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Pierre-Marie Baty · **Re: Well , just a small question -** 26-12-2004

this

Code:

int iTask = pBot->pTasks->iTask;

returns a pointer to the iTask element in the structure pointed to by pTasks. But this code will crash if pTasks is NULL, i.e. points to no tasks structure. This however

Code:

int iTask = BotGetSafeTask (pBot)->iTask;

will always return a valid pTasks pointer (even if it points to an empty task structure, what I'd call a "failsafe pointer"). This way iTask is always guaranteed to be accessible and the code won't crash.

	(#9)
Pierre-Marie Baty Roi de France Status: Offline Posts: 5,049 Join Date: Nov 2003 Location: 46°43'60N 0°43'0W 0.187A	Re: Well , just a small question - 26-12-2004 this Code: int iTask = pBot->pTasks->iTask; returns a pointer to the iTask element in the structure pointed to by pTasks. But this code will crash if pTasks is NULL, i.e. points to no tasks structure. This however Code: int iTask = BotGetSafeTask (pBot)->iTask; will always return a valid pTasks pointer (even if it points to an empty task structure, what I'd call a "failsafe pointer"). This way iTask is always guaranteed to be accessible and the code won't crash. RACC home - Bots-United: beer, babies & bots (especially the latter) "Learn to think by yourself, else others will do it for you."