Changed structure of cpl-query
This commit is contained in:
@@ -1,8 +1,13 @@
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from typing import Callable, Optional, Union
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from cpl_query._helper import is_number
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from cpl_query.exceptions import ArgumentNoneException, ExceptionArgument, InvalidTypeException, IndexOutOfRangeException
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from cpl_query.iterable.iterable_abc import IterableABC
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from cpl_query.iterable.ordered_iterable_abc import OrderedIterableABC
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from cpl_query.query import Query
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def _default_lambda(x: object):
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return x
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class Iterable(IterableABC):
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@@ -10,97 +15,329 @@ class Iterable(IterableABC):
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def __init__(self, t: type = None, values: list = None):
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IterableABC.__init__(self, t, values)
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def any(self, func: Callable) -> bool:
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return Query.any(self, func)
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def all(self, _func: Callable = None) -> bool:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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def all(self, func: Callable) -> bool:
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return Query.all(self, func)
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if _func is None:
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_func = _default_lambda
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def average(self, func: Callable = None) -> Union[int, float, complex]:
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return Query.avg(self, func)
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result = self.where(_func)
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return len(result) == len(self)
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def contains(self, value: object) -> bool:
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return Query.contains(self, value)
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def any(self, _func: Callable = None) -> bool:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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def count(self, func: Callable = None) -> int:
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return Query.count(self, func)
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if _func is None:
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_func = _default_lambda
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def distinct(self, func: Callable = None) -> IterableABC:
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return self.__to_self(Query.distinct(self, func))
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result = self.where(_func)
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return len(result) > 0
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def element_at(self, index: int) -> any:
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return Query.element_at(self, index)
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def average(self, _func: Callable = None) -> Union[int, float, complex]:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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def element_at_or_default(self, index: int) -> Optional[any]:
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return Query.element_at_or_default(self, index)
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if _func is None and not is_number(self.type):
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raise InvalidTypeException()
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def last(self) -> any:
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return Query.last(self)
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if _func is None:
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_func = _default_lambda
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def last_or_default(self) -> Optional[any]:
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return Query.last_or_default(self)
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return float(self.sum(_func)) / float(self.count())
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def first(self) -> any:
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return Query.first(self)
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def contains(self, _value: object) -> bool:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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def first_or_default(self) -> Optional[any]:
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return Query.first_or_default(self)
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if _value is None:
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raise ArgumentNoneException(ExceptionArgument.value)
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def for_each(self, func: Callable):
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Query.for_each(self, func)
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return _value in self
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def max(self, func: Callable = None) -> Union[int, float, complex]:
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return Query.max(self, func)
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def count(self, _func: Callable = None) -> int:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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def min(self, func: Callable = None) -> Union[int, float, complex]:
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return Query.min(self, func)
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if _func is None:
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return len(self)
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return len(self.where(_func))
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def distinct(self, _func: Callable = None) -> IterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None:
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_func = _default_lambda
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result = Iterable()
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known_values = []
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for element in self:
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value = _func(element)
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if value in known_values:
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continue
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known_values.append(value)
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result.append(element)
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return result
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def element_at(self, _index: int) -> any:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _index is None:
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raise ArgumentNoneException(ExceptionArgument.index)
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return self[_index]
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def element_at_or_default(self, _index: int) -> any:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _index is None:
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raise ArgumentNoneException(ExceptionArgument.index)
