Proxies and bind (Was: November 20, 2013 Meeting Notes)

# Tom Van Cutsem (12 years ago)

I wasn't there on day 2 so I may be lacking context, but I'd like to clarify some parts in the notes re. proxies and Function.prototype.bind:

2013/11/27 Rick Waldron <waldron.rick at gmail.com>

EA: What happens when do bind on a function proxy?

MM: fail?

DH: This is shocking.

MM: bind is a perfect example, there is no conflict between security and transparency. You'd like bind to work on proxy functions

Not sure why Mark mentioned that bind fails on function proxies. It doesn’t:

js> var o = {}
js> var p = new Proxy(function() { return this; }, {})
js> var f = p.bind(o)
js> f() === o
true

(and this works regardless of whether you use p.bind(o) or Function.prototype.bind.call(p,o))

I wasn't there on day 2 so I may be lacking context, but I'd like to
clarify some parts in the notes re. proxies and Function.prototype.bind:

2013/11/27 Rick Waldron <waldron.rick at gmail.com>

> EA: What happens when do bind on a function proxy?
>
> MM: fail?
>
> DH: This is shocking.
>
> MM: bind is a perfect example, there is no conflict between security and
> transparency. You'd like bind to work on proxy functions
>

Not sure why Mark mentioned that bind fails on function proxies. It doesn’t:

js> var o = {}
js> var p = new Proxy(function() { return this; }, {})
js> var f = p.bind(o)
js> f() === o
true

(and this works regardless of whether you use p.bind(o) or
Function.prototype.bind.call(p,o))

Cheers,
Tom
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