, about, userList and user pages. It then sets up routes in app.module.ts to link URLs like /home and /about to their corresponding components. Navigation links using routerLink are added. To handle empty/invalid URLs, a default route is set to redirect to /home. Sub-routes are created under /user linking /user/list to UserListComponent, which displays a list of users. Clicking a user name creates a child route passing the name as a parameter to the UserComponent to display that user's details page.
This document introduces TypeScript, a typed superset of JavaScript that compiles to plain JavaScript. It discusses TypeScript's installation, why it is used, main features like type annotations and classes, comparisons to alternatives like CoffeeScript and Dart, companies that use TypeScript, and concludes that TypeScript allows for safer, more modular code while following the ECMAScript specification. Key benefits are highlighted as high value with low cost over JavaScript, while potential cons are the need to still understand some JavaScript quirks and current compiler speed.
NgRx is a framework for building reactive applications in Angular with the Management of States. NgRx is inspired by the Redux pattern - unifying the events in your application and deriving state using RxJS.
At a high level, NgRx stores a single state and uses actions to express state changes. It makes Angular development easier by simplifying the application’s state in objects and enforcing unidirectional data flow.
It is established with 5 main components - Store, Actions, Reducers, Selectors, and Effects.
Explanation of the fundamentals of Redux with additional tips and good practices. Presented in the Munich React Native Meetup, so the sample code is using React Native. Additional code: https://github.com/nacmartin/ReduxIntro
Introduction to angular with a simple but complete projectJadson Santos
Angular is a framework for building client applications in HTML, CSS and TypeScript. It provides best practices like modularity, separation of concerns and testability for client-side development. The document discusses creating an Angular project, generating components, binding data, using directives, communicating with backend services, routing between components and building for production. Key steps include generating components, services and modules, binding data, calling REST APIs, defining routes and building the app.
Validating user input for accuracy and completeness helps in improving overall data quality. Angular and its form package turns up with a Validators class that has some beneficial validators like minLength, maxLength, required and pattern. However, occasionally if we wish to validate different fields under more complex/custom rules we can make optimum use of custom validator.
Defining custom validators while using Reactive Forms in Angular comes very easy as they are more of regular functions. One can conveniently generate function for custom validators within the component file in case the validator is not supposed to be used elsewhere.
A Graph-Based Method For Cross-Entity Threat DetectionJen Aman
This document proposes a graph-based method for cross-entity threat detection. It models entity relationships as a multigraph and detects anomalies by identifying unexpected new connections between entities over time. It introduces two algorithms: a naive detector that identifies edges only in the detection graph, and a 2nd-order detector that identifies edges between entity clusters. An experiment on a real dataset found around 700 1st-order and 200 2nd-order anomalies in under 5 minutes, demonstrating the method's ability to efficiently detect threats across unrelated accounts.
This document discusses reactive systems and programming. It begins with an introduction to reactive systems and programming, explaining the difference between the two. It then discusses why reactive systems are useful, covering topics like efficient resource utilization. The document goes on to explain key concepts like observables, backpressure, and reactive libraries. It provides examples of reactive programming with Spring Reactor and reactive data access with Couchbase. Overall, the document provides a high-level overview of reactive systems and programming concepts.
In this session we will learn how to get started with AngularJS 2 and TypeScript. We will cover AngularJS 2 concepts both for developers who have used Angular 1 as well as those new to Angular. Along the way we will show you how TypeScript helps you develop AngularJS 2 applications.
Realtime Statistics based on Apache Storm and RocketMQXin Wang
This document discusses using Apache Storm and RocketMQ for real-time statistics. It begins with an overview of the streaming ecosystem and components. It then describes challenges with stateful statistics and introduces Alien, an open-source middleware for handling stateful event counting. The document concludes with best practices for Storm performance and data hot points.
Predictable reactive state management - ngrxIlia Idakiev
This document provides an overview and introduction to Predictable Reactive State Management using NGRX. It begins with an introduction to the speaker and then outlines the schedule which includes topics like functional programming, RxJS, Angular change detection, Redux, and NGRX. It then discusses how functional programming concepts like pure functions, immutable data, and declarative programming relate to Angular and libraries like RxJS and NGRX. Specific NGRX concepts like actions, reducers, and selectors are introduced. Examples are provided for building an NGRX application with a single reducer handling the state updates. Additional resources are listed at the end.
