Elixir Language Maps and Keyword Lists Difference between Maps and Keyword Lists
Example
Maps and keyword lists have different application. For instance, a map cannot have two keys with the same value and it's not ordered. Conversely, a Keyword list can be a little bit hard to use in pattern matching in some cases.
Here's a few use cases for maps vs keyword lists.
Use keyword lists when:
- you need the elements to be ordered
- you need more than one element with the same key
Use maps when:
- you want to pattern-match against some keys/values
- you don't need more than one element with the same key
- whenever you don't explicitly need a keyword list
