Re: [sc-dev] ListPatterns: a modest proposal

[James Harkins <jamshark70@xxxxxxxxx>]

Tested and committed:

ListPattern : Pattern {
var <>list, <>repeats=1;


*new { arg list, repeats=1;
^super.new.list_(
list.isKindOf(SequenceableCollection).if({ list }, { [list] })
).repeats_(repeats)
}
.....
}

H. James

On Monday, Jan 26, 2004, at 22:17 US/Eastern, James Harkins wrote:

> x = Pseq(1, inf).asStream;
> x.next
>
> Good way to hang sclang. The reason is that x.list.size is always 0, so the .embedInStream never gets called and the Pseq stream loops infinitely.
>
> Would there be any harm in checking, at instantiation, to make sure the list in a ListPattern is really a SequenceableCollection? sclang shouldn't be that easy to break.
>
> list.isKindOf(SequenceableCollection).not.if({ list = [list] });
>
> This "feature" has tripped me up more than once. It just cost me the better part of an hour. Grr.
>
> H. James
> ____________________________________
>
> H. James Harkins /// dewdrop_world
> http://www.duke.edu/~jharkins
>
> "If attacked by a lion, thrust your arm down his throat.
> This takes some practice."  -- Cyril Connolly
>
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____________________________________

H. James Harkins /// dewdrop_world
http://www.duke.edu/~jharkins

"If attacked by a lion, thrust your arm down his throat.
This takes some practice."  -- Cyril Connolly