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try:
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return self[_index]
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except IndexError:
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return None
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def first(self: IterableABC) -> any:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if len(self) == 0:
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raise IndexOutOfRangeException()
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return self[0]
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def first_or_default(self: IterableABC) -> Optional[any]:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if len(self) == 0:
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return None
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return self[0]
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def last(self: IterableABC) -> any:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if len(self) == 0:
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raise IndexOutOfRangeException()
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return self[len(self) - 1]
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def last_or_default(self: IterableABC) -> Optional[any]:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if len(self) == 0:
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return None
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return self[len(self) - 1]
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def for_each(self, _func: Callable = None):
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None:
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_func = _default_lambda
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for element in self:
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_func(element)
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def max(self, _func: Callable = None) -> Union[int, float, complex]:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None and not is_number(self.type):
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raise InvalidTypeException()
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if _func is None:
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_func = _default_lambda
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return _func(max(self, key=_func))
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def median(self, _func=None) -> Union[int, float]:
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if _func is None:
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_func = _default_lambda
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result = self.order_by(_func).select(_func).to_list()
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length = len(result)
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i = int(length / 2)
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return (
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result[i]
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if length % 2 == 1
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else (float(result[i - 1]) + float(result[i])) / float(2)
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)
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def min(self, _func: Callable = None) -> Union[int, float, complex]:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None and not is_number(self.type):
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raise InvalidTypeException()
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if _func is None:
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_func = _default_lambda
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return _func(min(self, key=_func))
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def order_by(self, _func: Callable = None) -> OrderedIterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None:
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_func = _default_lambda
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def order_by(self, func: Callable) -> OrderedIterableABC:
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res = Query.order_by(self, func)
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from cpl_query.iterable.ordered_iterable import OrderedIterable
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res.__class__ = OrderedIterable
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return res
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return OrderedIterable(self.type, _func, sorted(self, key=_func))
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def order_by_descending(self, _func: Callable = None) -> OrderedIterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None:
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_func = _default_lambda
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def order_by_descending(self, func: Callable) -> OrderedIterableABC:
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res = Query.order_by_descending(self, func)
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from cpl_query.iterable.ordered_iterable import OrderedIterable
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res.__class__ = OrderedIterable
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return res
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return OrderedIterable(self.type, _func, sorted(self, key=_func, reverse=True))
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def reverse(self) -> IterableABC:
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return Query.reverse(self)
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def reverse(self: IterableABC) -> IterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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def single(self) -> any:
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return Query.single(self)
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return Iterable().extend(reversed(self.to_list()))
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def single_or_default(self) -> Optional[any]:
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return Query.single_or_default(self)
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def select(self, _func: Callable = None) -> IterableABC:
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if _func is None:
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_func = _default_lambda
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def select(self, _f: Callable) -> IterableABC:
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return self.__to_self(Query.select(self, _f))
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result = Iterable()
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result.extend(_func(_o) for _o in self)
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return result
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def select_many(self, _f: Callable) -> IterableABC:
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return self.__to_self(Query.select_many(self, _f))
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def select_many(self, _func: Callable = None) -> IterableABC:
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if _func is None:
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_func = _default_lambda
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def skip(self, index: int) -> IterableABC:
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return self.__to_self(Query.skip(self, index))
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result = Iterable()
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# The line below is pain. I don't understand anything of it...
