core.utils

Module Contents

Functions

pipe	Allows to compose a value and up to multiple functions that use this value.

Data

_InstanceType
_PipelineStepType
_ReturnType

API

core.utils._InstanceType = None

core.utils._PipelineStepType = None

core.utils._ReturnType = None

core.utils.pipe(instance: core.utils._InstanceType, *functions: core.utils._PipelineStepType) → core.utils._ReturnType

Allows to compose a value and up to multiple functions that use this value.

All starts with the value itself. Each next function uses the previous result as an input parameter.

Currently, pipe has a hard limit of 21 steps. Because, it is not possible to type it otherwise. We need a hard limit. See: dry-python/returns#461

Here’s how it should be used:

>>> # => executes: str(float(int('1')))
>>> assert pipe('1', int, float, str) == '1.0'

See also:

• https://stackoverflow.com/a/41585450/4842742

• gcanti/fp-ts

Note:

Vendored from:

dry-python/returns

Edits:

• Reduced irrelevant info in the docstring content to avoid confusion.

• Renamed “flow” to “pipe”.