{"name":"gist: 904685","desc":"ISBN13をISBN10に変換する","actor":"mohayonao","url":"https://gist.github.com/904685","snippet":"var isbn10 = function(isbn) {\n    if (isbn && isbn.length == 13) {\n        var c = 0;","actor_gravatar":"2e458c4aee2c4352021a2b1f0c6863c5","action":"create"}