Where would noop be used in Ceylon

Question

I am playing around with this beautiful language and saw a function called noop.

As the documentation says it's a void function that does nothing!!

So why would I use a function that does nothing? Is it for adding "Nop" in assembly (for pipeline etc) but then this would be too low-level wouldn't it?

hmmmm why downvote, the documentation doesn't tell any usecases does it ? — niceman, Jul 24 '15 at 21:07
yeah, totally unfair downvote. But you should correct the title and comment to be `noop`, not `noob`. — John Vasileff, Jul 24 '15 at 21:34

score 8 · Accepted Answer · answered Jul 24 '15 at 21:33

noop() can take the place of any void (or Anything returning) function. So it's useful to use as a value if you are calling a function or creating an object that requires you to pass in an event handler or callback function, but you aren't interested in responding to the event.

score 7 · Answer 2 · answered Jul 26 '15 at 16:43

7

noop() is also useful as the default value of an an optional parameter of a function, for example:

void foo(void bar(Integer i) => noop(i)) {}

Or:

void foo(Anything(Integer) bar = noop) {}

answered Jul 26 '15 at 16:43

Gavin King

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Where would noop be used in Ceylon

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