Could the iterator protocol be extended to also have a `current` or `prev`
property, which contains the result of the previous call to `next`? If
`next` has never been called, presumably this property would return
`undefined`.
I've searched the archives for this question, and the only
Marcus Stade wrote:
This is assuming that the `current` or `prev` property is indeed
implemented by the engine and not user land, as that indeed both
carries implementation cost and the risk out running out of sync. Is
there any way other than generator functions to implement iterators?
Are
Le 23/03/2014 19:24, Brendan Eich a écrit :
Marcus Stade wrote:
This is assuming that the `current` or `prev` property is indeed
implemented by the engine and not user land, as that indeed both
carries implementation cost and the risk out running out of sync. Is
there any way other than
On Sun, Mar 23, 2014 at 7:37 PM, David Bruant bruan...@gmail.com wrote:
Any old object. It's a structural or duck-typed protocol.
I see, this was the bit of insight I was missing. Thanks!
-- Marcus
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On 3/23/14 at 11:24 AM, bren...@mozilla.org (Brendan Eich) wrote:
Marcus Stade wrote:
This is assuming that the `current` or `prev` property is
indeed implemented by the engine and not user land, as that
indeed both carries implementation cost and the risk out
running out of sync. Is there
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