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firestar5683
26 lines
581 B
Python
26 lines
581 B
Python
from typing import Callable, Optional, TypeVar
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from reactivex import Observable, compose
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from reactivex import operators as ops
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from reactivex import typing
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from reactivex.internal.basic import default_comparer
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_T = TypeVar("_T")
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def contains_(
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value: _T, comparer: Optional[typing.Comparer[_T]] = None
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) -> Callable[[Observable[_T]], Observable[bool]]:
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comparer_ = comparer or default_comparer
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def predicate(v: _T) -> bool:
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return comparer_(v, value)
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return compose(
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ops.filter(predicate),
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ops.some(),
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)
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__all__ = ["contains_"]
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