On Jan 31, 2010, at 9:49 PM, Kyle Sluder wrote:
> On Sun, Jan 31, 2010 at 6:28 PM, Stuart Malin <stu...@zhameesha.com> wrote:
>> If I use +dataWithBytes:length: then I need to specify a length 1 greater,
>> and that additional byte must be set to 0 (to null terminate the string).
>> So, I could use NSMutableData, then -resetBytesInRange: to zero out the last
>> byte, which requires creating an NSRange struct, and that all seems heavier
>> than just using the C code. But then, the processor is fast, and this is
>> code that is run rarely, so optimizing isn't important. I guess it is just
>> a question of style...
>
> This is not true. The data you provide does not need to be a
> null-terminated C string. Though I'd use Stephen's approach because
> you don't have to create a wrapper data object. Proof that it works:
>
> #import <Foundation/Foundation.h>
>
> int main(int argc, char **argv) {
> char p[5] = {'H', 'e', 'l', 'l', 'o'};
> NSString *s = [[NSString alloc] initWithBytes:p
> length:5 encoding:NSUTF8StringEncoding];
> NSLog(@"s = %@", s);
> [s release];
> return 0;
> }
Ah, in my desire to use a class factory method, I overlooked
initWithBytes:length:encoding: which does exactly what I need. It is
interesting to me that a class convenience method wasn't provided as such would
replace the deprecated function. Also wish that the documentation for
stringWithCString:length: suggested using this init method with autorelease.
Anyway, thanks!
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