Re: [flexcoders] AS3 :: Multiline RegExp declarations :: Future enhancement ? ;-)

Michael Schmalle Sat, 18 Mar 2006 15:25:02 -0800

Darron, blush...

If you looked at my php implementation(my as2 doc generator) it had all that plus some hex stuff. I was using this as a test parsing and I never use dollar signs, slipped my mind.

Thanks for reminding me ;-)

And for that first idea, haha great!!! Man 4 eyes are better than 2!

Peace, Mike

On 3/18/06, Matt Chotin <[EMAIL PROTECTED]> wrote:

+= is much improved from when we needed StringBuilder earlier in the cycle. The gains of StringBuilder were reduced to a very limited number of cases and it was decided that the amount of Player code required along with testing just didn't make it worthwhile. We're still investigating to make sure that some of our stuff didn't degrade but it's likely that we'll fix the String class rather than re-introduce StringBuilder if there are problems.

Matt

From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Darron J. Schall
Sent: Saturday, March 18, 2006 12:07 PM

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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Re: [flexcoders] AS3 :: Multiline RegExp declarations :: Future enhancement ? ;-)

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