Why test -n returns true even when a variable is empty? What am I doing wrong?
126469
Test -n gives unexpected result
151869
What's the scope of a variable initialized in an if statement?
10593
How to test whether something is identically NaN?
139204
Why do numeric string comparisons give unexpected results?
53269
bash - True if the length of string is (non)zero?
64884
Why `null >= 0 && null <= 0` but not `null == 0`?
73021
Javascript : is given function empty?
49616
Why does NOT IN with a set containing NULL always return FALSE/NULL?
133340
Why does __r result in a null value?
23333
How can I expand a quoted variable to nothing if it's empty?
3265
How can I test if a variable is empty or contains only spaces?
107569
Conditional check for "i == (2^8)" fails when i is 512?
154049
why does if("string") evaluate "string" as true but if ("string"==true) does not?
119937
Why does (0 < 5 < 3) return true?
151825
Is there any difference between "foo is None" and "foo == None"?
63
How do I tell if the c function atoi failed or if it was a string of zeros?
27495
Why is True returned when checking if an empty string is in another?