🔗 Reduce, Reuse… Refactor: clearer Elixir with the Enum module

“When an operation cannot be expressed by any of the functions in the Enum module, developers will most likely resort to reduce/3.”

From the docs for Enum.reduce/3

In many Elixir applications, I find Enum.reduce is used frequently. Enum.reduce can do anything, but that doesn’t mean it should. In many cases, other Enum functions are more readable, practically as fast, and easier to refactor.

I would also like to discuss situations that are a good fit for Enum.reduce and also introduce you to a custom credo check I’ve created, which can help you identify places where Enum.reduce could be replaced with a simpler option.