Why does choose not work here
gamblemj at gmail.com
Thu Aug 1 21:26:10 UTC 2019
On Thursday, 1 August 2019 at 21:12:51 UTC, ag0aep6g wrote:
> `choose`'s parameters aren't lazy. So the second argument is
> evaluated even when `previous is null`. That means
> `intervalRange` is called on a null `previous`. And that fails,
> of course, because `intervalRange` can't access `starts` or
> `stops` when `this` is null.
I forgot about lazy parameters. I tried changes myFilters second
parameter to lazy, but that didn't help. So I guess I'm stuck
with the "if" version using the ForwardRange interface (version
2)? Anyone have any other thoughts?
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