{"id":5734,"date":"2020-07-30T11:32:09","date_gmt":"2020-07-30T02:32:09","guid":{"rendered":"https:\/\/yumishin.com\/?p=5734"},"modified":"2020-07-30T11:40:44","modified_gmt":"2020-07-30T02:40:44","slug":"ruby-dup-clone","status":"publish","type":"post","link":"https:\/\/yumishin.com\/?p=5734","title":{"rendered":"\u3010Ruby\u3011\u300cdup\u300d\u3068\u300cclone\u300d\u306e\u9055\u3044\u3068\u306f\uff1f"},"content":{"rendered":"<p>\u3069\u3046\u3082\u3001Ruby\u3092\u3084\u3063\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3002<\/p>\n<p><span style=\"color: #ff0000;\">\u3055\u3066\u7a81\u7136\u3067\u3059\u304cRuby\u306b\u304a\u3051\u308b\u300cdup\u300d\u3068\u300cclone\u300d\u306e\u9055\u3044\u3063\u3066\u3088\u304f\u308f\u304b\u3089\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f<\/span><\/p>\n<p>\u500b\u4eba\u7684\u306b\u306f\u3001\u3069\u3063\u3061\u306e\u30e1\u30bd\u30c3\u30c9\u3082\u30b3\u30d4\u30fc\u3059\u308b\u3082\u306e\u3060\u3068\u3044\u3046\u306e\u306f\u306a\u3093\u3068\u306a\u304f\u308f\u304b\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\u3001\u9055\u3044\u3092\u3088\u304f\u7406\u89e3\u3057\u3066\u3044\u307e\u305b\u3093\u3067\u3057\u305f\u3002<\/p>\n<p>\u305d\u3053\u3067\u4eca\u56de\u306f\u300cdup\u300d\u3068\u300cclone\u300d\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u7c21\u5358\u306b\u307e\u3068\u3081\u3066\u304a\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h2 id=\"i-0\">\u3010Ruby\u3011\u300cdup\u300d\u3068\u300cclone\u300d\u306e\u9055\u3044\u306b\u3064\u3044\u3066<\/h2>\n<h3 id=\"i-1\">\u9055\u3044\u306f2\u3064\u3060\u3051\uff01<\/h3>\n<p>\u62bc\u3055\u3048\u3066\u304a\u304b\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u9055\u3044\u306f2\u3064\u3060\u3051\u3067\u3059\u3002<\/p>\n<p><span style=\"color: #ff0000;\">\u300cclone\u300d\u306f\u300cfreeze\u306e\u60c5\u5831\u300d\u3068\u300c\u7279\u7570\u30e1\u30bd\u30c3\u30c9\u306e\u60c5\u5831\u300d\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3002\u300cdup\u300d\u306f\u30b3\u30d4\u30fc\u3057\u306a\u3044\u3002<\/span><\/p>\n<p>\u4ee5\u4e0a\u3067\u3059\u3002<\/p>\n<h3 id=\"i-2\">freeze\u306e\u30b3\u30d4\u30fc<\/h3>\n<p>\u4ee5\u4e0b\u306e\u554f\u984c\u3067__(1)__\u306b\u5165\u308c\u308b\u306e\u306f\u300cdup\u300d\u304b\u300cclone\u300d\u306e\u3069\u3061\u3089\u304c\u9069\u5207\u304b\u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<div class=\"pre_tag\"><span><i class=\"fa fa-code\"><\/i> \u30b3\u30fc\u30c9<\/span><\/p>\n<pre><code>old_data = [1,2,3]\nold_data.freeze\n\nnew_data = old_data.__(1)__\nnew_data &lt;&lt; 4\n\np new_data #=&gt;[1,2,3,4]<\/code><\/pre>\n<\/div>\n<div class=\"accordion main_c\"><input type=\"checkbox\" id=\"label98857\" class=\"accordion_input\"><label for=\"label98857\">\u56de\u7b54\u3068\u89e3\u8aac<\/label><\/p>\n<div class=\"accordion_content\"> <span style=\"color: #ff0000;\">\u7b54\u3048\u300cdup\u300d<\/span><\/p>\n<p>\u3053\u306e\u5834\u5408\u3001<code>new_data &lt;&lt; 4<\/code>\u3068\u3044\u3046\u5f62\u3067\u7834\u58ca\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u304a\u308a\u3001\u305d\u308c\u304c<code>p new_data<\/code>\u306b\u53cd\u6620\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308aold_data\u306efreeze\u3092\u30b3\u30d4\u30fc\u3057\u3066\u3044\u306a\u3044\u3053\u3068\u304c\u308f\u304b\u308a\u307e\u3059\u3002\u3067\u3059\u306e\u3067\u300cdup\u300d\u3092\u5165\u308c\u308b\u306e\u304c\u9069\u5207\u3067\u3059\u3002<\/p>\n<p>\u3082\u3057clone\u3092\u5165\u308c\u3066\u3057\u307e\u3046\u3068old_data\u306efreeze\u307e\u3067\u30b3\u30d4\u30fc\u3057\u3066\u3057\u307e\u3044\u3001new_data\u3067&lt;&lt;\u306e\u3088\u3046\u306a\u7834\u58ca\u7684\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u305a\u306b\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\n<\/div>\n<\/div>\n<h3 id=\"i-3\">\u7279\u7570\u30e1\u30bd\u30c3\u30c9\u306e\u30b3\u30d4\u30fc<\/h3>\n<p>\u4ee5\u4e0b\u306e\u554f\u984c\u3067__(1)__\u306b\u5165\u308c\u308b\u306e\u306f\u300cobj.dup\u300d\u304b\u300cobj.clone\u300d\u306e\u3069\u3061\u3089\u304c\u9069\u5207\u304b\u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<div class=\"pre_tag\"><span><i class=\"fa fa-code\"><\/i> \u30b3\u30fc\u30c9<\/span><\/p>\n<pre><code>obj = Object.new\n\ndef obj.hello\n  puts \"Hi!