Strings

string - immutable ReferenceEquals(s1, s2) s3 = string.Intern(s3)

$" text {variable} " - [string interpolation]

Properties

• s.Length;

Methods - return new string objects

• s.Trim();
• s.TrimStart();
• s.Replace("Hello", "Greetings");
• s.ToUpper();
• s.Contains("goodbye");

Interpolation

{[,][:]}

string firstFriend = "Maria";
string secondFriend = "Sage";
Console.WriteLine($"My friends are {firstFriend} and {secondFriend}");

//Aligment
Console.WriteLine($"|{"Left",-7}|{"Right",7}|");

//verbatim
Console.WriteLine(@"Text C:\Windows\System32")

## Concatenation
```C#
var str = new String('+', tableWidth);
var Hello = string.Concat("Hello", " Otus")

StringBuilder

var sb = new StringBuilder();

sb.Append("Hello");
sb.Append(" Otus");

var res = sb.ToString();

str[..(strWight - 2)]

char

2 bytes

char c = 'j';
char c = '\u006A'; //hex unicode