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シンボル

Posted at

シンボルとは、

・見ため文字列だけど、
内部的に数値として扱われるもの。
・比較、検索に関して速度面で有利であるメリットがあるので、データの名前に使われることが多い。

[使用方法]
コロンを前置して定義する。

[使用例]
:test

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