On Jan 5, 2012, at 14:54 , Andrea Giammarchi wrote:
> Here the whole post with better examples plus the proposed solution that
> would be nice to have in JS.Next
> http://webreflection.blogspot.com/2012/01/improving-functionprototypebind.html
I don’t use bound() and function expressions very often (I prefer that = this
for most use cases).
However, the register/unregister pitfall is indeed real. How about the
following solution?
Function.prototype.attachTo = function (obj) {
this.bound = this.bind(obj);
return this;
}
var obj = {
mymethod: function () {
// ...
}.attachTo(obj)
}
generic.addEventListener("stuff", obj.mymethod.bound, false);
generic.removeEventListener("stuff", obj.mymethod.bound, false);
Python always binds methods that you access via obj.mymethod. Multiple accesses
are equal (which I think is carried over to data structures), but not the same
reference.
It’s a shame that we are really close in JavaScript, with the ECMA-262
specification using references.
--
Dr. Axel Rauschmayer
a...@rauschma.de
home: rauschma.de
twitter: twitter.com/rauschma
blog: 2ality.com
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