Gearpump is an Apache Incubator project that provides a real-time streaming engine based on Akka. It allows users to easily program streaming applications as a directed acyclic graph (DAG) and handles issues like out-of-order data processing, flow control, and exactly-once processing to prevent lost or duplicated states. Gearpump also enables dynamic updates to the DAG at runtime and provides visualization of the data flow.
Unified Stream Processing at Scale with Apache Samza by Jake Maes at Big Data...Big Data Spain
The shift to stream processing at LinkedIn has accelerated over the past few years. We now have over 200 Samza applications in production processing more than 260B events per day.
https://www.bigdataspain.org/2017/talk/apache-samza-jake-maes
Big Data Spain 2017
November 16th - 17th Kinépolis Madrid
Monitoring NGINX (plus): key metrics and how-toDatadog
NGINX just works and that's why we use it. That does not mean that it should be left unmonitored. As a web server, it plays a central role in a modern infrastructure. As a gatekeeper, it sees every interaction with the application. If you monitor it properly it can explain a lot about what is happening in the rest of your infrastructure.
In this talk you will learn more about NGINX (plus) metrics, what they mean and how to use them. You will also learn different methods (status, statsd, logs) to monitor NGINX with their pros and cons, illustrated with real data coming from real servers.
[CB20] -U25 Ethereum 2.0 Security by Naoya OkanamiCODE BLUE
Ethereum 2.0 is a major upgrade to improve the performance of Ethereum. It will increase transaction processing capacity and alleviate the problem of fees, which have been rising to the point where millions of dollars are spent every day.
In this talk, I explain how Ethereum 2.0 can be secured as the next generation of decentralized application platforms and present the research we are working on as part of that effort. First, I talk about technologies to improve security, including client diversity, fuzzing using multiple clients, and the fee market protocol EIP-1559. Second, I introduce Shargri-La, a protocol development support software we are developing (*), a simulator that helps researchers and developers quickly test protocol hypotheses to improve the performance and security of Ethereum 2.0. It simulates state transitions at the transaction level of granularity in "sharding," a technique that divides the blockchain into multiple pieces. Finally, I present the results of multi-agent simulations under EIP-1559 by modeling users' selfish behaviors and show possible future problems and mitigation solutions.
This document discusses NetSpectre, a remote cache-side channel attack that leaks information via network requests. It works by finding "gadgets" in code that, when used with attacker-controlled inputs, cause side effects in microarchitectural elements that can be observed through measurements. This allows secret information like ASLR values or passwords to be leaked byte-by-byte through repeated measurements of network latency variations induced by cache state changes. The document also notes that finding useful Spectre gadgets remains an open problem and outlines some prior work on related attacks.
ggplot2.SparkR: Rebooting ggplot2 for Scalable Big Data Visualization by Jong...Spark Summit
ggplot2.SparkR is an R package that extends ggplot2 to allow for scalable big data visualization using Spark DataFrames. It enables ggplot2's grammar of graphics and easy API to be used with Spark, producing high-quality graphs from large distributed datasets. The package processes Spark DataFrames through multiple stages to generate visualizations, maintaining ggplot2's usability while enabling scalability. Experimental results show its performance scales linearly with cluster size and data volume. The project aims to improve API coverage and optimize performance further.
This document provides an overview of Apache Samza, an open source stream processing framework. It discusses why stream processing is useful, Samza's design of processing streams of data across jobs and tasks, how its design is implemented using Apache Kafka for messaging and YARN for resource management, and how to use Samza by developing stream and stateful tasks.
This document discusses reactive streams and common reactive programming concepts. It covers existing concurrency models like synchronized, futures, and actors. The reactive streams API defines publishers that push data and subscribers that pull data. Backpressure allows downstream consumers to control the upstream data flow. Streams can be asynchronous and handle backpressure. Common stream operations like filter, map, flatmap, delay, and buffer are explained. Hot and cold streams are distinguished. Examples are shown using RxJava, Reactor, and Akka streams. Integrating reactive streams with Java, Groovy, Spring Data, and other technologies is also covered.
