How to test whether something is identically NaN?
75261
How to tell whether value is NaN without using isNaN, which has false positives?
99448
How to test randomness (case in point - Shuffling)
3265
How can I test if a variable is empty or contains only spaces?
146646
How to check whether a system is big endian or little endian?
3378
Simplest way to check if two integers have same sign?
130456
Why does Double.NaN==Double.NaN return false?
5412
What is the most effective way for float and double comparison?
1894
Why does typeof NaN return 'number'?
49446
How to check for an undefined or null variable in JavaScript?
31701
Check if two integers have the same sign
50076
How to test that no exception is thrown?
97235
Test if any columns are NULL
143939
How do you use: isalnum, isdigit, isupper to test each character of a string?
158067
Testing binary data
110451
How to check if a string is numeric?
50551
How do you validate that two math expressions are equal?
119268
Stopping the debugger when a NaN floating point number is produced