NAME

Catmandu::Fix::external_id - transform external_id array into a hash

SYNOPSIS

    # Transform an array of external_ids into a uniq list of hashes
    # external_id:
    #    - type: opac
    #      value: 12345
    #    - type: opac
    #      value: 6789   (copy)
    #    - type: arxiv
    #      value: 0001

    external_id()

    # external_id:
    #      opac: 12345
    #      arxiv: 0001