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Erasing an iterator in a loop

Drew Sikora · 2003-01-22T20:51:38

typedef vector[int] nums; typedef vector[int]::iterator num_handle; // assume this is filled with random numbers nums my_numbers; for (num_handle iter=my_numbers.begin(); iter!=my_numbers.end(); ++iter) if (*iter == 5) my_numbers.erase(iter); This code does not work as well as I intended. In fact it doesn't work at all I know I'm using a vector container in this example but I get the same result using a list container too. I guess erasing the current iterator breaks the pointer chain and when ++iter comes around it points to no where. I need a way to patch that up so I can delete iterators in a loop. Anyone? btw - the [] should be angle brackets I know but, you know... html tags and all... _________________________________________________________________ Drew Sikora A.K.A. Gaiiden ICQ #: 70449988 AOLIM: DarkPylat Blade Edge Software Staff Member, GDNet Public Relations, Game Institute 3-time Contributing author, Game Design Methods , Charles River Media Online column - Design Corner at Pixelate Unnoficial IGDA chat! [polaris.starchat.net -> #igda] NJ IGDA Chapter - NJ developers unite!! [Chapter Home | Chapter Forum] "Real programmers don't work from 9 to 5. If any real programmers are around at 9am it's because they were up all night." -Anon. "It's not the size of the source that matters, it's how you use it" - Self

General and Gameplay Programming Programming

Started by Gaiiden January 18, 2003 06:00 PM

29 comments, last by Gaiiden 21 years, 2 months ago

TheBlackJester

142

January 22, 2003 08:51 PM

Don''t increment the iterator in the loop for statement, rather, increment it in an else statement after the if test.

"With my feet upon the ground I lose myself between the sounds and open wide to suck it in, I feel it move across my skin. I''m reaching up and reaching out. I''m reaching for the random or what ever will bewilder me, what ever will bewilder me. And following our will and wind we may just go where no one''s been. We''ll ride the spiral to the end and may just go where no one''s been." - Maynard James Keenan Name: TheBlackJester
Team: Wildfire Studios

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O A.D.
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"With my feet upon the ground I lose myself between the sounds and open wide to suck it in, I feel it move across my skin. I'm reaching up and reaching out. I'm reaching for the random or what ever will bewilder me, what ever will bewilder me. And following our will and wind we may just go where no one's been. We'll ride the spiral to the end and may just go where no one's been." - Maynard James Keenan Name: [email=darkswordtbj@hotmail.com]TheBlackJester[/email]Team: Wildfire Games
Projects O A.D.The Last Alliance

Erasing an iterator in a loop

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Erasing an iterator in a loop

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