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weak typing - Does ruby 1.9.2 have an is_a? function?
    I googled that there is an is_a? function to check whether an object is an integer or not. But I tried in ... 1.is_a? Did I miss something? See Question&Answers more detail:os...
asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)
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