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Access behavior / protocol / macro for custom type

#macros#access
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Access behavior / protocol / macro for custom type

I’m creating a custom type and I need to define original logic for the square bracket operator. How do I go about doing this? Do I use defimpl to define a protocol, or write a macro, or use Access behavior? Or some combination thereof?

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LostKobrakai

LostKobrakai

You should just need to implement the access behaviour: Access — Elixir v1.11.4

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Post #2
LostKobrakai

LostKobrakai

If you look at put_in, update_in or pop_in those brakets could also invoke different callbacks of the behaviour besides fetch/2. As you’ve noticed those brackets are a way for you to supply a key to be used. That key can be any term, but as you’ve seen it needs to be one term not many.

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