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  1. #include <iostream>
  2. #include <algorithm>
  3. #include <numeric>
  4. #include <vector>
  5.  
  6. template<typename Container, typename Transform>
  7. void transform_container(Container & container, Transform transform) {
  8.   std::transform(std::begin(container), std::end(container),
  9.                  std::begin(container), /* requires output iterator */
  10.                  transform);
  11. }
  12.  
  13. template<typename T, typename Container>
  14. auto inner_product_self(Container&& container, T initial) {
  15.   return std::inner_product(std::begin(container), std::end(container),
  16.                             std::begin(container),
  17.                             initial);
  18. }
  19.  
  20.  
  21. int main() {
  22.   std::vector<int> v(2);
  23.   std::iota(std::begin(v), std::end(v), 0);
  24.  
  25.   transform_container(v, [](auto i) { return i + 2; });
  26.   transform_container(v, [](auto i) { return i * 3; });
  27.  
  28.   auto result = inner_product_self(v, 0);
  29.  
  30.   std::cout << "result: " << result;
  31. }
Success #stdin #stdout 0s 15240KB
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stdin
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Standard input is empty
stdout
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result: 117
https://ideone.com/4KBi9n
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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