Add isbn to your list of dependencies in mix.exs:
def deps do
[{:isbn, "~> 0.1.0"}]
endISBN.valid?/1 checks if the given string is a valid ISBN.
ISBN.valid?("0-306-40615-2")
#=> true
ISBN.valid?("1234567")
#=> falseAn Elixir package to check valid ISBNs
Add isbn to your list of dependencies in mix.exs:
def deps do
[{:isbn, "~> 0.1.0"}]
endISBN.valid?/1 checks if the given string is a valid ISBN.
ISBN.valid?("0-306-40615-2")
#=> true
ISBN.valid?("1234567")
#=> false