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from typing import Callable, Optional, TypeVar
from reactivex import Observable, abc
from reactivex.internal import noop
_T = TypeVar("_T")
def ignore_elements_() -> Callable[[Observable[_T]], Observable[_T]]:
"""Ignores all elements in an observable sequence leaving only the
termination messages.
Returns:
An empty observable {Observable} sequence that signals
termination, successful or exceptional, of the source sequence.
"""
def ignore_elements(source: Observable[_T]) -> Observable[_T]:
def subscribe(
observer: abc.ObserverBase[_T],
scheduler: Optional[abc.SchedulerBase] = None,
) -> abc.DisposableBase:
return source.subscribe(
noop, observer.on_error, observer.on_completed, scheduler=scheduler
)
return Observable(subscribe)
return ignore_elements
__all__ = ["ignore_elements_"]
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