What is #pragma once used for?
c++
Solution
`#pragma` is just the prefix for a compiler-specific feature.
In this case, `#pragma once` means that this header file will only ever be included once in a specific destination file. It removes the need for include guards.
Problem
Can anyone help me understand #pragma? ``` ifndef TARGET_OS_LINUX #pragma once endif ``` What,when, where, why, an example? The above is in some code that I am refactoring....