ImmutableList¶
from pymonet.immutable_list import ImmutableList
from pymonet.utils import increase
lst = ImmutableList.of(1, 2, 3)
lst.map(increase) # ImmutableList.of(2, 3, 4)
lst.filter(lambda item: item % 2 == 0) # ImmutableList.of(2)
lst.find(lambda item: item % 2 == 0) # 2
lst.map(increase) # ImmutableList.of(2, 3, 4)
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class
pymonet.immutable_list.ImmutableList(head: T = None, tail: Optional[pymonet.immutable_list.ImmutableList[~ T][T]] = None, is_empty: bool = False)¶ Immutable list is data structure that doesn’t allow to mutate instances
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__add__(other: pymonet.immutable_list.ImmutableList[~ T][T]) → pymonet.immutable_list.ImmutableList[~T][T]¶ If Maybe is empty return new empty Maybe, in other case takes mapper function and returns result of mapper.
- Parameters
mapper (Function(A) -> Maybe[B]) – function to call with Maybe.value
- Returns
Maybe[B | None]
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append(new_element: T) → pymonet.immutable_list.ImmutableList[~T][T]¶ Returns new ImmutableList with elements from previous one and argument value on the end of list
- Parameters
new_element – element to append on the end of list
- Returns
ImmutableList[A]
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filter(fn: Callable[[Optional[T]], bool]) → pymonet.immutable_list.ImmutableList[~T][T]¶ Returns new ImmutableList with only this elements that passed info argument returns True
- Parameters
fn (Function(A) -> bool) – function to call with ImmutableList value
- Returns
ImmutableList[A]
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find(fn: Callable[[Optional[T]], bool]) → Optional[T]¶ Returns first element of ImmutableList that passed info argument returns True
- Parameters
fn (Function(A) -> bool) – function to call with ImmutableList value
- Returns
A
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map(fn: Callable[[Optional[T]], U]) → pymonet.immutable_list.ImmutableList[~U][U]¶ Returns new ImmutableList with each element mapped into result of argument called with each element of ImmutableList
- Parameters
fn (Function(A) -> B) – function to call with ImmutableList value
- Returns
ImmutableList[B]
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reduce(fn: Callable[[U, T], U], acc: U) → U¶ Method executes a reducer function on each element of the array, resulting in a single output value.
- Parameters
fn (Function(A, B) -> A) – function to call with ImmutableList value
- Returns
A
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unshift(new_element: T) → pymonet.immutable_list.ImmutableList[~T][T]¶ Returns new ImmutableList with argument value on the begin of list and other list elements after it
- Parameters
new_element – element to append on the begin of list
- Returns
ImmutableList[A]
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