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'''Hooking functions''' allows you to replace a function value in an accessible environment by a function of your own, calling the original function before or after execution of new code. Hooking enables addons to modify and/or extend the behavior of the default UI and API. | '''Hooking functions''' allows you to replace a function value in an accessible environment by a function of your own, calling the original function before or after execution of new code. Hooking enables addons to modify and/or extend the behavior of the default UI and API. | ||
Depending on how the behavior of the original function is | Depending on how the behavior of the original function is modified, one or more of three hook types may be used: | ||
;Pre-hooks : New code executes before calling the original function, potentially choosing to modify the parameters passed to it, or not call it at all | ;Pre-hooks : New code executes before calling the original function, potentially choosing to modify the parameters passed to it, or not call it at all | ||
;Post-hooks : New code executes after the original function, potentially using the original function's return values. | ;Post-hooks : New code executes after the original function, potentially using the original function's return values. | ||