Also instead of this, this is faster:
if function_exported?(Confy.Parsers, parser, 1) do
iex(2)> h function_exported?
def function_exported?(module, function, arity)
@spec function_exported?(module(), atom(), arity()) :: boolean()
Returns true if module is loaded and contains a public function with the given
arity, otherwise false.
Note that this function does not load the module in case it is not loaded.
Check Code.ensure_loaded/1 for more information.
Inlined by the compiler.
## Examples
iex> function_exported?(Enum, :member?, 2)
true
