Source code for returns._generated.pointfree.bind_context_ioresult
def _bind_context_ioresult(function):
"""
Lifts function from ``RequiresContextIOResult`` 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
>>> import anyio
>>> from returns.context import (
... RequiresContextFutureResult,
... RequiresContextIOResult,
... )
>>> from returns.io import IOSuccess, IOFailure
>>> from returns.pointfree import bind_context_ioresult
>>> def function(arg: int) -> RequiresContextIOResult[str, int, str]:
... return RequiresContextIOResult(
... lambda deps: IOSuccess(len(deps) + arg),
... )
>>> assert anyio.run(bind_context_ioresult(function)(
... RequiresContextFutureResult.from_value(2),
... )('abc').awaitable) == IOSuccess(5)
>>> assert anyio.run(bind_context_ioresult(function)(
... RequiresContextFutureResult.from_failure(0),
... )('abc').awaitable) == IOFailure(0)
"""
return lambda container: container.bind_context_ioresult(function)