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Fix "done" method of generators. #724

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Fix "done" method of generators. #724

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6 changes: 4 additions & 2 deletions stdlib/internal/types/generator.codon
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Original file line number Diff line number Diff line change
Expand Up @@ -7,8 +7,10 @@ class Generator:
pass

def done(self) -> bool:
self.__resume__()
return self.__done__()
is_done = self.__done__()
if not is_done:
self.__resume__()
return is_done

def next(self: Generator[T]) -> T:
if isinstance(T, None):
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