Created
September 30, 2018 16:25
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from pathlib import Path | |
from typing import List, Callable, Optional, Sequence | |
class Functor(): | |
def __init__(self, start: int) -> None: | |
self.start = int(start) | |
def __call__(self, data: List[int]) -> int: | |
return self.start + len(data) | |
def apply(value: List[int], func : Callable[[List[int]],int]): | |
return func(value) | |
def test_appply(): | |
res = apply([1,2,3,4,5], Functor(1)) | |
assert res == 5 | |
################################################################## | |
def accept_all(_: Path) -> bool: | |
return True | |
class matching_suffix(): | |
def __init__(self, suffixes: Sequence[str]) -> None: | |
self.suffixes = {s.lower() for s in suffixes} | |
def __call__(self, p: Path) -> bool: | |
return p.suffix.lower() in self.suffixes | |
def some_func(supported_file_types: Optional[List[str]]) -> None: | |
if supported_file_types is not None: | |
file_filter = matching_suffix(supported_file_types) | |
else: | |
file_filter = accept_all | |
some_other_func(file_filter) | |
def some_other_func(_predicate: Callable[[Path], bool] = accept_all) -> None: | |
pass |
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