Do you know any resourses that describe the reason why options came to be represented by a keyword list instead of a map?

[c4710n]

Why keyword lists for opts instead of maps?

Elixir had an option to choose either keyword lists and maps for options. The reason why we chose keyword lists are because they preserve user ordering and they allow duplicate keys. We use both features in Elixir itself. For example, in try/catch/after, we warn if you put after before catch, as that would read weird. Using maps would not allow us to warn in those cases, as you always have alphabetical ordering. When you do import Keyword, only: [get: 2, get: 3], those are duplicate keys. Keyw…