ABA.routing_number_valid-question-mark

You're seeing just the function routing_number_valid-question-mark, go back to ABA module for more information.
Link to this function

routing_number_valid?(routing_number)

Validates the routing number. Can be passed any Elixir term.

Examples

iex> ABA.routing_number_valid?("111900659")
true

iex> ABA.routing_number_valid?("111900658")
false