Source code for returns._generated.pointfree.bind_context_result
def _bind_context_result(function):
"""
Lifts function from ``RequiresContextResult`` for better composition.
In other words, it modifies the function's
signature from: ``a -> RequiresContextResult[env, b, c]`` to:
``Container[env, a, c]`` -> ``Container[env, b, c]``
.. code:: python
>>> from returns.context import (
... RequiresContextResult,
... RequiresContextIOResult,
... )
>>> from returns.io import IOSuccess, IOFailure
>>> from returns.result import Success
>>> from returns.pointfree import bind_context_result
>>> def function(arg: int) -> RequiresContextResult[str, int, str]:
... return RequiresContextResult(
... lambda deps: Success(len(deps) + arg),
... )
>>> assert bind_context_result(function)(
... RequiresContextIOResult.from_value(2),
... )('abc') == IOSuccess(5)
>>> assert bind_context_result(function)(
... RequiresContextIOResult.from_failure(0),
... )('abc') == IOFailure(0)
"""
return lambda container: container.bind_context_result(function)