Angular is a platform for building mobile and desktop web applications. It is no longer just a framework. Angular 2 offers improvements such as faster performance, modularity, support for modern browsers, and reactive programming using RxJS. Key parts of Angular include templates, directives, data binding, components, services, modules, and dependency injection. Features like Ahead-of-Time compilation and services improve app performance and reusability. TypeScript adds benefits like static typing and class-based programming.
Hadoop Summit SJ 2016: Next Gen Big Data Analytics with Apache ApexApache Apex
This is an overview of architecture with use cases for Apache Apex, a big data analytics platform. It comes with a powerful stream processing engine, rich set of functional building blocks and an easy to use API for the developer to build real-time and batch applications. Apex runs natively on YARN and HDFS and is used in production in various industries. You will learn more about two use cases: A leading Ad Tech company serves billions of advertising impressions and collects terabytes of data from several data centers across the world every day. Apex was used to implement rapid actionable insights, for real-time reporting and allocation, utilizing Kafka and files as source, dimensional computation and low latency visualization. A customer in the IoT space uses Apex for Time Series service, including efficient storage of time series data, data indexing for quick retrieval and queries at high scale and precision. The platform leverages the high availability, horizontal scalability and operability of Apex.
Big data Argentina meetup 2020-09: Intro to presto on dockerFederico Palladoro
We will talk about how we are migrating our Presto clusters from AWS EMR to Docker using production-grade orchestrators
considering cluster management, configuration and monitoring. We will discuss between Hashicorp Nomad and Kubernetes as a base solution
A brief introduction to React Native and also best way to render analytics charts & graphs in React Native. Making cross platform ios and android apps.
This document discusses Polymer elements and catalogs. It provides an overview of what Polymer elements are, how to use existing elements and create custom elements. It also describes different types of elements available in the Polymer catalog like Paper elements, Iron elements, Gold elements, Data elements, Platinum elements, and Molecules. The document explains how to find, install and use existing Polymer elements in a project.
In this document I explain about advanced topics regarding Custom Elements in PolymerJS like Data Binding, Behaviors, Event Listeners, Gestures, Execution Flow for App Route, Animations & Styling, Responsive UI, Multiple Themes, Making Ajax Calls
This document consists of important information & points regarding learning all about creating Custom Elements in PolymerJS to develop engaging Web Experiences. This will contain important topics like Custom Elements, Registering them, Event Lifecycle, Local DOM, Styling them
This document gives you an overview of PolymerJS and how it can be used to build engaging user experiences being very native to all the browsers too. PolymerJS leverages the core concepts of WebComponents which is the future of Web Development as most of the important specs are coming to the browsers in latest releases.
This presentation contains important information introducing Angular 2& above to the Web Developers who have either used AngularJS 1 or starting afresh with JS App Development.
This document provides an introduction to website development and ASP.NET. It discusses what websites are, the differences between static and dynamic websites, and an overview of ASP.NET. It also summarizes the ASP.NET application lifecycle and provides an example of a first ASP.NET application that displays the current date and time.
The document summarizes a workshop on desktop software development. It discusses developing a chat application using .NET remoting, with a server backend, middleware for connectivity, and a chat client user interface. It describes .NET remoting's ability to allow remote object interaction across application domains using channels to transport messages. The HTTP and TCP channels are discussed as options for transporting serialized messages between remote objects. The document also lists server code, middleware, client code, and interfaces as topics to be discussed.
This document summarizes the lifecycle events of Windows forms, delegates, types of delegates, event handlers, the Windows forms designer, basic controls, and their properties and events. It explains that the lifecycle events include move, load, visible changed, activated, shown, paint, deactivate, closing, and closed. It describes delegates as references that encapsulate methods and act as function pointers. The types of delegates are single and multi-cast. Event handlers allow handling form events. The designer contains the .resx and .Designer.cs files for laying out the UI. Basic controls include buttons, labels, textboxes, radio buttons, checkboxes, and more.
