'''How to use assertion in EMAN2?'''

EMAN2 has wrapped standard assert call as Assert. The header file is "emassert.h" instead of standard <cassert> or <assert.h>. The assert call will only be available when you enable "DEBUG" in the cmake compilation configurations. it will not be compiled into the release mode (default mode). For example:

{{{
#include "emassert.h"
...
Assert (x==1)
...
}}}
If you need kind of assertion behavior in production code. We suggest you consider [[eman2Exception|exception]] instead.