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# written on 09.11.2022 by Sven Heidemann
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elements = [_a for _o in self for _a in _func(_o)]
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def skip_last(self, index: int) -> IterableABC:
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return self.__to_self(Query.skip_last(self, index))
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result.extend(elements)
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return result
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def sum(self, func: Callable = None) -> Union[int, float, complex]:
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return Query.sum(self, func)
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def single(self: IterableABC) -> any:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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def take(self, index: int) -> IterableABC:
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return self.__to_self(Query.take(self, index))
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if len(self) > 1:
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raise Exception('Found more than one element')
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elif len(self) == 0:
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raise Exception('Found no element')
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def take_last(self, index: int) -> IterableABC:
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return self.__to_self(Query.take_last(self, index))
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return self[0]
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def where(self, func: Callable) -> IterableABC:
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return self.__to_self(Query.where(self, func))
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def single_or_default(self: IterableABC) -> Optional[any]:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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@staticmethod
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def __to_self(obj: IterableABC) -> IterableABC:
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obj.__class__ = Iterable
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return obj
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if len(self) > 1:
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raise Exception('Index out of range')
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elif len(self) == 0:
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return None
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return self[0]
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def skip(self, _index: int) -> IterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _index is None:
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raise ArgumentNoneException(ExceptionArgument.index)
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if _index >= len(self):
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raise IndexOutOfRangeException()
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return Iterable(self.type, values=self[_index:])
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def skip_last(self, _index: int) -> IterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _index is None:
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raise ArgumentNoneException(ExceptionArgument.index)
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index = len(self) - _index
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if index >= len(self) or index < 0:
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raise IndexOutOfRangeException()
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result = Iterable()
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result.extend(self[:index])
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return result
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def take(self, _index: int) -> IterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _index is None:
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raise ArgumentNoneException(ExceptionArgument.index)
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if _index >= len(self):
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raise IndexOutOfRangeException()
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result = Iterable()
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result.extend(self[:_index])
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return result
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def take_last(self, _index: int) -> IterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _index is None:
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raise ArgumentNoneException(ExceptionArgument.index)
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index = len(self) - _index
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if index >= len(self) or index < 0:
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raise IndexOutOfRangeException()
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result = Iterable()
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result.extend(self[index:])
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return result
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def sum(self, _func: Callable = None) -> Union[int, float, complex]:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None and not is_number(self.type):
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raise InvalidTypeException()
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if _func is None:
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_func = _default_lambda
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return sum([_func(x) for x in self])
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def where(self, _func: Callable = None) -> IterableABC:
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if self is None:
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raise ArgumentNoneException(ExceptionArgument.list)
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if _func is None:
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raise ArgumentNoneException(ExceptionArgument.func)
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if _func is None:
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_func = _default_lambda
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result = Iterable(self.type)
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for element in self:
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if _func(element):
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result.append(element)
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return result
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@@ -1,33 +1,38 @@
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from abc import ABC, abstractmethod
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from typing import Optional, Callable, Union, Iterable
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from abc import abstractmethod
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from typing import Iterable
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from cpl_query.base.queryable_abc import QueryableABC
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from cpl_query.enumerable.enumerable_abc import EnumerableABC
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from cpl_query.base.sequence_abc import SequenceABC
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from cpl_query.base.sequence_values import SequenceValues
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class IterableABC(QueryableABC, list):
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class IterableABC(SequenceABC, QueryableABC):
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r"""ABC to define functions on list
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"""
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@abstractmethod
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def __init__(self, t: type = None, values: list = None):
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list.__init__(self)
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SequenceABC.__init__(self, t, values)
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if t == any:
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t = None
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self._type = t
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def __getitem__(self, n) -> object:
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r"""Gets item in enumerable at specified zero-based index
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if values is not None:
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for value in values:
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self.append(value)
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Parameter
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--------
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n: the index of the item to get
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@property
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def type(self) -> type:
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return self._type
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Returns
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-------
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The element at the specified index.
