In this presentation I discuss the directions of the .NET Framework and the C# language moving forward from mid-2016.

1. The Future ofC#
Jon Limjap
Microsoft MVP forVisual Studio and DevelopmentTechnologies
Philippine .NET Users Group Lead

2. About Me
 Microsoft MVP forVisual Studio and
DevelopmentTechnologies
 CTO & Co-Founder, NomadTravlr Inc.
 Lead, Philippine .NET Users Group
 http://jonlimjap.net
 @lattex | jonlimjap@gmail.com

3. Philippine
.NETUsers
Group
(PHINUG)
facebook.com/groups/phinug

4. Where is Microsoft today?
Free or paid? Cheap or expensive? Open source or
proprietary? Good or evil?

5. Exciting times ahead for .NET

6. .NET FRAMEWORK .NET CORE XAMARIN
APP
MODELS
BASE
LIBRARIES
*
.NET today—app models and libraries

7. .NET FRAMEWORK .NET CORE XAMARIN
APP
MODELS
BASE
LIBRARIES
.NET today—reusing code

8. .NET today—challenges

9. .NET tomorrow
.NET FRAMEWORK .NET CORE XAMARIN
*

10. .NET tomorrow—reusing code
.NET FRAMEWORK .NET CORE XAMARIN

11. .NET standard libraries—advantages

12. .NET future innovation
.NET FRAMEWORK .NET CORE XAMARIN
*
TOOLS

13. Developed
in the open
http://dotnet.github.io

14.  http://stackoverflow.com/research/developer-survey-2016#technology-most-popular-technologies
Most popular technologies

15.  http://stackoverflow.com/research/developer-survey-2016#technology-most-loved-dreaded-and-wanted
Most loved technologies

16.  http://stackoverflow.com/research/developer-survey-2016#technology-most-loved-dreaded-and-wanted
Most dreaded technologies

17. Microsoft’s changing tune…
Run onWindows
.NET as system component
Run onVM (CLR)
Black box compilers
Edit inVisual Studio
Proprietary
Run everywhere
Deploy with app
Compile to native
Open compiler APIs
Use your favorite editor
Open source

18. C# 7
It’s getting funkier every version!

19. Digit
separators
int bin = 0b1001_1010_0001_0100;
int hex = 0x1b_a0_44_fe;
int dec = 33_554_432;
int weird = 10000_000;
double real = 1_000.111_1e-1_000;

20. Binary Literals int nineteen = 0b10011;

21. 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]}");

22. Local
Functions
class Program
{
static void Main(string[] args)
{
void testingLocalFunctions()
{
Console.WriteLine("Hello World!");
}
testingLocalFunctions();
}
}

23. C# 7 features
that are still…
wonky

24. 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);
}

25. Pattern
Matching
int? age = 5;
if (age is int newVal)
{
Console.WriteLine($"Your age is {newVal}");
}

26. 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)

27. Philippine
.NETUsers
Group
(PHINUG)
facebook.com/groups/phinug