The document discusses collections in .NET and Windows Forms. Collections in .NET include classes that implement interfaces like IEnumerable, IEnumerator, and ICollection. Common collection classes include ArrayList, Stack, Queue, and Hashtable. Windows Forms provides a graphical API for building Windows applications using .NET. It uses an event-driven model where the application waits for user input like button clicks. Code examples show how to create an empty Windows form and a basic "My First Window" form.
This document discusses advanced C# concepts including boxing and unboxing, which convert value types to reference types and vice versa, using the Typeof and Sizeof operators to get the type and size of a variable, and operator overloading to define custom operator meanings for user-defined types.
This document discusses namespaces, classes, and inheritance in C#. It provides examples of nested namespaces, classes with methods and properties, and class inheritance. Class inheritance allows a child class to inherit properties and methods from a parent class. The examples demonstrate a parent and child class where the child inherits and overrides methods from the parent.
The document discusses collections in .NET and Windows Forms. Collections in .NET include classes that implement interfaces like IEnumerable, IEnumerator, and ICollection. Common collection classes include ArrayList, Stack, Queue, and Hashtable. Windows Forms provides a graphical API for building Windows applications using .NET. It uses an event-driven model where the application waits for user input like button clicks. Code examples demonstrate creating an empty Windows form and a basic "My First Window" form.
C# is a simple, modern, object-oriented, powerful, and flexible language. It uses common namespaces like System, System.Collections, System.IO, and System.Net. Types in .NET can be value types or reference types. Common types include classes, structures, enumerations, interfaces, and delegates. Classes and structures define types while enumerations allow alternate names for values. Type definitions specify attributes, accessibility, name, base type, interfaces, and members.
The document discusses the Indian IT and education industries and the reasons for starting an NCTS program. It then outlines the schedule for the NCTS program which will cover topics like .NET, C#, SQL, ASP.NET, and mobile development over the course of several weeks in June. It also provides brief introductions to the .NET Framework and the role of the Common Language Runtime.
TrsLabs - Fintech Product & Business ConsultingTrs Labs
Hybrid Growth Mandate Model with TrsLabs
Strategic Investments, Inorganic Growth, Business Model Pivoting are critical activities that business don't do/change everyday. In cases like this, it may benefit your business to choose a temporary external consultant.
An unbiased plan driven by clearcut deliverables, market dynamics and without the influence of your internal office equations empower business leaders to make right choices.
Getting things done within a budget within a timeframe is key to Growing Business - No matter whether you are a start-up or a big company
Talk to us & Unlock the competitive advantage
Andrew Marnell: Transforming Business Strategy Through Data-Driven InsightsAndrew Marnell
With expertise in data architecture, performance tracking, and revenue forecasting, Andrew Marnell plays a vital role in aligning business strategies with data insights. Andrew Marnell’s ability to lead cross-functional teams ensures businesses achieve sustainable growth and operational excellence.
Role of Data Annotation Services in AI-Powered ManufacturingAndrew Leo
From predictive maintenance to robotic automation, AI is driving the future of manufacturing. But without high-quality annotated data, even the smartest models fall short.
Discover how data annotation services are powering accuracy, safety, and efficiency in AI-driven manufacturing systems.
Precision in data labeling = Precision on the production floor.
AI Changes Everything – Talk at Cardiff Metropolitan University, 29th April 2...Alan Dix
Talk at the final event of Data Fusion Dynamics: A Collaborative UK-Saudi Initiative in Cybersecurity and Artificial Intelligence funded by the British Council UK-Saudi Challenge Fund 2024, Cardiff Metropolitan University, 29th April 2025
https://alandix.com/academic/talks/CMet2025-AI-Changes-Everything/
Is AI just another technology, or does it fundamentally change the way we live and think?
Every technology has a direct impact with micro-ethical consequences, some good, some bad. However more profound are the ways in which some technologies reshape the very fabric of society with macro-ethical impacts. The invention of the stirrup revolutionised mounted combat, but as a side effect gave rise to the feudal system, which still shapes politics today. The internal combustion engine offers personal freedom and creates pollution, but has also transformed the nature of urban planning and international trade. When we look at AI the micro-ethical issues, such as bias, are most obvious, but the macro-ethical challenges may be greater.
