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  1. #include <iostream>
  2. #include <string>
  3. #include <set>
  4. using namespace std;
  5.  
  6. int main() {
  7.     auto lexical_compare = [](string a, string b) { return a < b; };
  8.     set<string, decltype(lexical_compare)> s(lexical_compare);
  9.  
  10.     s.insert("one");
  11.     s.insert("two");
  12.     s.insert("three");
  13.     s.insert("one");
  14.     s.insert("two");
  15.     s.insert("three");
  16.  
  17.     for (string x : s)
  18.         cout << x << ' ';
  19.  
  20.     return 0;
  21. }
Success #stdin #stdout 0s 5300KB
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stdin
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Standard input is empty
stdout
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one three two
https://ideone.com/dCQFBx
language:
C++ (gcc 8.3)
created:
34 days ago
visibility:
public

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