Coffeescript: Invoking call on function declaration

Question

Computed properties on ember views have the form

myComputedProperty: function() {
    return doSomething();
}.property()

However, when I write this in coffescript as

myComputedProperty: ->
    doSomething()
.property()

I get an error like "Parse error on line 5: Unexpected '.'". Am I doing something wrong, or is this a quirk of the interpreter I'm using (Mindscape VS plugin)?

possible duplicate of Ember computed properties in Coffeescript — mu is too short
– mu is too short, Commented Oct 26, 2012 at 17:15

Christoph Leiter · Accepted Answer · 2012-10-26 07:21:27Z

1

The grammar of the language doesn't support this. You have to add parenthesis around the function:

myComputedProperty: (->
    doSomething()
).property()

answered Oct 26, 2012 at 7:21

Christoph Leiter

9,3564 gold badges32 silver badges37 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Guillaume86 · Accepted Answer · 2012-10-26 09:18:57Z

1

You can add () around the function, or you can make the syntax more coffeescript friendly:

prop = (fn) -> fn.property()

myComputedProperty: prop ->
    doSomething()

answered Oct 26, 2012 at 9:18

Guillaume86

14.4k4 gold badges56 silver badges57 bronze badges

Collectives™ on Stack Overflow

Coffeescript: Invoking call on function declaration

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related