At a micro-ethical level AI has the potential to deepen social, ethnic and gender bias, issues I have warned about since the early 1990s! It is also being used increasingly on the battlefield. However, it also offers amazing opportunities in health and educations, as the recent Nobel prizes for the developers of AlphaFold illustrate. More radically, the need to encode ethics acts as a mirror to surface essential ethical problems and conflicts.
At the macro-ethical level, by the early 2000s digital technology had already begun to undermine sovereignty (e.g. gambling), market economics (through network effects and emergent monopolies), and the very meaning of money. Modern AI is the child of big data, big computation and ultimately big business, intensifying the inherent tendency of digital technology to concentrate power. AI is already unravelling the fundamentals of the social, political and economic world around us, but this is a world that needs radical reimagining to overcome the global environmental and human challenges that confront us. Our challenge is whether to let the threads fall as they may, or to use them to weave a better future.
Quantum Computing Quick Research Guide by Arthur MorganArthur Morgan
This is a Quick Research Guide (QRG).
QRGs include the following:
- A brief, high-level overview of the QRG topic.
- A milestone timeline for the QRG topic.
- Links to various free online resource materials to provide a deeper dive into the QRG topic.
- Conclusion and a recommendation for at least two books available in the SJPL system on the QRG topic.
QRGs planned for the series:
- Artificial Intelligence QRG
- Quantum Computing QRG
- Big Data Analytics QRG
- Spacecraft Guidance, Navigation & Control QRG (coming 2026)
- UK Home Computing & The Birth of ARM QRG (coming 2027)
Any questions or comments?
- Please contact Arthur Morgan at [email protected].
100% human made.
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Spark is a powerhouse for large datasets, but when it comes to smaller data workloads, its overhead can sometimes slow things down. What if you could achieve high performance and efficiency without the need for Spark?
At S&P Global Commodity Insights, having a complete view of global energy and commodities markets enables customers to make data-driven decisions with confidence and create long-term, sustainable value. 🌍
Explore delta-rs + CDC and how these open-source innovations power lightweight, high-performance data applications beyond Spark! 🚀
Web & Graphics Designing Training at Erginous Technologies in Rajpura offers practical, hands-on learning for students, graduates, and professionals aiming for a creative career. The 6-week and 6-month industrial training programs blend creativity with technical skills to prepare you for real-world opportunities in design.
The course covers Graphic Designing tools like Photoshop, Illustrator, and CorelDRAW, along with logo, banner, and branding design. In Web Designing, you’ll learn HTML5, CSS3, JavaScript basics, responsive design, Bootstrap, Figma, and Adobe XD.
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Designing Low-Latency Systems with Rust and ScyllaDB: An Architectural Deep DiveScyllaDB
Want to learn practical tips for designing systems that can scale efficiently without compromising speed?
Join us for a workshop where we’ll address these challenges head-on and explore how to architect low-latency systems using Rust. During this free interactive workshop oriented for developers, engineers, and architects, we’ll cover how Rust’s unique language features and the Tokio async runtime enable high-performance application development.
As you explore key principles of designing low-latency systems with Rust, you will learn how to:
- Create and compile a real-world app with Rust
- Connect the application to ScyllaDB (NoSQL data store)
- Negotiate tradeoffs related to data modeling and querying
- Manage and monitor the database for consistently low latencies
The Evolution of Meme Coins A New Era for Digital Currency ppt.pdfAbi john
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Vaibhav Gupta BAML: AI work flows without Hallucinationsjohn409870
Shipping Agents
Vaibhav Gupta
Cofounder @ Boundary
in/vaigup
boundaryml/baml
Imagine if every API call you made
failed only 5% of the time
boundaryml/baml
Imagine if every LLM call you made
failed only 5% of the time
boundaryml/baml
Imagine if every LLM call you made
failed only 5% of the time
boundaryml/baml
Fault tolerant systems are hard
but now everything must be
fault tolerant
boundaryml/baml
We need to change how we
think about these systems
Aaron Villalpando
Cofounder @ Boundary
Boundary
Combinator
boundaryml/baml
We used to write websites like this:
boundaryml/baml
But now we do this:
boundaryml/baml
Problems web dev had:
boundaryml/baml
Problems web dev had:
Strings. Strings everywhere.
boundaryml/baml
Problems web dev had:
Strings. Strings everywhere.
