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Existence map in C++

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I want something like an std::map, but I only want to see if the item exists or not, I don't actually need a key AND a value. What should I use? JavaScript questions and answers, JavaScript questions pdf, JavaScript question bank, JavaScript questions and answers pdf, mcq on JavaScript pdf, JavaScript questions and solutions, JavaScript mcq Test , Interview JavaScript questions, JavaScript Questions for Interview, JavaScript MCQ (Multiple Choice Questions)

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Looks like you need a std::set.

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