Why every definition is an "iff"-type statement?
7871
Are "if" and "iff" interchangeable in definitions?
114937
Understanding F# Value Restriction Errors
1469
Is there a difference between "==" and "is"?
119353
'If' statement and the colon
71607
What's this =! operator?
29664
Why would somebody use an #if 1 C preprocessor directive?
50187
Which "if" construct is faster - statement or ternary operator?
26620
#ifdef #ifndef in Java
36544
"If" and "Whether" - Is interrogative IF always replacable by WHETHER?
84421
variable === undefined vs. typeof variable === "undefined"
32293
What's the difference between if(!$variable) and if(isset($variable))?
45164
Do 'if' statements in JavaScript require curly braces?
56892
#if DEBUG vs. Conditional("DEBUG")
130399
What is the difference between  and !=
73585
Why is the function continuous, if it is defined only on integers?
145469
In Common Lisp, why do multi-expression bodies of (if) statements require (progn)?
29701
Why does instanceof return false for some literals?