What does the assert() function do?

+2 votes

I saw it in the HTTP class usage example and got a bit confused:

assert( err == OK ) # Make sure all is OK

So, does it simply checks if a statement is true or there's some deeper meaning?

in Engine by (195 points)

1 Answer

+3 votes
Best answer

This means if error is not OK terminate the program.
assert means check if the condition is false then just terminate the program.

by (580 points)
selected by
I would specify that it only checks the condition in debug mode. Also the program does not terminate, but prints an script error: "Assertion failed."
If running from the editor, the debugger will catch this error.
by (488 points)
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