undefined_variable
- Snippet from Wikipedia: Undefined variable
An undefined variable in the source code of a computer program is a variable that is accessed in the code but has not been declared by that code.
In some programming languages, an implicit declaration is provided the first time such a variable is encountered at compile time. In other languages such a usage is considered to be sufficiently serious that a diagnostic being issued and the compilation fails.
Some language definitions initially used the implicit declaration behavior and as they matured provided an option to disable it (e.g. Perl's "
use warnings" or Visual Basic's "Option Explicit").
undefined_variable.txt · Last modified: 2024/05/01 04:06 by 127.0.0.1