[Webkit-unassigned] [Bug 26382] [ES5] Implement Function.prototype.bind

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=26382





--- Comment #8 from Caio Marcelo de Oliveira Filho <caio.oliveira at openbossa.org>  2010-04-25 11:00:04 PST ---
There's a benchmark for the bind() function, which includes both Prototype.js
trunk implementation and the one pointed out by kangax:

http://www.broofa.com/Tools/JSLitmus/tests/PrototypeBind.html

I've changed my patch to rename the native bind to 'bindNative' (so no
collisions with any other implementation), and added a case for it.

My conclusion is that the situation isn't as bad as we thought. The difference
between my previous tests is that real world 'bind()' implementations perform
worse than special tuned functions that I was using.

Results in the following chart -> 
http://chart.apis.google.com/chart?chtt=Prototype%20bind()%20Performance|Ops/sec%20(Safari%20533.7%20on%20Linux)&chts=000000,10&cht=bhg&chd=t:8258481,7556237,6140297,1255825,873981,641343,1546185,981289,788777,20532293,966813,778470,20099368,2898464,2094766,4424939,3588929,509668,4555667,2904887,2065063&chds=0,20532293&chxt=x&chxl=0:|0|20.5M&chsp=0,1&chm=tnative%20bind(obj)(8.3M),000000,0,0,10|tnative%20bind(obj\,1\,2)(7.6M),000000,0,1,10|tnative%20bind(obj\,1\,2[\,3\,4])(6.1M),000000,0,2,10|t1.6.0.3%20bind(obj)(1.3M),000000,0,3,10|t1.6.0.3%20bind(obj\,1\,2)(874K),000000,0,4,10|t1.6.0.3%20bind(obj\,1\,2[\,3\,4])(641.3K),000000,0,5,10|ttrunk%20bind(obj)(1.5M),000000,0,6,10|ttrunk%20bind(obj\,1\,2)(981.3K),000000,0,7,10|ttrunk%20bind(obj\,1\,2[\,3\,4])(788.8K),000000,0,8,10|tTobie's%20bind(obj)(20.5M),000000,0,9,10|tTobie's%20bind(obj\,1\,2)(966.8K),000000,0,10,10|tTobie's%20bind(obj\,1\,2[\,3\,4])(778.5K),000000,0,11,10|tBroofa's%20bind(obj)(20.1M),000000,0,12,10|tBroofa's%20b
 ind(obj\,1\,2)(2.9M),000000,0,13,10|tBroofa's%20bind(obj\,1\,2[\,3\,4])(2.1M),000000,0,14,10|tKangax's%20bind(obj)(4.4M),000000,0,15,10|tKangax's%20bind(obj\,1\,2)(3.6M),000000,0,16,10|tKangax's%20bind(obj\,1\,2[\,3\,4])(509.7K),000000,0,17,10|tImproved%20bind(obj)(4.6M),000000,0,18,10|tImproved%20bind(obj\,1\,2)(2.9M),000000,0,19,10|tImproved%20bind(obj\,1\,2[\,3\,4])(2.1M),000000,0,20,10&chbh=15,0,5&chs=250x490

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