OeditusCredo.Check.Refactoring.PreferForComprehensionOverFilterMap (OeditusCredo v0.11.1)

Basics

This check has a base priority of normal and works with any version of Elixir.

Explanation

Piping Enum.filter into Enum.map (or vice-versa) iterates over the list twice and allocates intermediate lists.

Bad:

list |> Enum.filter(&valid?/1) |> Enum.map(&transform/1)

Good:

for item <- list, valid?(item), do: transform(item)

Check-Specific Parameters

Use the following parameters to configure this check:

:exclude_test_files

Set to true to skip test files (default: false)

This parameter defaults to nil.

General Parameters

Like with all checks, general params can be applied.

Parameters can be configured via the .credo.exs config file.