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  <author_name>obelisk2</author_name>
  <author_url>https://blog.hatena.ne.jp/obelisk2/</author_url>
  <blog_title>Camera Obscura</blog_title>
  <blog_url>https://obelisk.hatenablog.com/</blog_url>
  <categories>
    <anon>Ruby</anon>
    <anon>Gem 'oekaki'</anon>
  </categories>
  <description>自作の Gem 'oekaki' を使っています。 oekaki | RubyGems.org | your community gem host GTK+でお絵かきしてみた（Ruby） - Camera Obscura oekaki_sample17.rb require 'oekaki' Width = 500 circles = [] #作った円の情報を保持しておく配列 check = -&gt;(x, y, r) { return false if x &lt; r or y &lt; r or x &gt; Width - r or y &gt; Width - r circles.each do |x1, y1…</description>
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  <image_url>http://img.f.hatena.ne.jp/images/fotolife/o/obelisk2/20180123/20180123113327.png</image_url>
  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2018-01-23 12:16:13</published>
  <title>GTK+ で落書き 14（Ruby）</title>
  <type>rich</type>
  <url>https://obelisk.hatenablog.com/entry/2018/01/23/121613</url>
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