[erlang-questions] List comprehension question

[Erik Søe Sørensen]

Den 26/05/2014 13.02 skrev "Anthony Ramine" <n.oxyde@REDACTED>:
>
> That would change semantics of existing programs, no thanks.
>
> I do have plans to implement Pat ?= Expr filters, though, not reusing the
matching operator ‘=‘.

Sounds great - I never got past looking at the existing compiler code.
What's your plan (if you have one)?
As I remember it, an extension of Kernel Erlang is necessary...

>
> --
> Anthony Ramine
>
> Le 22 mai 2014 à 21:44, Rich Neswold <rich.neswold@REDACTED> a écrit :
>
> > It would be much nicer to use pattern matching and use the
comprehension's ability to treat bad matches as a filter. But I can't
replace the case statement above with:
> >
> > [{{S, NC}, SF} || {S, C} <- Reqs,
> >                   {value, {NC, SF}} = gb_trees:lookup({S, C}, T)]
>
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