Starting today, Bootstrap 3 will move to end of life, and will no longer receive critical security updates.

Bootstrap 4 moved to Long Term Support release on February 14, 2019 and will no longer receive new features. It will continue to receive bug fixes, security updates, and documentation updates.

Bootstrap 5 is under active development. You can follow our progress on GitHub. 

npm install -g rxjs-tslint
rxjs-5-to-6-migrate -p src/tsconfig.app.json

npm install npm-check-updates -g
ncu -u
npm install

namespace CS11Tests;

public static class NewLinesStringInterpolations
{
    public static void Test()
    {
        var month = 8;
        var season = $"The season is {month switch
        {
            >= 1 and <= 3 => "spring",
            >= 4 and <= 6 => "summer",
            >= 7 and <= 9 => "autumn",
            10 or 11 or 12 => "winter",
            _ => "Wrong month number",
        }}.";
        Console.WriteLine(season);

        int[] numbers = { 1, 2, 3, 4, 5, 6 };
        var message = $"The reversed even values of {nameof(numbers)} are {string.Join(", ",
            numbers.Where(n => n % 2 == 0).Reverse())}.";
        Console.WriteLine(message);
    }
}

C# Source Generators

A list of C# Source Generators (not necessarily awesome), because I haven't found a good list yet.

C# Source Generators is a Roslyn compiler feature introduced in C#9/.NET 5. It lets C# developers inspect user code and generate new C# source files that can be added to a compilation. 

var numbers1_CS11 = new[] { 1, 2, 3 };

var numbers1_CS_11 = new int[] { 1, 2, 3 };

int[] numbers1_CS12 = [ 1, 2, 3 ];

error CS9176: There is no target type for the collection expression.

Span<string> span1_CS11 = new string[] { "AC", "AL" };

Span<string> span1_CS12 = [ "AC", "AL" ];

ReadOnlySpan<string> readOnlySpan_CS12 = [ "Africa",  "Asia", "Europa"];

int[][] array2D_CS11 =
  {
    new int[] { 2002, 2006, 2010},
    new int[] { 2014, 2018},
    new int[] { 2022, 2026, 2030}
  };

int[][] array2D_CS12 =
  [
     [2002, 2006, 2010],
     [2014, 2018],
     [2022, 2026, 2030]
  ];

List<string> list_CS11 = new List<string> { "Item 1", "Item 2" };

List<string> list_CS12 = [ "Item 1", "Item 2" ];

// Before C#12
List<User> users = new List<User>();
// or
var users = new List<User>();
// or
List<User> user = new();

// C#12
List<User> users = [];

int[] numbers1_CS12 = [ 1, 2, 3 ];
int[] numbers2_CS12 = [ 4, 5, 6 ];

int[] allItems = [ ..numbers1_CS12, ..numbers2_CS12 ];

int[] allItems_CS11 = numbers1_CS12.Concat(numbers2_CS12).ToArray();

int[] join = [..a, ..b, ..c, 6, 5];

int[] a =[1, 2, 3];
Span<int> b = [2, 4, 5, 4, 4];
List<int> c = [4, 6, 6, 5];

List<int> join = [..a, ..b, ..c, 6, 5];

List<(string, int)> otherScores = [("Dave", 90), ("Bob", 80)];

(string name, int score)[] scores = [("Alice", 90), ..otherScores, ("Charlie", 70)];

Best Plugins For JetBrains IDEs
Discover language-agnostic and -dependent plugins for IntelliJ IDEA that may be a great help in your daily fight with tasks that will make your work easier.
 

Static embeddable image charts for email, SMS, reports, and more 

<img src="https://quickchart.io/chart?width=500&height=300&c={type:'bar',data:{labels:['January','February','March','April', 'May'], datasets:[{label:'Dogs',data:[50,60,70,180,190]},{label:'Cats',data:[100,200,300,400,500]}]}}">