What's this Coffescript use of then?

Question

In Trevor Burnham's book on Coffeescript (p81) he has

newcard.save().then =>
    ...

Which is not part of a conditional or a switch statement. Is then just a joining word for the syntax or does it have a semantic purpose?

score 1 · Answer 1 · answered May 26 '15 at 22:44

1

It calls the newcard.save().then function, passing a function. It is equivalent to the following ECMAScript 6 code:

newcard.save().then(() => { ... })

answered May 26 '15 at 22:44

score 0 · Accepted Answer · answered Jun 14 '15 at 11:30

0

Of course ... It calls the newcard.save().then function - thanks @rightfold - which is in the Angular.js promises api. Not immediately obvious out of context of that api which BTW is nicely explained here.

answered Jun 14 '15 at 11:30

iainH

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What's this Coffescript use of then?

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