context_vs_argument.js

var puts = require( "sys" ).puts
  , contextFn = function( a ){ return a && this() }
  , argFn = function( a, b ){ return b && a() }
  , time;

time = +new Date;
for ( var i = 0; i < 10e6; i++ ) contextFn.call( contextFn, contextFn );
puts( "as context: " + ( +new Date - time ) );

time = +new Date;
for ( var i = 0; i < 10e6; i++ ) argFn( argFn, argFn );
puts( "as argument: " + ( +new Date - time ) );

apply is different because it can pass a variable number of arguments which is harder to optimize for V8. I have not benchmarked it, but I suspect it to be substantially slower than just call.

I think you should go ahead with 'this'. Everything else seems like pre-mature optimization at this point. I suspect other parts of fab to be substantially slower, so you shouldn't worry about this one for now : ).

thanks, felix. your feedback is very much appreciated!

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