commit 1fbb51aa132d475ea5918edd0643067830de534e
author scottb@google.com <scottb@google.com@8db76d5a-ed1c-0410-87a9-c151d255dfc7> Mon Sep 15 22:12:59 2008 +0000
committer scottb@google.com <scottb@google.com@8db76d5a-ed1c-0410-87a9-c151d255dfc7> Mon Sep 15 22:12:59 2008 +0000
tree 6c4fb69db1363cae742785547af9e72dc0fcc0c3
parent a8e83c84f11dcba0dfc05d95bcd37a8869065dde

Two tweaks to improve Array instantiation performance.

1) For reference-type arrays, we no longer need to initialize to 'null' explicitly since 'undefined' works just as well.

2) Instead of caching a protoTypeArray and using for-in to copy expandos, cache the names and values in a pair of arrays.  Array iteration is generally faster than for-in.  This also uses the "static-initializer-inner-class" pattern to avoid lazy checks and also factor the code out.

Review by: bobv

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@3651 8db76d5a-ed1c-0410-87a9-c151d255dfc7