Reference

Catmandu::Fix::issn(3pm)

normalize the issn value for a given key

NAME

Catmandu::Fix::issn - normalize the issn value for a given key

SYNOPSIS

  # Normalize the ISSN value of issn_field.
  # e.g. issn_field => '1553667x'
  issn(issn_field) # issn_field => '1553-667X'

SEE ALSO

Catmandu::Fix