> Can I petition? :-)
Of course. We're always interested in
feedback on whether we're making the right decisions.
- Gordon
From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com] On Behalf Of Darron J. Schall
Sent: Saturday, March 18, 2006
9:07 AM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] AS3 ::
Multiline RegExp declarations :: Future enhancement ? ;-)
Gordon Smith wrote:
Forget StringBuilder... it's going away in B3. The player team decided
it didn't give enough performance gain in enough useful cases to justify
having both String and StringBuilder.
Doh, really? I've actually been using it a decent amount. It's
especially handy in testing the SHA1 hash of a million letter a's to verify the
hash algorithm is correct:
var millionAs:StringBuilder = new StringBuilder( '' );
millionAs.ensureCapacity( 1000000 );
for ( var i:int = 0; i < 1000000; i++ ) { millionAs.append( 'a' );
}
assertSHA1( millionAs.toString(), "34aa973cd4c4daa4f61eeb2bdbad27316534016f" );
I realize the above loop could be unrolled to make it perform even faster (by
appending more 'a's in each append call, and reducing the number of iterations
by 10x, 100x, etc). But StringBuilder in this case was a lot faster than
using a regular string.. though, I imagine this isn't really a typical
use-case.
That said, however, it would be a shame to see StringBuilder go -- especially
after having written a decent number of pages for it for an upcoming
book. Can I petition? :-)
-d
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