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jacob414/groupby.coffee

Created January 5, 2011 17:48
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A grouping (see python's itertools.groupby()) function in CoffeeScript
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groupby.coffee
# Edit 1, thx @satyr!
groupby = (iter, keyfn) ->
grouped = {}
(grouped[keyfn e] ?= []).push e for e in iter
grouped
@satyr
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satyr commented Jan 5, 2011 

groupby = (iter, keyfn) ->
  grouped = {}
  (grouped[keyfn e] ?= []).push e for e in iter
  grouped

@jacob414
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jacob414 commented Jan 5, 2011

Nice, thanks!

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