what does NULL mean

[kacper130320]

In the tutorials chili soletimes declares a variable as NULL and I'm not sure what it means. Can you tell me so I will understand the tutorials better.

[LuX]

NULL == 0, 0 == NULL

You can replace each NULL with 0 if you like. If I remember correctly that's just stuck with some programmers from "C" where you had to use NULL in some cases or your code would not run.

But to be sure, keep the NULL's where they are.

[ghilllie]

other leteral meaning of NULL

NULL = just forget it.
NULL = whatever you are just keep quiet at sides.
NULL = Just don't do anything.
NULL = Just nothing.
NULL = Just skip me, I've got nothing to do with anything.
NULL = Just leave me alone, I am assigned for nothingness.

whatever more that is meant for NO VALUE.

[chili]

Null means invalid, and it is used for pointers and sometimes for handles too. It is more descriptive than simply '0', but its value is the same.