SoftBank.Note.Currency.exists-question-mark

You're seeing just the function exists-question-mark, go back to SoftBank.Note.Currency module for more information.

Specs

exists?(SoftBank.Note.t() | String.t() | atom()) :: boolean()

Returns true if a currency is defined

Example:

iex> SoftBank.Note.Currency.exists?(:USD)
true
iex> SoftBank.Note.Currency.exists?("USD")
true
iex> SoftBank.Note.Currency.exists?(:WRONG)
false