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Business::ISSN - where is is_valid_checksum

by CaMelRyder (Pilgrim)
on Aug 04, 2008 at 15:31 UTC ( [id://702089]=perlquestion: print w/replies, xml ) Need Help??

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  1. or download this
            #EXPORTABLE FUNCTIONS
    
    ...
    
             #verify the checksum
             if( is_valid_checksum(01234567) ) { ... }
    
  2. or download this
    use Business::ISSN qw(is_valid_checksum);
    
    my $issn = '0742-4477';
    print "Valid = " . is_valid_checksum($issn);
    
  3. or download this
    "is_valid_checksum" is not exported by the Business::ISSN module
    Can't continue after import errors at test.pl line 1
    BEGIN failed--compilation aborted at test.pl line 1.
    

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