{"id":737,"date":"2015-09-18T22:09:03","date_gmt":"2015-09-18T13:09:03","guid":{"rendered":"http:\/\/frsw.net\/blog\/?p=737"},"modified":"2015-09-19T16:46:48","modified_gmt":"2015-09-19T07:46:48","slug":"ruby%e9%85%8d%e5%88%97%e3%81%ae%e3%83%87%e3%83%95%e3%82%a9%e3%83%ab%e3%83%88%e5%80%a4%e3%82%920%e3%81%ab%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"http:\/\/frsw.net\/blog\/ruby%e9%85%8d%e5%88%97%e3%81%ae%e3%83%87%e3%83%95%e3%82%a9%e3%83%ab%e3%83%88%e5%80%a4%e3%82%920%e3%81%ab%e3%81%99%e3%82%8b\/","title":{"rendered":"[Ruby]\u914d\u5217\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u30920\u306b\u3059\u308b"},"content":{"rendered":"<p>\u3069\u3046\u3082\u3053\u3093\u306b\u3061\u306f\uff0cRuby\u3092\u4f7f\u3063\u3066\u3044\u3066\u30cf\u30c3\u30b7\u30e5\u307f\u305f\u3044\u306b\u3042\u308b\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3068\u304d\u306b\u5024\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308c\u3070\u5b09\u3057\u3044\u306a\u3068\u601d\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\uff0c\u3069\u3046\u3082\u305d\u3046\u3044\u3046\u6a5f\u80fd\u304c\u306a\u3044\u3088\u3046\u306a\u306e\u3067\uff0c0\u306b\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3064\u3051\u307e\u3057\u305f\u3002<\/p>\n<p>\u8981\u306f\u7121\u9650\u306e\u8981\u7d20\u306b\u5bfe\u3057\u30660\u3067\u521d\u671f\u5316\u3057\u305f\u3044\u308f\u3051\u3067\u3059\u3002<\/p>\n<pre><code>a = Array.new(,0)\r\n5.times{|i| a[i] += 1}\r\np a =&gt; [1, 1, 1, 1, 1]<\/code><\/pre>\n<p>\u307f\u305f\u3044\u306a\u3053\u3068\u304c\u3057\u305f\u3044\u308f\u3051\u3067\u3059\u3002<br \/>\n\u203b\u3082\u3061\u308d\u3093\u3053\u3093\u306a\u66f8\u304d\u65b9\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<p>\u3071\u3063\u3068\u8003\u3048\u4ed8\u304f\u306e\u306f\uff0cif\u6587\u306a\u3069\u3092\u4f7f\u3063\u3066\u6761\u4ef6\u308f\u3051\u3092\u3059\u308b\u3053\u3068\u3067\u3059\u304c\uff0c<br \/>\n\u305d\u3093\u306a\u306e\u5168\u7136\u30b9\u30de\u30fc\u30c8\u3058\u3083\u306a\u3044\uff01<\/p>\n<p>\u3068\u3044\u3046\u308f\u3051\u3067\u30fb\u30fb\u30fb<br \/>\n\u8003\u3048\u3066\u307f\u307e\u3057\u305f\u3002<\/p>\n<p>\u4eca\u56de\u6ce8\u76ee\u3057\u305f\u306e\u306f\uff0c<br \/>\n\u300cnil\u306b\u5bfe\u3057\u3066#to_i\u3092\u884c\u3046\u30680\u306b\u306a\u308b\u300d<br \/>\n\u3068\u3044\u3046\u6027\u8cea\u3067\u3059\u3002<\/p>\n<p>\u3053\u308c\u3092\u4f7f\u3063\u3066\uff0c\u66f8\u304f\u3068<\/p>\n<pre><code>a = Array.new()\r\n5.times{|i| a[i] = a[i].to_i + 1}\r\np a =&gt; [1, 1, 1, 1, 1]<\/code><\/pre>\n<p>\u307f\u305f\u3044\u306b\u30ef\u30f3\u30e9\u30a4\u30f3\u3067\u66f8\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<br \/>\n\u203b\u3053\u308c\u306f\u3061\u3083\u3093\u3068\u52d5\u304d\u307e\u3059\u3002<\/p>\n<p>\u306a\u306e\u3067\uff0cif\u6587\u3068\u304b\u30672\u884c\u4ee5\u4e0a\u3084\u308a\u305f\u304f\u306a\u3044\u3068\u304d\u306f\u4f7f\u3063\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u307e\u3042\uff0c2\u56de\u76ee\u4ee5\u964d\u306f\u6570\u5024\u306b\u5bfe\u3057\u3066#to_i\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u308b\u306e\u3067\u30a8\u30ec\u30ac\u30f3\u30c8\u3067\u306f\u306a\u3044\u3067\u3059\u306d\u30fb\u30fb\u30fb\u3002<\/p>\n<p><strong>2015\/9\/19\uff08\u571f\uff09\u8ffd\u8a18<\/strong><br \/>\n\u5f8c\u3067\u77e5\u3063\u305f\u306e\u3067\u3059\u304c\u3001Integer#to_i\u30e1\u30bd\u30c3\u30c9\u306fself\u3092\u8fd4\u3059\u3089\u3057\u3044\u306e\u3067<br \/>\n\u3053\u306e\u66f8\u304d\u65b9\u306f\u3042\u306a\u304c\u3061\u9593\u9055\u3063\u3066\u306a\u3044\u304b\u3082\u3057\u3044\u308c\u306a\u3044\u3067\u3059\u306d\uff5e\u3002<br \/>\n\u2192<a href=\"http:\/\/docs.ruby-lang.org\/ja\/2.1.0\/class\/Integer.html#I_TO_I\" target=\"_blank\">http:\/\/docs.ruby-lang.org\/ja\/2.1.0\/class\/Integer.html#I_TO_I<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3069\u3046\u3082\u3053\u3093\u306b\u3061\u306f\uff0cRuby\u3092\u4f7f\u3063\u3066\u3044\u3066\u30cf\u30c3\u30b7\u30e5\u307f\u305f\u3044\u306b\u3042\u308b\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u3068\u304d\u306b\u5024\u304c\u5b58\u5728\u3057\u306a\u3044\u5834\u5408\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u3092\u8a2d\u5b9a\u3067\u304d\u308c\u3070\u5b09\u3057\u3044\u306a\u3068\u601d\u3063\u3066\u3044\u305f\u306e\u3067\u3059\u304c\uff0c\u3069\u3046\u3082\u305d\u3046\u3044\u3046\u6a5f\u80fd\u304c\u306a\u3044\u3088\u3046\u306a\u306e\u3067\uff0c0\u306b\u521d\u671f\u5316\u3059\u308b\u65b9\u6cd5\u3092\u898b\u3064\u3051 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10,4],"tags":[22],"_links":{"self":[{"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/posts\/737"}],"collection":[{"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/comments?post=737"}],"version-history":[{"count":8,"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/posts\/737\/revisions"}],"predecessor-version":[{"id":745,"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/posts\/737\/revisions\/745"}],"wp:attachment":[{"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/media?parent=737"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/categories?post=737"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/frsw.net\/blog\/wp-json\/wp\/v2\/tags?post=737"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}