remove elements during the iteration on NSMutableDictionary
remove elements during the iteration on NSMutableDictionary
- Subject: remove elements during the iteration on NSMutableDictionary
- From: "Wayne Shao" <email@hidden>
- Date: Wed, 6 Aug 2008 07:27:36 -0700
Hi
Please see the question in the comments of the following code.
NSMutableDictionary* aDictionary = (initialized with some objects)
for (id theKey in aDictionary) {
id anObject = [[aDictionary objectForKey:theKey] retain];
[aDictionary removeObjectForKey:theKey];
// Question: will this removal break or corrupt the loop of enumerating the
elements?
[anObject someMessage];
}
in java, Iterators allow the caller to remove elements from the underlying
collection during the iteration. is there similar semantics in objective-c?
--
Wayne Shao
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