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iterable[T] (#17196)

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* fix failing test toSeq in manual which now works
* changelog
* reject proc fn(a: iterable)
* add iterable to spec
* remove MCS/UFCS limitation that now works
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Timothee Cour 2021-04-11 07:25:41 -05:00 • committed by GitHub
commit ceadf54d76
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18 changed files with 254 additions and 40 deletions
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compiler/typeallowed.nim
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@ -97,6 +97,9 @@ proc typeAllowedAux(marker: var IntSet, typ: PType, kind: TSymKind,
result = nil
of tyUntyped, tyTyped:
if kind notin {skParam, skResult} or taNoUntyped in flags: result = t
of tyIterable:
if kind notin {skParam} or taNoUntyped in flags: result = t
# tyIterable is only for templates and macros.
of tyStatic:
if kind notin {skParam}: result = t
of tyVoid: