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  <author_name>shigemk2</author_name>
  <author_url>https://blog.hatena.ne.jp/shigemk2/</author_url>
  <blog_title>by shigemk2</blog_title>
  <blog_url>https://www.shigemk2.com/</blog_url>
  <categories>
    <anon>Emacs Lisp</anon>
  </categories>
  <description>(when 条件 真フォーム1 真フォーム2 ..) 最後に評価した真フォーム・条件を満たさないときはnil(unless 条件 偽フォーム1 偽フォーム2 ..) 最後に評価した偽フォーム・条件を満たしたときはnil;;; whenの中が実行される例 (let (msg) (when (= 0 (% 6 2)) ;; ここには複数のフォームを置ける (setq msg &quot;6は偶数です&quot;)) msg) ; =&gt; &quot;6は偶数です&quot; ;;; whenの中が実行されない例 (let (msg) (when (= 1 (% 6 2)) (setq msg &quot;6は奇数です&quot;)) msg) ; =&gt; ni…</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2012-04-09 03:42:17</published>
  <title>whenとunless</title>
  <type>rich</type>
  <url>https://www.shigemk2.com/entry/20120409/1333910537</url>
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