Bottle.List.is_list_with_length
You're seeing just the macro
is_list_with_length
, go back to Bottle.List module for more information.
Guard that passes for a list of a specific length
Examples
iex> is_list_with_length([], 0) true
iex> is_list_with_length([:foo], 1) true
iex> is_list_with_length(%{foo: "bar"}, 1) false
iex> is_list_with_length({"anything", "else"}, 2) false