Comprehensions, Where Art Thou?

Kevin Smith zenparsing at gmail.com
Mon Aug 11 11:51:29 PDT 2014


>
>
> Which comprehensions? Array comps, no, but see my next mail about the
> generalized from 1 to N point, no pmap/mappar, etc.
>
> Generator expressions AKA generator comprehensions are less
> well-motivated, even though laziness is absolutely required for (e.g.)
> Norvig's Sudoku solver not to diverge. The use of () -- already an
> overloaded delimiter pair -- and the 1 vs. N problem bite harder there.
>
> Sure, we could have array comprehensions and the more general LINQ-style
> syntax+protocols together. But it's plausible based on Dave's gists that we
> won't need much or any syntax, and TC39 isn't willing to call that right
> now given how ES6 has slipped. So "defer" or "cut" (what's the diff? Main
> thing is to get to rapid-er release and ES7/8/etc. or "annuals") won.
>
>
Thanks for the explanation.  : )
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