Use of double negation (!!)
58423
What does !! (double exclamation point) mean?
42605
Is there a technical reason to use > (<) instead of != when incrementing by 1 in a 'for' loop?
138211
Defining a function using a preceding expression
65069
What is the double bracket notation used here?
100421
How to write this boolean expression using only NOR gates?
68434
Typesetting of negative versus minus?
108376
Best way to "negate" an instanceof
108292
Precedence between implication and bi-implication
32402
$(A \implies B) \implies (\neg B \implies \neg A)$?
32028
When is double-quoting necessary?
3567
Can we omit a duplicated preposition?
38399
What is the meaning of prepended double colon "::"?
16585
What constitutes a double negative?
79050
Python ( or general programming ). Why use  instead of != and are there risks?
96006
What does the ??!??! operator do in C?
43071
"(" or "\left(" parentheses?
16223
can "not" substitute a negative independent clause