{"height":"190","url":"https://www.shigemk2.com/entry/2018/09/16/174323","published":"2018-09-16 17:43:23","image_url":null,"author_name":"shigemk2","blog_title":"by shigemk2","width":"100%","version":"1.0","provider_name":"Hatena Blog","type":"rich","provider_url":"https://hatena.blog","blog_url":"https://www.shigemk2.com/","title":"defvar","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.shigemk2.com%2Fentry%2F2018%2F09%2F16%2F174323\" title=\"defvar - by shigemk2\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","categories":["Emacs"],"author_url":"https://blog.hatena.ne.jp/shigemk2/","description":"The defvar special form is similar to setq in that it sets the value of a variable. It is unlike setq in two ways: first, it only sets the value of the variable if the variable does not already have a value. If the variable already has a value, defvar does not override the existing value. Second, de\u2026"}