State management was impossible.
boundaryml/baml
Problems web dev had:
Strings. Strings everywhere.
State management was impossible.
Dynamic components? forget about it.
boundaryml/baml
Problems web dev had:
Strings. Strings everywhere.
State management was impossible.
Dynamic components? forget about it.
Reuse components? Good luck.
boundaryml/baml
Problems web dev had:
Strings. Strings everywhere.
State management was impossible.
Dynamic components? forget about it.
Reuse components? Good luck.
Iteration loops took minutes.
boundaryml/baml
Problems web dev had:
Strings. Strings everywhere.
State management was impossible.
Dynamic components? forget about it.
Reuse components? Good luck.
Iteration loops took minutes.
Low engineering rigor
boundaryml/baml
React added engineering rigor
boundaryml/baml
The syntax we use changes how we
think about problems
boundaryml/baml
We used to write agents like this:
boundaryml/baml
Problems agents have:
boundaryml/baml
Problems agents have:
Strings. Strings everywhere.
Context management is impossible.
Changing one thing breaks another.
New models come out all the time.
Iteration loops take minutes.
boundaryml/baml
Problems agents have:
Strings. Strings everywhere.
Context management is impossible.
Changing one thing breaks another.
New models come out all the time.
Iteration loops take minutes.
Low engineering rigor
boundaryml/baml
Agents need
the expressiveness of English,
but the structure of code
F*** You, Show Me The Prompt.
boundaryml/baml
<show don’t tell>
Less prompting +
More engineering
=
Reliability +
Maintainability
BAML
Sam
Greg Antonio
Chris
turned down
openai to join
ex-founder, one
of the earliest
BAML users
MIT PhD
20+ years in
compilers
made his own
database, 400k+
youtube views
Vaibhav Gupta
in/vaigup
[email protected]
boundaryml/baml
Thank you!
Massive Power Outage Hits Spain, Portugal, and France: Causes, Impact, and On...Aqusag Technologies
In late April 2025, a significant portion of Europe, particularly Spain, Portugal, and parts of southern France, experienced widespread, rolling power outages that continue to affect millions of residents, businesses, and infrastructure systems.
2. ngMeetup Angular2
Little about Myself
2
Rahat Khanna
@mappmechanic
Bangalore
Front End Dev Blogger Author
blog.pusher.com
airpair.com
packtpub.com/blog
pluralsight.org
3. ngMeetup Angular2
Agenda
3
• A new asynchronous programming concept: the stream
• A new primitive type: Observables
• Intro to RxJs in Angular
• Commonly used operators: map, filter, reduce, scan
• Common uses of RxJs in Angular: Forms and Http
8. ngMeetup Angular2
Streams
8
Stream is simply - sequence of events over a given time.
Streams can be used to process any of type of event such as
• mouse clicks,
• key presses,
• bits of network data, etc.
You can think of streams as variables that with the ability to
react to changes emitted from the data they point to.
10. ngMeetup Angular2
New Primitive Type - Observables
10
An observer subscribes to an Observable. An Observable
emits items or sends notifications to its observers by calling
the observers’ methods.
In other documents and other contexts, what we are
calling an “observer” is sometimes called a
“subscriber,” “watcher,” or “reactor.” This model in
general is often referred to as the “reactor pattern”.
12. ngMeetup Angular2
Intro to RxJS
12
Reactive Extensions for JavaScript
RxJS is a library that allows us to easily create and
manipulate streams of events and data. This makes
developing complex but readable asynchronous code
much easier.
RxJS in Angular
To get started with RxJS in Angular, all we need to do is
import the operators we want to use. TRxJS is itself an
Angular dependency so it's ready to use out of the box.