get the key in async.each?

[btmdave]

Is there a way to get the key associated to the array item being processed within async.each?

Thank you!

[Volox]

+1

[gewfy]

+1

[juanpaco]

I'm in need of this one too. I'm happy to submit a pull request.

To get the discussion going, which way of fixing this is preferred?

1. Supply an iterator with arity of 3 to get the index (e.g. function(item,i,next))
2. New API functions to get the index (e.g. eachWithIndex and eachWithIndexSeries)

I favor the first option, but does that risk breaking people's iterators that expect the 2nd argument to be the callback?

[juanpaco]

Related to #321, #264, #72

[theoephraim]

+1