Reference

Catmandu::Fix::isbn13(3pm)

normalize the isbn value of a key in 13-digit form

NAME

Catmandu::Fix::isbn13 - normalize the isbn value of a key in 13-digit form

SYNOPSIS

  # Normalize the ISBN value of isbn_field.
  # e.g. isbn_field => '1565922573'
  isbn13(isbn_field) # isbn_field => '978-1-56592-257-0'

SEE ALSO

Catmandu::Fix, Catmandu::Fix::isbn10