Re: NSScanner instert space every 2 characters
Re: NSScanner instert space every 2 characters
- Subject: Re: NSScanner instert space every 2 characters
- From: Ben Kazez <email@hidden>
- Date: Wed, 27 Jul 2005 12:17:08 -0400
My apologies for not changing the subject line on my previous post.
Here's the message again, for the sake of sites that organize Cocoa-dev
messages based on subject lines. Sorry.
================
On Wed, 27 Jul, Julien Palmas wrote:
I have a NSString and I would like to insert a space between every 2
characters. I just would like to know if NSScanner would be of any
use for this task or if I should iterate myself through the string.
Thanx in advance.
NSScanner is for isolating tokens from a string; you don't need it for
iterating a string. Something like the following should work as a
category on NSString:
// I'm on a PC at work. I haven't even tried compiling this, so treat
// it as a very rough estimate.
- (NSString *)stringByPaddingWithString:(NSString *)aString
atInterval:(unsigned int)interval {
NSMutableString *ret = [self mutableCopy];
// This puts aString at the beginning, too. I'm not sure if this is
// what you want. You can start index out at paddingStringLength
// instead of 0 to avoid this.
unsigned int myLength = [self length];
unsigned int paddingStringLength = [aString length];
for (unsigned int index = 0; index < length; index += interval
+ paddingStringLength) {
// It would probably be faster to use appendString.
[ret insertString:aString atIndex:index];
}
return [ret autorelease];
}
Ben
--
Ben Kazez
http://www.benkazez.com/
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