I also commented on JIRA with information about a best practice when using for-in in JavaScript that avoids that issue.
- Josh On Mon, Apr 25, 2016 at 11:33 AM, Harbs <harbs.li...@gmail.com> wrote: > I don’t think I realized that for each can be used for normal Objects in > ActionScript. I always assumed it was restricted to array-like objects to > loop through the indexed values. > > Like I mentioned in the JIRA here: > https://issues.apache.org/jira/browse/FLEX-35070 that for-in is not a > good replacement for cases where Array has custom properties or methods > added to it (which happens in Javascript). > > On Apr 25, 2016, at 6:22 PM, Josh Tynjala <joshtynj...@gmail.com> wrote: > > > for-each loops are commonly used with string keys too, so I'm guessing > > that's why the code gets converted to a for-in loop. That would be fully > > compatible with both integer and string keys. I guess if the target is an > > Array or Vector, it would be possible to use a for(;;) loop instead. It > > could still potentially break on edge cases, though. > > > > - Josh > > > > On Mon, Apr 25, 2016 at 12:37 AM, lizhi <s...@qq.com> wrote: > > > >> i do not konw the best code,but this code fast than now > >> > >> //slow code > >> var foreachiter0_target = this.ss; > >> for (var foreachiter0 in foreachiter0_target) > >> { > >> var s = foreachiter0_target[foreachiter0]; > >> { > >> }} > >> > >> //more fast code > >> var len=this.ss.length; > >> for(var i=0;i<len;i++){ > >> var s = this.ss[i]; > >> } > >> > >> > >> > >> -- > >> View this message in context: > >> > http://apache-flex-development.2333347.n4.nabble.com/flexjs-foreach-very-slow-tp52571.html > >> Sent from the Apache Flex Development mailing list archive at > Nabble.com. > >> > >
