domenic at domenicdenicola.com (2013-07-19T15:52:23.702Z)
I referenced Function.length instead of Function#length. Here's [the
actually relevant spec][1]:
> The value of the length property is an integer that indicates the typical number of arguments expected by the function. However, the language permits the function to be invoked with some other number of arguments. The behaviour of a function when invoked on a number of arguments other than the number specified by its length property depends on the function. This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }.
Everything else still applies. (Hopefully) goes without saying, but the
same should apply [to GeneratorFunction instances as well][2].
[1]: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-15.3.4.1
[2]: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-15.19.3.4
I referenced Function.length instead of Function#length. Here's the actually relevant spec [1]: The value of the length property is an integer that indicates the typical number of arguments expected by the function. However, the language permits the function to be invoked with some other number of arguments. The behaviour of a function when invoked on a number of arguments other than the number specified by its length property depends on the function. This property has the attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: false }. Everything else still applies. (Hopefully) goes without saying, but the same should apply to GeneratorFunction instances as well [2]. [1] http://people.mozilla.org/~jorendorff/es6-draft.html#sec-15.3.4.1 [2] http://people.mozilla.org/~jorendorff/es6-draft.html#sec-15.19.3.4 On Tue, Jul 16, 2013 at 3:53 PM, Jeremy Martin <jmar777 at gmail.com> wrote: > This is a resurrection of an earlier proposal from Nathan Wall [1], that > would make Function.length configurable. The initial proposal was to make > it writable, but configurable instead was suggested by Claude Pache [2]. > > Nathan's original post [1] does a good job of outlining the motivation, so > I won't reiterate them here. From what I can gather, making > Function.length configurable seemed to receive a positive response [3] [4] > [5], but the thread apparently died. Perhaps I just need to find a new API > paradigm, but I run into this issue on a regular basis writing callback > utilities, and would be very interested in seeing this move forward. > > For convenience, the Function.length spec from the latest draft [6]: > > This is a data property with a value of 1. This property has the > attributes { [[Writable]]: false, [[Enumerable]]: false, [[Configurable]]: > false }. > > > [1] http://www.mail-archive.com/[email protected]/msg21786.html > [2] http://www.mail-archive.com/[email protected]/msg21792.html > [3] http://www.mail-archive.com/[email protected]/msg21793.html > [4] http://www.mail-archive.com/[email protected]/msg21794.html > [5] http://www.mail-archive.com/[email protected]/msg21795.html > [6] http://people.mozilla.org/~jorendorff/es6-draft.html#sec-15.3.2.2 > > Thanks, > > -- > Jeremy Martin > 661.312.3853 > http://devsmash.com > @jmar777 > -- Jeremy Martin 661.312.3853 http://devsmash.com @jmar777 -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.mozilla.org/pipermail/es-discuss/attachments/20130716/917d5b4c/attachment.html>