Re: NSMutableString appendString: "appending self" allowed?

• Subject: Re: NSMutableString appendString: "appending self" allowed?
• From: Chris Suter <email@hidden>
• Date: Thu, 30 Aug 2007 19:37:44 +1000
• Delivered-to: email@hidden
• Delivered-to: email@hidden
• Dkim-signature: v=1; a=rsa-sha1; c=relaxed; d=coriolis-systems.com; h= in-reply-to:references:mime-version:content-type:message-id:cc: from:subject:date:to; q=dns/txt; s=aug07; bh=HmMcYgSNseK01vPna1b AQXw+LDg=; b=BhbMJMpEbbdy/opk4LxLUeo0OSU6eFKwrf9E7/VRy5kS/NF7gIG wdFflPT2uMdnKQn7m2M4SZ6m7EFhXq/8IKclgQFqymxK6zwXYd2C4N5SF+GjfT1J GR+bQwQN9DguzoGAywtDA9gnuYB8wMy2zNV9h/Jq3hRzX7qsk6WLZOdU=

On 30/08/2007, at 2:46 PM, Manfred Schwind wrote:

Hi,

is the following call allowed?

[someMutableString appendString:someMutableString];

It effectively appends a given string to itself, so that it gets doubled. (E.g. "Oh" will become "OhOh" etc.)

It works at least on 10.4.10, but it's not documented wether I can use the receiver as parameter in the appendString selector for NSMutableString. Can someone (maybe from Apple) approve that this works also for older system versions?
I can think of strange side effects when appending a string to itself, depending on the internal implementation.

Or should I better use this:

[someMutableString appendString:[[someMutableString copy] autorelease]];

or

[someMutableString appendString:[someMutableString subStringToIndex: [someMutableString length]]];

or something like that?

Have a look at the source code. It's open source.

- Chris

Attachment: smime.p7s
Description: S/MIME cryptographic signature

_______________________________________________

Cocoa-dev mailing list (email@hidden)

Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com

Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/email@hidden

This email sent to email@hidden

• Follow-Ups:
  • Re: NSMutableString appendString: "appending self" allowed?
    • From: Manfred Schwind <email@hidden>

• Prev by Date: Re: NSOutlineView Drop
• Next by Date: Re: [Q] Remote Messaging : Keep sending msg to a destroyed remote object
• Previous by thread: Re: NSMutableString appendString: "appending self" allowed?
• Next by thread: Re: NSMutableString appendString: "appending self" allowed?
• Index(es):
  • Date
  • Thread