Add __replace__ magic method to BaseContainer for copy.replace() support#2093
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AdrianAcala wants to merge 1 commit intodry-python:masterfrom
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Add __replace__ magic method to BaseContainer for copy.replace() support#2093AdrianAcala wants to merge 1 commit intodry-python:masterfrom
AdrianAcala wants to merge 1 commit intodry-python:masterfrom
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tests/test_primitives/test_container/test_base_container/test_replace.py
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| assert copy.replace(container) is container # type: ignore[attr-defined] | ||
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| new_value = 'new_value' | ||
| new_container = copy.replace(container, _inner_value=new_value) # type: ignore[attr-defined] |
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The problem with copy.replace is that it breaks typing :(
It does not know that copy.replace(Success(1), 'a') will be Result[str, Any] and not Result[int, Any]
We need a typed wrapper around it for our containers. With HKT support.
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@sobolevn , thanks for your review. I'll try to fix things and get back to you.
Edit: sorry. I missed something.
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docs/pages/container.rst
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| >>> from returns.result import Success | ||
| >>> | ||
| >>> value = Success(1) | ||
| >>> # We can use map to effectively replace the inner value |
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Nope, that's not correct :(
This way we can only replace values in "truthy" values. It will not replace a value in Failure(1), for example.
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@sobolevn , sorry about the delay. My family got sick and then I got sick and then work has been busy since I missed some time. I went through this again and resolved what I think is what you want. Please review again please. |
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…) support - Added the __replace__ magic method to BaseContainer, enabling the creation of modified copies of immutable containers in line with Python 3.13's copy.replace() functionality. - Updated documentation to include usage examples and clarify the behavior of the new method. - Added tests to ensure the correct functionality of the __replace__ method and its integration with the copy module. - Updated CHANGELOG to reflect this new feature and its implications for container usage. Closes dry-python#1920.
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@sobolevn , this is ready for your review. Thanks so much! |
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