結論 「再代入する」 classやconstに、なんでもいいから値を再代入すると、warningで元々の定義位置を教えてくれるのでその場所を見に行けばOK。 > Some = 1 # class (irb):1: warning: already initialized constant Some ./some.rb:123: warning: previous definition of Some was here > Some::VALUE = 1 # const (irb):2: warning: already initialized constant Some ./some.rb:125: warning: previous definition of Some was here 背景 Rubyでアプリケーションコードを読んでいると、「え、このclass or const(大文字
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