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- (OFString*)stringByAppendingString: (OFString*)string_
{
OFMutableString *new;
new = [OFMutableString stringWithString: self];
[new appendString: string_];
/*
* Class swizzle the string to be immutable. We declared the return type
* to be OFString*, so it can't be modified anyway. But not swizzling it
* would create a real copy each time -[copy] is called.
*/
new->isa = [OFString class];
return new;
}
- (OFString*)stringByPrependingString: (OFString*)string_
{
OFMutableString *new;
new = [OFMutableString stringWithString: string_];
[new appendString: self];
/*
* Class swizzle the string to be immutable. We declared the return type
* to be OFString*, so it can't be modified anyway. But not swizzling it
* would create a real copy each time -[copy] is called.
*/
new->isa = [OFString class];
return new;
|