dadhi

/*

StackPool is faster by far >10 times than ScanPool.

Other features:
- Does not consume memory from the start - it grows only when you Return object to it.
- Forgiving for no Return scenarios, that means when you not returning - memory is not consumed. So it is similar to `new`
- May be put a limit on depth, NOT tested yet.

*/

dadhi

/*
Inspired by: https://medium.com/@gcanti/introduction-to-optics-lenses-and-prisms-3230e73bfcfe
*/

using System;
using static System.Console;

public static class Program 
{
    public static void Main() 

dadhi

using System;
using System.Collections.Generic;
using static System.Console;

namespace Union
{
    class Program
    {
        public static void Main()
        {

dadhi

using System;

public class Test
{
	public static void Main()
	{
		var x = ImZipper<int>.Empty.Pre(1).Pre(2);
		Console.WriteLine(x);
		Console.WriteLine(x.Focus);
	}

dadhi

Fun-fun-functional gists in CSharp

Experiment with this gist in Gistlyn.

Let's start with the big guns: Discriminated Union in C#.

dadhi

/*
https://dba.stackexchange.com/questions/96534/postgres-check-disk-space-taken-by-materialized-view?newreg=6b1d58604fce4a1fbe3033ddbb52d7ca

relkind:
r = ordinary table,
i = index,
S = sequence,
v = view,
m = materialized view,
c = composite type,

dadhi

// |       Method |      Mean |     Error |    StdDev |
// |------------- |----------:|----------:|----------:|
// |        Calli | 0.6718 ns | 0.0013 ns | 0.0012 ns |
// |     Delegate | 1.1366 ns | 0.0099 ns | 0.0088 ns |
// | FastDelegate | 1.6239 ns | 0.0103 ns | 0.0097 ns |

// MyClassLib.cs is compiled in another project (havent tested if compiling with Fody is working with BenchmarkDotnet in the same project)
// This file is referencing BenchDelegates.MyClassLib

using System;

dadhi

using System;

class Program
{
    // M wants to get an instance via Func
    static void M(Func<string> factory)
    {
        Console.WriteLine(factory());
    }

dadhi

module EnvDemo

open System
open System.IO

[<Struct>]
type Nothing =
    private
    | Nothing

dadhi

private DictionarySlim<TypeVal, string> _dict;

public DictionarySlim<TypeVal, string> DictSlim()
{
    var dict = new DictionarySlim<TypeVal, string>();

    foreach (var key in _keys.Take(Count))
        dict.GetOrAddValueRef(key) = "a";

    dict.GetOrAddValueRef(typeof(ImHashMapBenchmarks)) = "!";