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Raises
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------
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IndexError if n > number of elements in the iterable
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"""
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return list.__getitem__(self.to_list(), n)
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def append(self, __object: object) -> None:
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r"""Adds element to list
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Parameter
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---------
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__object: :class:`object`
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@@ -39,11 +44,10 @@ class IterableABC(QueryableABC, list):
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if len(self) == 0 and self._type is None:
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self._type = type(__object)
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super().append(__object)
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self._values = SequenceValues([*self._values, __object], self._type)
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def extend(self, __iterable: Iterable) -> 'IterableABC':
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r"""Adds elements of given list to list
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Parameter
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---------
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__iterable: :class: `cpl_query.extension.iterable.Iterable`
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@@ -53,12 +57,3 @@ class IterableABC(QueryableABC, list):
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self.append(value)
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return self
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def to_list(self) -> list:
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r"""Converts :class: `cpl_query.enumerable.enumerable_abc.EnumerableABC` to :class: `list`
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Returns
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-------
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:class: `list`
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"""
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return list(self)
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@@ -1,22 +1,35 @@
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from collections.abc import Callable
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from cpl_query.exceptions import ArgumentNoneException, ExceptionArgument
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from cpl_query.iterable.iterable import Iterable
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from cpl_query.iterable.ordered_iterable_abc import OrderedIterableABC
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from cpl_query.query import Query
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class OrderedIterable(Iterable, OrderedIterableABC):
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r"""Implementation of :class: `cpl_query.extension.Iterable` `cpl_query.extension.OrderedIterableABC`
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"""
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def __init__(self, _t: type = None):
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def __init__(self, _t: type, _func: Callable = None, _values: Iterable = None):
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Iterable.__init__(self, _t)
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OrderedIterableABC.__init__(self, _t)
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OrderedIterableABC.__init__(self, _t, _func, _values)
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def then_by(self, _func: Callable) -> OrderedIterableABC:
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self._funcs.append(_func)
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return Query.then_by(self, lambda *args: [f(*args) for f in self._funcs])
|
||||
def then_by(self: OrderedIterableABC, _func: Callable) -> OrderedIterableABC:
|
||||
if self is None:
|
||||
raise ArgumentNoneException(ExceptionArgument.list)
|
||||
|
||||
if _func is None:
|
||||
raise ArgumentNoneException(ExceptionArgument.func)
|
||||
|
||||
def then_by_descending(self, _func: Callable) -> OrderedIterableABC:
|
||||
self._funcs.append(_func)
|
||||
return Query.then_by_descending(self, lambda *args: [f(*args) for f in self._funcs])
|
||||
|
||||
return OrderedIterable(self.type, _func, sorted(self, key=lambda *args: [f(*args) for f in self._funcs]))
|
||||
|
||||
def then_by_descending(self: OrderedIterableABC, _func: Callable) -> OrderedIterableABC:
|
||||
if self is None:
|
||||
raise ArgumentNoneException(ExceptionArgument.list)
|
||||
|
||||
if _func is None:
|
||||
raise ArgumentNoneException(ExceptionArgument.func)
|
||||
|
||||
self._funcs.append(_func)
|
||||
return OrderedIterable(self.type, _func, sorted(self, key=lambda *args: [f(*args) for f in self._funcs], reverse=True))
|
||||
|
||||
@@ -1,5 +1,6 @@
|
||||
from abc import abstractmethod
|
||||
from collections.abc import Callable
|
||||
from typing import Iterable
|
||||
|
||||
from cpl_query.iterable.iterable_abc import IterableABC
|
||||
|
||||
@@ -7,8 +8,8 @@ from cpl_query.iterable.iterable_abc import IterableABC
|
||||
class OrderedIterableABC(IterableABC):
|
||||
|
||||
@abstractmethod
|
||||
def __init__(self, _t: type, _func: Callable = None):
|
||||
IterableABC.__init__(self, _t)
|
||||
def __init__(self, _t: type, _func: Callable = None, _values: Iterable = None):
|
||||
IterableABC.__init__(self, _t, _values)
|
||||
self._funcs: list[Callable] = []
|
||||
if _func is not None:
|
||||
self._funcs.append(_func)
|
||||
@@ -23,7 +24,7 @@ class OrderedIterableABC(IterableABC):
|
||||
|
||||
Returns
|
||||
-------
|
||||
list of :class:`cpl_query.extension.OrderedIterableABC`
|
||||
list of :class:`cpl_query.iterable.ordered_iterable_abc.OrderedIterableABC`
|
||||
"""
|
||||
pass
|
||||
|
||||
@@ -37,6 +38,6 @@ class OrderedIterableABC(IterableABC):
|
||||
|
||||
Returns
|
||||
-------
|
||||
list of :class:`cpl_query.extension.OrderedIterableABC`
|
||||
list of :class:`cpl_query.iterable.ordered_iterable_abc.OrderedIterableABC`
|
||||
"""
|
||||
pass
|
||||
|
||||
Reference in New Issue
Block a user