richlander

using System;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {
        // Demonstrates common uses of List<T>.
        // Doc: https://msdn.microsoft.com/library/6sh2ey19.aspx
        

richlander

// Task: Compute the sums of the values in two arrays of integers, A and B.

// Traditional approach: 

for (int i = 0; i < size; i++)
{
    C[i] = A[i] + B[i];
}

// With Vector<int> you can instead do this:

richlander

// old approach
let makeStrings chars lens =
    List.zip chars lens
    |> List.map (fun (char, len) -> new System.String(char, len))

// new approach
let makeStrings' chars lens =
    List.zip chars lens
    |> List.map System.String // use ctor as function

richlander

// old approach - need a `ref` value
let sumSquares n =
    let total = ref 0
    { 1 .. n } |> Seq.iter (fun i ->
        total := !total + i*i
    )
    !total

// new approach - `mutable` just works
let sumSquares' n =

richlander

type Test =
    static member EchoExpression([<ReflectedDefinition(true)>] x : Expr<_>) =
        let expression, value = (* decompose AST of x *)
        printfn "%s evaluates to %O" expression value

let x, y, z = 42, 89.0, 92.5
Test.EchoExpression(x)             // "x evaluates to 42" 
Test.EchExpression(Math.Max(y, z)) // "Math.Max(y, z) evaluates to 92.5"

richlander

public MainWindow()
{
    InitializeComponent();

    Loaded += async (o, e) => {
        await Task.Delay(1000);
        _strings = new string[] { "EnC now supports more features!", "Thanks to Roslyn!"};
        label.Content = (from str in _strings
                 where str.StartsWith("Enc")
                select str).FirstOrDefault();

richlander

using static System.Console;
using static System.Math;
using static System.DayOfWeek;

class Program
{
    static void Main()
    {
        WriteLine(Sqrt(3 * 3 + 4 * 4)); 
        WriteLine(Friday - Monday); 

richlander

Imports System.Console
Imports System.Math
Imports System.DateOfWeek

Module Program
    Sub Main()
        WriteLine(Sqrt(3 * 3 + 4 * 4))
        WriteLine(Friday - Monday)
 End Sub
End Module

richlander

Dim s = "Write your haiku with
No vbCrLf
In VB14"

richlander

var s = @"Write your haiku with
No \r\n escapes
In C# v1";