Equivalent Ruby .times in Coffeescript Equivalent Ruby .times in Coffeescript ruby ruby

Equivalent Ruby .times in Coffeescript


console.log 'hi' for [1..3]

To also handle 0 correctly:

console.log 'hi' for [1..n] if n

Or with prototype magic:

Number::times = (fn) ->  do fn for [1..@valueOf()] if @valueOf()  return3.times -> console.log 'hi'

Note that the second method isn't recommended because changing the Number prototype has global effects.

Edit: Changed according to @BrianGenisio's comment (.prototype. -> ::)

Edit 2: fixed handling of 0, thanks @Brandon


Since you're already using Underscore.js along with CoffeeScript:

_(3).times -> console.log('hi')


JavaScript arrays (at least the modern ones) have a forEach method and CoffeeScript [1..3] ranges are arrays so you could do this:

[1..3].forEach -> console.log 'hi'

One warning though: this might be a bit hard on the browser if your n in [1..n] is large as you'll be building a large array just to get a convenient notation; but if n is small then the overhead of building the array shouldn't matter that much.