for copying arrays and/or converting iterables like 'arguments' to arrays,
// arguments -> array newArray = Array.slice( arguments ); // copy a->b copy = Array.slice( original ); --- provides a small increase in speed for a variety of array operations contained in prototype also for array iteration: // declare var outside of loop -- slightly faster... var i; for( i=100000; i--; ){ // execute code here } --- in cases where order is not relevant, this method benchmarks faster than any other in all browsers tested ( *safari/mac not tested ) also, for generating unique arrays: function uniqueArray( array ){ var uniqueHash = {}, unique=[], i; for( i=array.length; i--; ){ if( !uniqueHash[ a[i] ]){ unique.push( array[i] ); uniqueHash[ a[i] ] = true; } } return unique; } and is there any reason not to use String.replace([regexp], function() {} ) for a large part of the functions implemented by iterating through arrays? this can be blazingly fast even for complicated regex as long as they are precompiled, and the code is far more readable and compact (i.e. camelization, templating, etc etc ) there are some other much more significant optimizations which might be worthwhile and i would appreciate feedback once i clean up the code a bit more... and --- a big kudos to the prototype team -- discovering prototype way back when completely changed the way i code javascript - thanks. ss --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Prototype: Core" group. To post to this group, send email to prototype-core@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/prototype-core?hl=en -~----------~----~----~----~------~----~------~--~---