Credo v1.4.0 Credo.Check.Warning.UnusedTupleOperation 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 Tuple module's functions has to be used.
While this is correct ...
def remove_magic_item!(tuple) do
tuple = Tuple.delete_at(tuple, 0)
if Enum.length(tuple) == 0, do: raise "OMG!!!1"
tuple
end... we forgot to save the result in this example:
def remove_magic_item!(tuple) do
Tuple.delete_at(tuple, 0)
if Enum.length(tuple) == 0, do: raise "OMG!!!1"
tuple
endTuple 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.