Re: [node-dev] context (thisness) to EventEmitter#on, process.nextTick, etc

2012-06-10 Thread Jorge
On Jun 8, 2012, at 8:06 PM, AJ ONeal wrote: > I would like to propose that an additional parameter, `context` be added to > core node modules that accept callbacks to give this-ness to the callback. But don't call it context please the proper name is receiver. A context in JS is much more than

Re: [node-dev] context (thisness) to EventEmitter#on, process.nextTick, etc

2012-06-10 Thread Isaac Schlueter
I don't understand why: setTimeout(function (x, y, z) { // ... }, this, 1000) is better than: setTimeout(function (x, y, z) { // ... }.bind(this), 1000) The problem is that it puts `this` at the bottom of the function, instead of signaling it at the top when you enter the function visually.

Re: [node-dev] context (thisness) to EventEmitter#on, process.nextTick, etc

2012-06-10 Thread Jorge
On Jun 10, 2012, at 9:39 AM, Isaac Schlueter wrote: > > On Sun, Jun 10, 2012 at 12:20 AM, Jorge wrote: >> On Jun 8, 2012, at 8:06 PM, AJ ONeal wrote: >> >>> I would like to propose that an additional parameter, `context` be added to >>> core node modules that accept callbacks to give this-ness

Re: [node-dev] context (thisness) to EventEmitter#on, process.nextTick, etc

2012-06-10 Thread Jimb Esser
I think what he was suggesting means the difference between setTimeout(foo.func, foo, 1000); and setTimeout(foo.func.bind(foo), 1000); which have pretty drastically different performance characteristics. That being said, compared to the overhead of setTimeout itself, or just about any async ca

[node-dev] Re: context (thisness) to EventEmitter#on, process.nextTick, etc

2012-06-10 Thread phidelta
If setTimeout(foo.func.bind(foo), 1000) is so drastically slower than setTimeout(foo.func, foo, 1000) then our aim for the benefit of the language should be to improve the performance of bind(). A lot of scenarios would benefit from improved bind() performance and we should not create kludge for th

Re: [node-dev] __proto__ vs. Object.create?

2012-06-10 Thread Brandon Benvie
__proto__ is likely going to be in the ES6 spec as at least normative optional. Recent discussions indicated there's some chance it will become full-fledged part of the spec. http://wiki.ecmascript.org/doku.php?id=strawman:magic_proto_property https://mail.mozilla.org/pipermail/es-discuss/2012

[node-dev] Re: process.nextTick semantics

2012-06-10 Thread Duncan Wilkie
> > Sorry I didn't read all of the replies, but it makes total sense to me, > nextTick should run before anything else.

[node-dev] Re: context (thisness) to EventEmitter#on, process.nextTick, etc

2012-06-10 Thread AJ ONeal
I just want to point out that there's no need for such a shim for setTimeout anyway - and it would break existing APIs - making it a particularly invalid misinterpretation of my intended request. It already takes arguments which a pretty acceptable way to work around the issue. You can pass the '