33 lines
743 B
C++
33 lines
743 B
C++
#include <map>
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#include <iostream>
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#include <algorithm>
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#include <vector>
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int main() {
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using MyDict = std::map<std::string, int>;
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MyDict dict = {
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{"One", 1},
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{"Two", 2},
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{"Three", 7}
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};
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dict["Three"] = 3;
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std::cout << "One: " << dict["One"] << std::endl;
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// Make vector of the keys from our map
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std::vector<std::string> keys;
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std::transform(dict.begin(), dict.end(), std::back_inserter(keys),
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[](MyDict::value_type& kv) { return kv.first; });
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std::cout << "Keys: " << std::endl;
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for(auto& key: keys) std::cout << " " << key << std::endl;
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std::cout << "Key/Value pairs: " << std::endl;
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for(auto& kv: dict) {
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std::cout << " " << kv.first << ": " << kv.second << std::endl;
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}
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return 0;
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}
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