RE: AS 2.0 optimising.. 2004-03-16 - By EECOLOR
Back
correct, im glad we agree :)
Greetz Erik
At 11:49 16-3-2004, you wrote:
> > In the last example the lookup of a word is very fast, because u dont need
> > to loop.
> >
> > What im trying to say is that the difference in speed depends on the
>usage.
> >
> Right, but in an individual lookup, using a numeric index is faster and
>uses less memory than a string. If you *have* to loop through a bunch of
>items, then an array will be faster. If you can avoid the loop by going
>directly to the object you need by name, then an array obviously isn't a
>good choice. That choice is easy, the place where this becomes important is
>in the difference between these:
>
>for(var i=0;i<limit;i++){
> doSomething(object["sub"+i]);
>}
>
> or
>
>for(var i=0;i<limit;i++){
> doSomething(object[i]);
>}
>
> The second should execute faster, the amount varying directly with the
>size of the integer "limit".
>
>ryanm
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