contains

contains(element, key=lambda x: x)

Determines if the given element is found in the Enumerable. Uses a lambda function as a key selector for membership comparison with the element. This is an executing function.

Parameters

element : the object to test for membership in the collection. key : lambda function used as a selector for testing the element for membership in the Enumerable collection.

Returns

Boolean result if at least 1 element matches the given element based on the key.

Example

from py_linq import Enumerable

Enumerable([
    {'value': 1},
    {'value': 2},
    {'value': 3}
]).contains({'value' : 2}, lambda x: x['value'])
# True

Enumerable([
    {'value': 1},
    {'value': 2},
    {'value': 3}
]).contains({'value' : 0}, lambda x: x['value'])
# False