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  1. // Type your code here, or load an example.
  2. #include <map>
  3. #include <string>
  4. #include <iostream>
  5.  
  6. struct Example : std::string {
  7.     Example() : Example("empty str") { }
  8.  
  9.     template <typename T>
  10.     Example(T&& v) : std::string(std::forward<T>(v)) {
  11.         std::cout << "allocated: " << *this << std::endl;
  12.     };
  13.  
  14.     Example(const Example&) = default;
  15.     Example& operator=(const Example&) = default;
  16.  
  17.     Example(Example&&) = default;
  18.     Example& operator=(Example&&) = default;
  19.  
  20.     ~Example() {
  21.         std::cout << "deallocated: " << *this << std::endl;
  22.     }
  23. };
  24.  
  25. int main () {
  26.     std::map<Example, Example> test;
  27.     test["example"] = std::string("Something");
  28. }
Success #stdin #stdout 0s 5280KB
comments (?)
stdin
copy 
Standard input is empty
stdout
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allocated: Something
allocated: example
allocated: empty str
deallocated: 
deallocated: 
deallocated: Something
deallocated: example
https://ideone.com/ZmpbRp
language:
C++ (gcc 8.3)
created:
4 days ago
visibility:
public

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