What's the point of !! in JavaScript?
3574
What is the !! (not not) operator in JavaScript?
82369
What does #{...} mean?
32226
What does "options = options || {}" mean in Javascript?
55375
What is the $ symbol used for in JavaScript
42395
When to use the double not (!!) operator in JavaScript
64194
Are =, , ==, !=, &&, and || used for arithmetic expressions or conditional expressions?
16088
How does the (function() {})() construct work and why do people use it?
32293
What's the difference between if(!$variable) and if(isset($variable))?
46150
Can't use exclamation mark (!) in bash?
8009
What does ':' (colon) do in JavaScript?
154567
difference between null != something and something != null
43122
What does ? ... : ... do?
48170
What is the purpose of a question mark after a type (for example: int? myVariable)?
99447
What is the difference between String? and String! (two ways of creating an optional variable)?
46395
Is it 100% correct to replace !!someVar with Boolean(someVar)?
70405
unnecessary exclamation marks(!)'s in HTML code
27742
What does "${-#*i}" != "$-" mean?