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  <author_name>melpon</author_name>
  <author_url>https://blog.hatena.ne.jp/melpon/</author_url>
  <blog_title>melpon日記 - HaskellもC++もまともに扱えないへたれのページ</blog_title>
  <blog_url>https://melpon.hatenadiary.org/</blog_url>
  <categories>
    <anon>C++</anon>
  </categories>
  <description>cppreference.com の map::operator[] の説明を読むと、こんなことが書かれています。 1) Essentially performs (insert(std::make_pair(key, T())).first)-&gt;second. 2) Essentially performs (insert(std::make_pair(std::move(key), T())).first)-&gt;second. std::map::operator[] - cppreference.com operator[] は insert(make_pair(key, T())).fi…</description>
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  <provider_name>Hatena Blog</provider_name>
  <provider_url>https://hatena.blog</provider_url>
  <published>2012-06-24 12:06:06</published>
  <title>mapのoperator[]</title>
  <type>rich</type>
  <url>https://melpon.hatenadiary.org/entry/20120624/1340507166</url>
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