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How to check for an undefined or null variable in JavaScript?
...e between cases:
Variables can be undefined or undeclared. You'll get an error if you access an undeclared variable in any context other than typeof.
if(typeof someUndeclaredVar == whatever) // works
if(someUndeclaredVar) // throws error
A variable that has been declared but not initialized is...
MySQL “incorrect string value” error when save unicode string in Django
I got strange error message when tried to save first_name, last_name to Django's auth_user model.
9 Answers
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maven-dependency-plugin (goals “copy-dependencies”, “unpack”) is not supported by m2e
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This still gives me a warning, but the error is gone.
– stevecross
Jun 26 '14 at 12:01
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Android Studio Checkout Github Error “CreateProcess=2” (Windows)
...Github project using brand new Android Studio and ended up with this nasty error :
9 Answers
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Fatal error: Maximum execution time of 300 seconds exceeded
I keep getting this PHP error:
18 Answers
18
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Avoid Android Lint complains about not-translated string
...ng an actually translatable string "not translatable" just to suppress the error message. We just choose to not translate some strings for the time being. But that doesn't mean they are not translatable.
– Zili FENG
Sep 2 '16 at 6:53
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Parsing a CSV file using NodeJS
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sadly this is bad - i got errors with huge files and long lines.... (memory errors - though other ways of reading it - works)
– Seti
Dec 5 '16 at 13:30
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Constant pointer vs Pointer to constant [duplicate]
...pointer
constant_pointer.c: In function ‘main’:
constant_pointer.c:13: error: increment of read-only variable ‘ptr’
Hence we see very clearly above that compiler complains that we cannot changes the address held by a constant pointer.
Pointer to Constants
#include<stdio.h>
int mai...
Xcode - ld: library not found for -lPods
I get these errors when I try to build an iOS application.
22 Answers
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What is the difference between syntax and semantics in programming languages?
...ement has no meaning (according to the C language rules) and thus it is an error even though the statement is syntactically correct.
If x is a pointer to some data type, the meaning of the statement is to "add sizeof(some data type) to the value at address x and store the result into the location at...