Anonymous functions with call syntax in CoffeeScript

Question

How to write somting like this in CoffeeScript

foo(function() {
    return doSomethingCompicated();
}())

That is the same as foo(doSomethingCompicated()).. why so complicated (pun intended)? — Felix Kling
– Felix Kling, Commented Nov 6, 2011 at 13:33
this is only example... i have annonymous function with multiple lines of code... — Patrik Votoček
– Patrik Votoček, Commented Nov 6, 2011 at 13:46
And the same question applies. Why the anonymous function if you're just calling it immediately? Is it a question of namespace pollution? — Marnen Laibow-Koser
– Marnen Laibow-Koser, Commented Nov 10, 2011 at 17:45

thejh · Accepted Answer · 2011-11-06 13:25:22Z

2

foo do -> doSomethingComplicated()

compiles to

foo((function() {
  return doSomethingComplicated();
})());

You could also write this:

foo do -> do doSomethingComplicated

answered Nov 6, 2011 at 13:25

thejh

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Comments

twf · Accepted Answer · 2012-03-27 18:53:56Z

0

I won't ask why this is needed, but here is a direct translation (without do):

foo (-> doSomethingComplicated())()

Note the space after foo.

answered Mar 27, 2012 at 14:39

twf

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