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Anyone using this and anyone using this with an Elixir background? I am curious if programming/language patterns like this, shared across languages, can help te

by dpflan 3y ago

Anyone using this and anyone using this with an Elixir background? I am curious if programming/language patterns like this, shared across languages, can help teams that have multi-language (eco)systems (e.g. ruby and elixir).

ezekg 3y ago
I don't have an Elixir background (though I envy Elixir in many ways), but I absolutely utilize pattern matching in my Ruby code bases: - https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b263862c9a77296780c45c91c7e90f/lib/typed_params/formatters/jsonapi.rb#L72-L90 https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b26... - https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b263862c9a77296780c45c91c7e90f/lib/typed_params/controller.rb#L116-L123 https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b26... - https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c770cf0e4b8e9fb1be63993a3b/app/migrations/adjust_validity_for_validation_codes_migration.rb https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c... - https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c770cf0e4b8e9fb1be63993a3b/app/policies/release_policy.rb#L10-L26 https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c... - https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b263862c9a77296780c45c91c7e90f/spec/typed_params/parameterizer_spec.rb#L6-L32 https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b26... I love it. I want even more pattern matching too, like defp: https://bugs.ruby-lang.org/issues/19764 https://bugs.ruby-lang.org/issues/19764 (with original credit to https://zverok.space/blog/2023-05-05-ruby-types.html https://zverok.space/blog/2023-05-05-ruby-types.html).
thibaut_barrere 3y ago
I use both and I believe pattern matching helps a lot to be more defensive in the programs (verify pre-conditions) and raise accordingly, with a low effort in code.
hosh 3y ago
I wrote Ruby for 10 years and Elixir for about 4. The Ruby version is a bit awkward because it has to make compromises with existing syntax … however, I have already been able to make use of it. My Ruby code these days have gotten a lot more functional, and the type of code I write these days (devops tooling, not Rails code) involves complex transformation or parsing, which makes this useful. I have not tried this with flow control (with :ok and :error tuples) … but I can tell you the missing half missing from this picture are function clauses. (How that would work with being able to redefine functions, I have no idea; just saying though ….) Pattern matching comes all the way from logic programming (Prolog). It should not be surprising that this really shines when working with complex logic.

by dpflan 3y ago

ezekg 3y ago

I don't have an Elixir background (though I envy Elixir in many ways), but I absolutely utilize pattern matching in my Ruby code bases: - https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b263862c9a77296780c45c91c7e90f/lib/typed_params/formatters/jsonapi.rb#L72-L90 https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b26... - https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b263862c9a77296780c45c91c7e90f/lib/typed_params/controller.rb#L116-L123 https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b26... - https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c770cf0e4b8e9fb1be63993a3b/app/migrations/adjust_validity_for_validation_codes_migration.rb https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c... - https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c770cf0e4b8e9fb1be63993a3b/app/policies/release_policy.rb#L10-L26 https://github.com/keygen-sh/keygen-api/blob/36cd61db143cc1c... - https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b263862c9a77296780c45c91c7e90f/spec/typed_params/parameterizer_spec.rb#L6-L32 https://github.com/keygen-sh/typed_params/blob/4e4982b7d2b26... I love it. I want even more pattern matching too, like defp: https://bugs.ruby-lang.org/issues/19764 https://bugs.ruby-lang.org/issues/19764 (with original credit to https://zverok.space/blog/2023-05-05-ruby-types.html https://zverok.space/blog/2023-05-05-ruby-types.html).

thibaut_barrere 3y ago

I use both and I believe pattern matching helps a lot to be more defensive in the programs (verify pre-conditions) and raise accordingly, with a low effort in code.

hosh 3y ago

I wrote Ruby for 10 years and Elixir for about 4. The Ruby version is a bit awkward because it has to make compromises with existing syntax … however, I have already been able to make use of it. My Ruby code these days have gotten a lot more functional, and the type of code I write these days (devops tooling, not Rails code) involves complex transformation or parsing, which makes this useful. I have not tried this with flow control (with :ok and :error tuples) … but I can tell you the missing half missing from this picture are function clauses. (How that would work with being able to redefine functions, I have no idea; just saying though ….) Pattern matching comes all the way from logic programming (Prolog). It should not be surprising that this really shines when working with complex logic.