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  1. #include <iostream>
  2. #include <functional>
  3.  
  4. using namespace std;
  5.  
  6. typedef int value;
  7.  
  8. template<class Signature>
  9. function<void(int, value[])>
  10. thunk( function<Signature> f );
  11.  
  12.  
  13. template<class R, class Arg1>
  14. function<void(int, value[])>
  15. thunk( function<R(Arg1)> f )
  16. {
  17. 	return [f](int, value v[]) -> R
  18. 	{
  19. 		return f(v[0]);
  20. 	};
  21. }
  22.  
  23.  
  24. template<class R, class Arg1, class Arg2>
  25. function<void(int, value[])>
  26. thunk( function<R(Arg1, Arg2)> f )
  27. {
  28. 	return [f](int, value v[]) -> R
  29. 	{
  30. 		return f(v[0], v[1]);
  31. 	};
  32. }
  33.  
  34.  
  35. void f1(int p1) { cout << "f1\t" << p1 << "\n"; }
  36. void f2(int p1, int p2) { cout << "f2\t" << p1 << "\t" << p2 << "\n"; }
  37.  
  38. int main() {
  39. 	int a1[] = {1};
  40. 	int a2[] = {3, 4};
  41. 	thunk( std::function<void(int)>(f1) )(1, a1);
  42. 	thunk( std::function<void(int, int)>(f2) )(2, a2);
  43. 	return 0;
  44. }
Success #stdin #stdout 0s 3432KB
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stdin
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Standard input is empty
stdout
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f1	1
f2	3	4
https://ideone.com/rOEOOc
language:
C++14 (gcc 8.3)
created:
11 years ago
visibility:
public

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