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| author | Jasper Ras <jras@hostnet.nl> | 2024-11-23 11:30:28 +0100 |
|---|---|---|
| committer | Jasper Ras <jras@hostnet.nl> | 2024-11-23 11:30:28 +0100 |
| commit | 1f1423fdb8d4e2928768ffa33a6ad2b59c75e82e (patch) | |
| tree | 67d94f0d821a053aca0e7c8a7ffb6c369047aa14 /Zettelkast/Notes/290220240843 - Value Object.md | |
| parent | 93d36010a9d54bca1fdcaf1f4c99e6981aaf41bc (diff) | |
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| -rw-r--r-- | Zettelkast/Notes/290220240843 - Value Object.md | 15 |
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diff --git a/Zettelkast/Notes/290220240843 - Value Object.md b/Zettelkast/Notes/290220240843 - Value Object.md deleted file mode 100644 index 10a9afa..0000000 --- a/Zettelkast/Notes/290220240843 - Value Object.md +++ /dev/null @@ -1,15 +0,0 @@ -A Value Object is a domain object that has no unique identity but if any of its properties change it is no longer the same. An example can be made with money. - -```py -from dataclasses import dataclass - -@dataclass(frozen=True) -class Money: - type: str - value: int - -Money("Euro", 10) != Money("Euro", 9) -Money("GBP", 10) != Money("Euro", 10) -``` - -Thus such an object is a perfect candidate for immutability. With python we can add @dataclass(frozen=True). Frozen=true makes it immutable.
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