移植 Python 项目到 typescript,如何处理 Python attrs 库呢 - V2EX
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AkideLiu

移植 Python 项目到 typescript,如何处理 Python attrs 库呢

  •  
  •   AkideLiu Dec 5, 2021 2820 views
    This topic created in 1619 days ago, the information mentioned may be changed or developed.

    各位彦祖好,最近在把一个 python 写的项目改写成 typescript

    发现原始 python 代码里面使用了大量的 attr.ib(),在 attr.ib()里面有很多的参数比如 cmp ,factory ,converter ,validator 等等。

    初步想法是用 ts class 的 constructor 来实现类似的功能,但是这样的话上面提到的细节参数都需要有单独的验证和处理,请问有什么适用于 typescript 类似于 attr 的库方便实现这样的功能吗?

    attrs 的官方文档 : https://www.attrs.org/en/stable/

    看完官方文档和例子感觉有点像 java 的 lombok

    一段例子如下:

    https://github.com/cs50/compare50/blob/main/compare50/_data.py#L114-L149

    @attr.s(slots=True, frozen=True) class Submission: """ :ivar path: the file path of the submission :ivar files: list of :class:`compare50.File` objects contained in the submission :ivar preprocessor: A function from tokens to tokens that will be run on \ each file in the submission :ivar id: integer that uniquely identifies this submission \ (submissions with the same path will always have the same id). Represents a single submission. Submissions may either be single files or directories containing many files. """ _store = IdStore(key=lambda sub: (sub.path, sub.files, sub.large_files, sub.undecodable_files)) path = attr.ib(cOnverter=pathlib.Path, cmp=False) files = attr.ib(cmp=False) large_files = attr.ib(factory=tuple, cOnverter=_to_path_tuple, cmp=False, repr=False) undecodable_files = attr.ib(factory=tuple, cOnverter=_to_path_tuple, cmp=False, repr=False) preprocessor = attr.ib(default=lambda tokens: tokens, cmp=False, repr=False) is_archive = attr.ib(default=False, cmp=False) id = attr.ib(init=False) def __attrs_post_init__(self): object.__setattr__(self, "files", tuple( [File(pathlib.Path(path), self) for path in self.files])) object.__setattr__(self, "id", Submission._store[self]) def __iter__(self): return iter(self.files) @classmethod def get(cls, id): """Retrieve submission corresponding to specified id""" return cls._store.objects[id] 
    3 replies    2021-12-05 17:09:07 +08:00
    Opportunity
        1
    Opportunity  
       Dec 5, 2021
    gouflv
        2
    gouflv  
       Dec 5, 2021 via iPhone
    class-transformer + class-validator
    pengtdyd
        3
    pengtdyd  
       Dec 5, 2021
    改啥改,又不是不能用
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