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  1. #include <map>
  2. #include <utility>
  3. #include <iostream>
  4. #include <algorithm>
  5.  
  6. using namespace std;
  7.  
  8.  
  9. namespace {
  10.  
  11.     auto pair2params = [](auto&& f)
  12.     {
  13.     	return [f](auto&& p) {
  14.     		f(p.first, p.second);
  15.     	};
  16.     };
  17.  
  18.  
  19.     template<typename Rng, typename Pred>
  20.     auto for_each(const Rng& rng, Pred&& pred) -> void
  21.     {
  22.     	for_each(begin(rng), end(rng), pred);
  23.     }
  24.  
  25. }
  26.  
  27.  
  28. int main()
  29. {
  30.     auto values = map<int, string>{
  31.         {0, "hello"},
  32.         {1, "world!"}
  33.     };
  34.  
  35.     for_each(values, pair2params([](int key, const string& value) {
  36.         cout << key << ": " << value << "\n";
  37.     }));
  38. }
Success #stdin #stdout 0s 3464KB
comments (?)
stdin
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Standard input is empty
stdout
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0: hello
1: world!
https://ideone.com/Bs9Ctm
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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