#Ruby‐ハッシュについて‐
変数名＝｛シンボル：値１,シンボル：値２｝
puts 変数名［：シンボル］
qiita.rb
cat = {name: "siro", age: 23}
put cat[:name]
jsと似ているが出力の表記が違うので注意！
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