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