When to use the double logical not (!!) in C?
47477
What is "!!" in C?
37369
How do I check if two logical expressions are equivalent?
56685
Java logical operator short-circuiting
61475
Logical Operators in C
123797
Not equal  != operator on NULL
106983
Python `if x is not None` or `if not x is None`?
46395
Is it 100% correct to replace !!someVar with Boolean(someVar)?
38356
Benefits of using the conditional ?: (ternary) operator
149035
Using "neither" without "nor"
63088
What does the '!!!' syntax mean in javascript?
8979
Why use apparently meaningless do-while and if-else statements in macros?
130415
Negating quantifiers with brackets
34304
Precedence of the shell logical operators &&, ||
85278
Should I use 'or' or 'nor' after a negative statement?
44146
Why do c++ programmers use != instead of <
3574
What is the !! (not not) operator in JavaScript?
146680
OR operator in C not working