Question

I have an NSAttributedString s and an integer i and I’d like a function that takes s and i and returns a new NSAttributedString that has a (stringified) i prepended to s.

It looks like some combination of -stringWithFormat:, -initWithString:, and -insertAttributedString: would do it but I’m having trouble piecing it together without a lot of convolution and temporary variables.

More generally, pointers to guides on making sense of NSAttributedString and NSMutableAttributedString would be awesome.

Answer 1

Here’s a one-liner for it, thanks to the friendly people on the adium developers’ IRC channel. It takes an NSAttributedString s and an integer i.

return [[[NSMutableAttributedString alloc]           initWithString:[NSString stringWithFormat:@'%i %@', i, [s string]]]         autorelease];