built-in Types
Table of contents
Mutability of built-in Classes
| Types | collection mutability | elements mutability | ordered | duplicate elements |
|---|---|---|---|---|
| String | × | ○ | ○ | |
| List | ○ | ○ | ○ | ○ |
| Tuple | × | ○ | ○ | ○ |
| Set | ○ | × | × | × |
| Dictionary | ○ | × (key) ○ (value) | (○) | × (key) ○ (value) |
(cf) Hashing (set, key of dict) assumes distinct & immutable elements.
(cf) empty set : set() {}
(cf) empty dictionary : {}