NSString Retain Count of 2147483647
NSString Retain Count of 2147483647
- Subject: NSString Retain Count of 2147483647
- From: Thomas Wetmore <email@hidden>
- Date: Wed, 24 Jun 2009 10:26:16 -0400
I know you're not supposed to use retain counts when debugging memory
issues, but I have found it very (VERY) useful at times. While looking
at retain counts of NSStrings I have found an oddity that I think I
understand, but would like confirmation if possible.
When I use NSScanners to chop strings up, whenever I pull a one-
character string out of a scanner that string has a retain count of
2147483647 (2**32 - 1). My guess is that there are pre-allocated, one-
character strings for all (most?) characters that are given this
maximum possible value of a retain count, the digital equivalent of
infinity. Then these one-character strings can be released pretty much
to one's heart's content but never deallocated unless there is an
incredible bug, in which case I'm guessing that another such one-
character string would be allocated to replace it.
Can anyone confirm this suspicion?
Thanks.
Tom Wetmore, curious Xcoder
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