how understand my variable is vacuum in use of \ifx?
5374
How to check if a macro value is empty or will not create text with plain TeX conditionals?
27627
Confusion with the assignment operation inside a falsy `if` block
23333
How can I expand a quoted variable to nothing if it's empty?
64786
How can I linearize the IFF-THEN constraint with binary and continuous variable?
134318
Is it safe to check floating point values for equality to 0?
19713
Why do shell script comparisons often use x$VAR = xyes?
152748
Type of return value of thrust::remove_if
45874
What do 1.#INF00, -1.#IND00 and -1.#IND mean?
56714
String comparison in \ifthenelse
16287
Why do I see a double variable initialized to some value like 21.4 as 21.399999618530273?
101666
Is there an \iftex4ht command, and if not, how should it be defined?
143914
How do I create a static permanent ifconfig alias?
69182
bind -x leaves terminal in a state resembling ^V
66036
Why does this test with ifthenelse not compile?
72136
Why is my use of the ?: conditional operator incorrect?
56892
#if DEBUG vs. Conditional("DEBUG")
15694
Why is the binary output not equal when compiling again?