C# and the Evolution of a Programming Language
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This presentation discusses an overview of the .NET framework, a little history of C#, and the evolution of C# from its early days up to its current form including a preview of C# 7.0
![Local
Functions
class Program
{
static void Main(string[] args)
{
void testingLocalFunctions()
{
Console.WriteLine("Hello World!");
}
testingLocalFunctions();
}
}](https://image.slidesharecdn.com/davaophinugjune2016-c-sharptheevolutionofaprogramminglanguage-160606220705/85/C-and-the-Evolution-of-a-Programming-Language-22-320.jpg)
![Ref returns
and Ref Locals
string[] myArray = { "one", "two", "three" };
WriteLine($"The first element of the array is {myArray[0]}");
ref string n = ref FirstElement(myArray);
n = "other"; //myArray[0] now equals "other"
WriteLine($"The first element of the array has become
{myArray[0]}");](https://image.slidesharecdn.com/davaophinugjune2016-c-sharptheevolutionofaprogramminglanguage-160606220705/85/C-and-the-Evolution-of-a-Programming-Language-26-320.jpg)
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C# and the Evolution of a Programming Language
- 1. C# and the Evolution of a Programming Language Jon Limjap Microsoft MVP forVisual Studio and DevelopmentTechnologies Philippine .NET Users Group Lead
- 2. About Me Senior Software Architect, Beam And Go Microsoft MVP forVisual Studio and Development Technologies Philippine .NET Users Group Lead @lattex | [email protected]
- 4. Agenda .NET Defined What is C#? A brief history of C# A preview of C# 7
- 5. .NET Defined Microsoft’s open source software development ecosystem
- 6. Ecosystem
- 7. Common Language Runtime C#C# Visual Basic.NETVisual Basic.NET F#F# Common Language RuntimeCommon Language Runtime PC /TabletPC /Tablet Windows Phone (RIP) Windows Phone (RIP) Windows Server Windows Server Mac / Linux Mac / Linux Android / iOS Android / iOS Intermediate LanguageIntermediate Language
- 8. Tools
- 10. More on open sourced .NET Visit http://microsoft.github.io
- 11. What isC#? See sharp. Not see hash, or see pound
- 12. C# as a language Object Oriented StronglyTyped Declarative Imperative Functional Generic
- 13. History Continuous evolution of the C# language
- 14. History Designed by Anders Hejlsberg Originally named COOL (C-like Object-Oriented Language) First released in 2000 C# 7 is in Preview
- 15. Fanboy Moment
- 16. C# 2.0 November 2005 Generics Partial Classes Anonymous Methods Iterators NullableTypes Static Classes More…
- 17. C# 3.0 Novermber 2007 Implicitly typed variables aka var keyword Object and collection initializers Auto-properties AnonymousTypes Extension Methods Language Integrated Query (LINQ) Lambda Expressions More…
- 18. C# 4.0 April 2010 Dynamic Binding Named and Optional Parameters Generic Covariance and Contravariance More…
- 19. C# 5.0 August 2012 Asynchronous methods (async and await keywords) Caller info attributes
- 20. C# 6.0 July 2015 Using statements for static members Auto-property Initializers Getter-only automatic properties Dictionary Initializers Expression-bodied members Await inside a finally block Exception Filters Null-conditional operators String interpolation And a few more…
- 21. C# 7.0 It’s getting funkier every version!
- 22. Local Functions class Program { static void Main(string[] args) { void testingLocalFunctions() { Console.WriteLine("Hello World!"); } testingLocalFunctions(); } }
- 23. Digit separators int bin = 0b1001_1010_0001_0100; int hex = 0x1b_a0_44_fe; int dec = 33_554_432; int weird = 100_000; double real = 1_000.111_1e-1_000;
- 24. Binary Literals int nineteen = 0b10011;
- 25. Pattern Matching int? age = 5; if (age is int newVal) { Console.WriteLine($"Your age is {newVal}"); }
- 26. Ref returns and Ref Locals string[] myArray = { "one", "two", "three" }; WriteLine($"The first element of the array is {myArray[0]}"); ref string n = ref FirstElement(myArray); n = "other"; //myArray[0] now equals "other" WriteLine($"The first element of the array has become {myArray[0]}");
- 27. C# 7 features that will probably be released but are not available yet
- 28. Tuples public (int x, int y) Compute(){} // Call the method var (x,y) = Compute(); public (int sum, int count) Tally(IEnumerable<int> values) { sum = 0; count = 0; foreach (var value in values) { sum += value; count++; } return (sum,count); }
- 29. RecordTypes //Instead of: public class Cube { public int Width { get; set; } public int Height { get; set; } public int Depth { get; set; } } //We write this: public class Cube(int Width, int Height, int Depth)
- 30. Question &Answer Thank youandplease join the PHINUGFBGroup!facebook.com/groups/phinug