Why is the !! preferable in checking if an object is true?
140931
What is the difference between if(!!condition) and if(condition)
51160
What does !! mean in ruby?
156604
Why does "true" == true show false in JavaScript?
99447
What is the difference between String? and String! (two ways of creating an optional variable)?
23756
Why does one often see "null != variable" instead of "variable != null" in C#?
42605
Is there a technical reason to use > (<) instead of != when incrementing by 1 in a 'for' loop?
70705
What does `!!~` mean in javascript?
72909
What does the |= operator do in Java?
70566
How do I check if an object has a key in JavaScript?
76808
Meaning of ! in Java syntax
103299
What's "<?=" operator in C++?
38356
Benefits of using the conditional ?: (ternary) operator
68987
What's the point of the Boolean object?
50416
What does the >?= operator mean?
68676
Testing for nil in Objective-C -- if(x != nil) vs if(x)
665
Which equals operator (== vs ===) should be used in JavaScript comparisons?
96006
What does the ??!??! operator do in C?