If it was up to me, I’d add most if not all Underscore.js functions to the standard library (possibly via a module). The one function I most often miss is _.range() [1], which can be used for all kinds of things, including for filling an array with values:
> Array.range(5).map(() => 'x') [ 'x', 'x', 'x', 'x', 'x' ] A more principled approach to determine candidates for ES6 inclusion: search large code bases that depend on Underscore and determine how much each of its functions is actually used. [1] http://underscorejs.org/#range On May 16, 2013, at 23:02 , John Terenzio <[email protected]> wrote: > Many scripting languages, such as Ruby, PHP, and Python (via the random > module), have a built-in for properly shuffling an array. I propose adding > Array.prototype.shuffle to the ES spec. I think it should act like > Array.prototype.reverse, shuffling the array in place and returning a > reference to it. It should use the Fisher-Yates algorithm. See > https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle > > Since this functionality is missing, some less-seasoned developers fall into > the trap of using the "sort by random" method, which produces bias. See > http://sroucheray.org/blog/2009/11/array-sort-should-not-be-used-to-shuffle-an-array/ > > In a perfect world, this would use a better random number generator than the > existing Math.random, but for now an implementation like the one below would > still be a vast improvement over having to implement manually and possibly > incorrectly. See https://bugzilla.mozilla.org/show_bug.cgi?id=322529 > > Example implementation: https://gist.github.com/jterenzio/28bb972f3abb7618b14b > > I don't think adding this to the spec would cause many compatibility issues > and the implementation should be very straightforward. Let me know what you > think! > > Best, > John > _______________________________________________ > es-discuss mailing list > [email protected] > https://mail.mozilla.org/listinfo/es-discuss -- Dr. Axel Rauschmayer [email protected] home: rauschma.de twitter: twitter.com/rauschma blog: 2ality.com
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