assert_enabled

int  assert_enabled()

Returns 1 if the environment variable HOUDINI_VEX_ASSERT is set or 0 if the variable isn’t set.

The assert() macro uses this function to only execute assertions when HOUDINI_VEX_ASSERT is set:

#define assert(EXPR)    \
    if (assert_enabled()) { \
        if (!(EXPR)) print_once(sprintf('VEX Assertion Failed %s:%d - (%s)\n', \
                __FILE__, __LINE__, #EXPR)); \
    }

You could use this function to write your own assert macro (for example, you might write a macro that used your studio’s logging infrastructure).

See using assertions in VEX for more information.