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Direktori : /lib/python3/dist-packages/black/ |
Current File : //lib/python3/dist-packages/black/rusty.py |
"""An error-handling model influenced by that used by the Rust programming language See https://doc.rust-lang.org/book/ch09-00-error-handling.html. """ from typing import Generic, TypeVar, Union T = TypeVar("T") E = TypeVar("E", bound=Exception) class Ok(Generic[T]): def __init__(self, value: T) -> None: self._value = value def ok(self) -> T: return self._value class Err(Generic[E]): def __init__(self, e: E) -> None: self._e = e def err(self) -> E: return self._e Result = Union[Ok[T], Err[E]]