Credo v1.4.0 Credo.Check.Warning.UnusedListOperation View Source
This check has a base priority of high and works with any version of Elixir.
Explanation
The result of a call to the List module's functions has to be used.
While this is correct ...
def sort_usernames(usernames) do
usernames = List.flatten(usernames)
List.sort(usernames)
end... we forgot to save the result in this example:
def sort_usernames(usernames) do
List.flatten(usernames)
List.sort(usernames)
endList operations never work on the variable you pass in, but return a new variable which has to be used somehow.
Configuration parameters
There are no parameters for this check.