>> 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