\"\nend\n\ncopy = __(1)__\n\ncopy.hello\u3000#=&gt; Hi!<\/code><\/pre>\n<\/div>\n<div class=\"accordion main_c\"><input type=\"checkbox\" id=\"label90924\" class=\"accordion_input\"><label for=\"label90924\">\u56de\u7b54\u3068\u89e3\u8aac<\/label><\/p>\n<div class=\"accordion_content\"> <span style=\"color: #ff0000;\">\u7b54\u3048 \u300cobj.clone\u300d<\/span><\/p>\n<p>\u307e\u305aobj\u306b\u7279\u7570\u30e1\u30bd\u30c3\u30c9\u3092\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u7279\u7570\u30e1\u30bd\u30c3\u30c9\u3092copy\u304c\u30ec\u30b7\u30fc\u30d0\u306b\u306a\u3063\u305f\u5834\u5408\u3067\u3082\u4f7f\u3048\u308b\u3088\u3046\u306b\u30b3\u30d4\u30fc\u3059\u308b\u65b9\u6cd5\u306f\u3001clone\u3092\u4f7f\u3046\u3053\u3068\u3067\u3059\u3002dup\u3067\u306f\u7279\u7570\u30e1\u30bd\u30c3\u30c9\u307e\u3067\u30b3\u30d4\u30fc\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n<p>\u307e\u305f\u30de\u30fc\u30b7\u30e3\u30ea\u30f3\u30b0\u3067\u3082\u7279\u7570\u30e1\u30bd\u30c3\u30c9\u306f\u30b3\u30d4\u30fc\u3067\u304d\u307e\u305b\u3093\u306e\u3067\u3001\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<\/div>\n<\/div>\n<h4 id=\"i-4\">\u307e\u3068\u3081<\/h4>\n<p>\u3068\u3044\u3046\u308f\u3051\u3067\u7c21\u5358\u306b\u300cdup\u300d\u3068\u300cclone\u300d\u306e\u9055\u3044\u3092\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u305f\u3002\u7d30\u304b\u3044\u9055\u3044\u306f\u3042\u308b\u306e\u3067\u3059\u304c\u3001\u57fa\u672c\u7684\u306b\u306f<span style=\"color: #ff0000;\">\u300cclone\u300d\u306f\u300cfreeze\u306e\u60c5\u5831\u300d\u3068\u300c\u7279\u7570\u30e1\u30bd\u30c3\u30c9\u306e\u60c5\u5831\u300d\u3092\u30b3\u30d4\u30fc\u3059\u308b\u3002\u300cdup\u300d\u306f\u30b3\u30d4\u30fc\u3057\u306a\u3044<\/span>\u3067\u3059\u3002\u3067\u306f\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3069\u3046\u3082\u3001Ruby\u3092\u3084\u3063\u3066\u3044\u308b\u3082\u306e\u3067\u3059\u3002 \u3055\u3066\u7a81\u7136\u3067\u3059\u304cRuby\u306b\u304a\u3051\u308b\u300cdup\u300d\u3068\u300cclone\u300d\u306e\u9055\u3044\u3063\u3066\u3088\u304f\u308f\u304b\u3089\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u304b\uff1f \u500b\u4eba\u7684\u306b\u306f\u3001\u3069\u3063\u3061\u306e\u30e1\u30bd\u30c3\u30c9\u3082\u30b3\u30d4\u30fc\u3059\u308b\u3082\u306e\u3060\u3068\u3044\u3046\u306e\u306f\u306a\u3093\u3068\u306a\u304f\u308f\u304b\u3063\u3066\u3044\u305f\u306e\u3067\u3059 &#8230; <\/p>\n","protected":false},"author":1,"featured_media":5739,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[272],"tags":[],"class_list":{"0":"post-5734","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-programing","8":"entry"},"_links":{"self":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts\/5734","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5734"}],"version-history":[{"count":3,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts\/5734\/revisions"}],"predecessor-version":[{"id":5741,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/posts\/5734\/revisions\/5741"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=\/wp\/v2\/media\/5739"}],"wp:attachment":[{"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5734"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5734"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yumishin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}