Well said Nicolas, I'm with you all the way on that one. Adding an array check would indeed slow things down.
cheers, Sam On Sep 11, 2007, at 3:56 AM, Nicolas Cannasse wrote: >>> if you try to access index 11 in array n, an IndexOutOfBounds >>> Exception is thrown. Same for C#, Objective C and obviously C. This >>> is fundamental and basic to all professional languages and >>> Actionscript 3 doesn't have it? Why? Who knows but it's not there. >> >> But a compiler could optinally create code for array bounds check, >> if the >> language allows defining the array size. >> I see that getMember is a slow operation, however on more >> dimensional arrays >> we lay them out as a flat array and use mulitiplacation to access >> array >> elements. > > That would be even slower. You should consider experimenting first > with > hxASM (http://haxe.org/hxasm) to manipulate the Flash9 AVM2 > bytecode and > do some timing of different operations. > > Compared to lowlevel languages compilers such as C, there is little > room > for performances improvement in AVM2. There is in fact only a few good > ways to generate bytecode from a given implementation. > > The way to get better performances is then through high level language > features support that permits the compiler to optimize things > aggressively by using the most appropriate lowlevel implementation. > > This way you all the benefits at the same time : programs are > faster to > write, easier to maintain, and runs faster. The only requirement is to > learn to use these highlevel constructs. > > Nicolas > > _______________________________________________ > osflash mailing list > [email protected] > http://osflash.org/mailman/listinfo/osflash_osflash.org _______________________________________________ osflash mailing list [email protected] http://osflash.org/mailman/listinfo/osflash_osflash.org
