On Mon, Oct 10, 2011 at 3:09 PM, Brendan Eich <bren...@mozilla.com> wrote:
> On Oct 10, 2011, at 1:41 PM, Bob Nystrom wrote:
>
> On Mon, Oct 10, 2011 at 1:33 PM, Dean Landolt <d...@deanlandolt.com>wrote:
>
>>
>> Here's an example:
>>
>>>
>>> let tree = [['a', 'b', 'c'], [['d', 'e'], 'f'], ['g']];
>>>
>>> let inOrder = walk(tree);
>>> for (node of walk(tree)) alert(node); // a, b, c, d, ...
>>>
>>> walk(tree) {
>>> if (typeof tree == 'string') {
>>> yield tree; // leaf
>>> } else {
>>> yield* walk(tree); // branch
>>> }
>>> }
>>>
>>>
>>> What would the above look like without generators?
>>>
>>
>>
>> Woah there -- where does this syntax come from? Was `walk(tree) {...}`
>> supposed to be `function* walk(tree) {...}` instead? Or is this intended to
>> represent some sort of method generator? If the latter, doesn't this need
>> some mechanism to distinguish it from a non-generator method?
>>
>
> Whoops, my mistake. Too much time working on the class proposal where
> "function" isn't needed for methods.
>
>
> I spy a Dart ;-).
>
>
> Yes, that should be function*.
>
>
> Still a great delegated generator example. Thanks,
>
Bob sent me a more complete and much more convincing example off line. It
was more convincing because he had three different algorithms use the same
iterator. Did not convert me but I am at least moved out of the "no way"
column.
jjb
>
> /be
>
>
>
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