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  1. #include <iostream>
  2. #include <iterator>
  3. #include <algorithm>
  4. #include <unordered_set>
  5.  
  6. int main() {
  7. 	std::string str = "pooaatat";
  8.  
  9. 	std::unordered_set<char> container;
  10. 	std::copy_if(str.begin(), str.end(), std::ostream_iterator<char>(std::cout),
  11. 	            [&](char c) { return container.insert(c).second; });
  12. }
Success #stdin #stdout 0s 3476KB
comments (?)
stdin 
Standard input is empty
stdout 
poat
https://ideone.com/WkqSBq
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
public

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