Is there any data structure that behaves like both a Set and Map in OOP?

Answers: 1

Kotlin removeAll function with MutableCollection receiver - both in/out modifiers are used

Answers: 1

Regex for password must contain at least eight characters, at least one number and both lower and uppercase letters and special characters

Answers: 45

Is there any pythonic way to combine two dicts (adding values for keys that appear in both)?

Answers: 22