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Filter with CoffeeScript list comprehensions

The CoffeeScript docs state that list comprehensions should be able to do the select/filter operations:

They should be able to handle most places where you otherwise would use a loop, each/forEach, map, or select/filter.

You'd imagine you could do something in one line like result = item for item in list if item % 2 == 0 However the closest I can come is

list = [1,2,3,4] result = [] for item in list   if item % 2 == 0 then result.push item 

Whats the most concise way to filter a list in CoffeeScript?

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Derek Dahmer Avatar asked Jan 29 '11 22:01

Derek Dahmer


1 Answers

result = (item for item in list when item % 2 == 0) 

edit : added result =

like image 200
Adrien Avatar answered Sep 27 '22 20:09

Adrien