| Name | maybedata JSON |
| Version |
0.8
JSON |
| download |
| home_page | None |
| Summary | A Python implementation of a Maybe type that represents potentially missing values |
| upload_time | 2022-12-11 16:43:52 |
| maintainer | None |
| docs_url | None |
| author | None |
| requires_python | >=3.10 |
| license | None |
| keywords |
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| VCS |
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| bugtrack_url |
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| requirements |
No requirements were recorded.
|
| Travis-CI |
No Travis.
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No coveralls.
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# maybedata
This is a package that implements a Maybe data type in Python that represents values that might or might not exist.
It is implemented as a class hierarchy with an abstract base class `Maybe`. This class is not constructible, but can be called to construct members of its subclasses, `Just` and `Nothing`.
All methods are documented, feel free to call `help()` on the classes!
Call `Maybe(value)` or `Just(value)` to create a value that is present.
Call `Maybe()` or `Nothing()` to create a missing value.
Check `maybe.present` to find out if a value is present.
Access `maybe.value` to get the value if it is present.
Call `maybe.assume_present()` to raise an exception if the value is not present.
Call `maybe.get(default)` to get the value or a default value.
`Maybe` and `Just` are generic classes if you use type hinting.
`Just` and `Nothing` support pattern matching.
`Maybe`, `Just`, and `Nothing` support `len()`, `bool()`, `hash()`, `iter()`, `in`, and `==`.
The method `maybe.alternatively()` can be expressed using `|`.
The method `maybe.then()` can be expressed using `>>`.
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