Am Mi,06.08.2008 um 16:27 schrieb Wayne Shao:
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?
http://developer.apple.com/documentation/Cocoa/Conceptual/ObjectiveC/Articles/chapter_8_section_1.html#/
/apple_ref/doc/uid/TP30001163-CH18-SW1
Enumeration is “safe”—the enumerator has a mutation guard so that if
you attempt to modify the collection during enumeration, an exception
is raised.
Amin
BTW: This looks like a memory leak …
--
Wayne Shao
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Amin Negm-Awad
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