C#

~2 mins read

Types

Value types

byte 8 bit

int 32 bit

long 64 bit

short 64 bit

uint, ulong, ushort, sbyte

float 32 bit

double 64 bit

decimal 128 bit

struct custom value type

char 16 bit unicode char

Reference types

Object, String, Array, Class

Delegate : Type-safe function pointer (e.g., delegate void MyDelegate(string message);)

Interface : Defines a contract that implementing classes must follow (e.g., interface IShape { void Draw(); })

The size of primitive types is fixed by the language specification and does not change based on the machine architecture.

Pointers and Addresses: Pointer types (IntPtr, UIntPtr) can vary in size. For example, IntPtr is 32-bit on a 32-bit system and 64-bit on a 64-bit system.

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using System;

class LanguageTour{
    
    static void Main(){

    }

    public static bool And(bool left, bool right) =>
    (left, right) switch
    {
        (true, true) => true,
        (_, _) => false,
    };

    public static bool Or(bool left, bool right) =>
    (left, right) switch
    {
        (false, false) => false,
        (_, _) => true,
    };
}

C# docs - get started, tutorials, reference. - Microsoft Learn

Tutorial: Build algorithms with pattern matching - C# - Microsoft Learn

Highest scored ‘c#’ questions - Stack Overflow

c# - Proper use of the IDisposable interface - Stack Overflow