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Re: NSString XOR

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Re: NSString XOR

Subject: Re: NSString XOR
From: Fritz Anderson <email@hidden>
Date: Fri, 15 Jul 2005 18:57:23 -0500

On 15 Jul 2005, at 5:38 PM, Derrick Carlin wrote:

How would I do an XOR on two NSStrings?

Strictly speaking, the question does not make sense. NSString is an abstraction that covers any of a number of possible underlying representations. An instance is an indexable sequence of Unicode characters, but the underlying bytes aren't accessible. If you want a byte buffer full of characters, you have to commit yourself to an encoding and convert the NSString to an NSData, which will yield your bytes.

How would I convert NSString into binary and back?

See -[NSString dataUsingEncoding:], <http://developer.apple.com/ documentation/Cocoa/Reference/Foundation/ObjC_classic/Classes/ NSString.html#//apple_ref/doc/uid/20000154-dataUsingEncoding_>

and -[NSString initWithData:encoding:], <http://developer.apple.com/ documentation/Cocoa/Reference/Foundation/ObjC_classic/Classes/ NSString.html#//apple_ref/doc/uid/20000154-initWithData_encoding_>

    -- F

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  >NSString XOR (From: Derrick Carlin <email@hidden>)




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