STL transform question Post: 302607564

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Top Forums Programming STL transform question Post 302607564 by santiagorf on Wednesday 14th of March 2012 06:36:51 PM

03-14-2012

Registered User

[]solved]STL transform question

Hi all,
I pass to the transform algorithm two vectors, and the suma function.

Code:

#include <algorithm>
#include <iostream>
#include <iterator>
#include <vector>
using namespace std;

class Duo{
    public:
    int one;
    int two;
};

Duo suma(Duo first, Duo last){
    Duo ret;
    ret.one=first.one+last.one;
    ret.two=first.two+last.two;
    return ret;
}

int main(){
  vector<Duo> vec1;
  vector<Duo> vec2;

Duo obj;
  for (int i=0; i<5; i++){
    obj.one=i;
    obj.two=i;
    vec1.push_back(obj);
  }
  transform(vec1.begin(),vec1.end(),vec2.begin(),suma);

  return 0;
}

When I compile it, I get the following error.

Code:

/usr/include/c++/4.5/bits/stl_algo.h||In function �_OIter std::transform(_IIter, _IIter, _OIter, _UnaryOperation)
 [with _IIter = __gnu_cxx::__normal_iterator<Duo*, std::vector<Duo> >, _OIter = 
__gnu_cxx::__normal_iterator<Duo*, std::vector<Duo> >, _UnaryOperation = Duo (*)(Duo, Duo)]':|
/home/rav/Desktop/bas/main.cpp:30|54|instantiated from here|

/usr/include/c++/4.5/bits/stl_algo.h|4688|error: too few arguments to function|
||=== Build finished: 1 errors, 0 warnings ===|

What am I'm doing wrong? How can I fix it?

thanks!!
santiagorf

Last edited by santiagorf; 03-15-2012 at 09:57 PM..

santiagorf

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papi_set_domain

PAPI_set_domain(3)						       PAPI							PAPI_set_domain(3)

NAME

       PAPI_set_domain -

       Set the default counting domain for new event sets bound to the cpu component.

SYNOPSIS

Detailed Description
       @par C Prototype:
	       int PAPI_set_domain( int domain );

       @param domain one of the following constants as defined in the papi.h header file
       @arg PAPI_DOM_USER User context counted
       @arg PAPI_DOM_KERNEL  Kernel/OS context counted
       @arg PAPI_DOM_OTHER Exception/transient mode counted
       @arg PAPI_DOM_SUPERVISOR Supervisor/hypervisor context counted
       @arg PAPI_DOM_ALL All above contexts counted
       @arg PAPI_DOM_MIN The smallest available context
       @arg PAPI_DOM_MAX The largest available context

       Return values:
	   PAPI_OK
	   PAPI_EINVAL One or more of the arguments is invalid.

       PAPI_set_domain sets the default counting domain for all new event sets created by PAPI_create_eventset in all threads. This call
       implicitly sets the domain for the cpu component (component 0) and is included to preserve backward compatibility.

       Example:

	   int ret;

	   // Initialize the library
	   ret = PAPI_library_init(PAPI_VER_CURRENT);
	   if (ret > 0 && ret != PAPI_VER_CURRENT) {
	     fprintf(stderr,"PAPI library version mismatch!0);
	     exit(1);
	   }
	   if (ret < 0) handle_error(ret);

	   // Set the default domain for the cpu component
	   ret = PAPI_set_domain(PAPI_DOM_KERNEL);
	   if (ret != PAPI_OK) handle_error(ret);
	   ret = PAPI_create_eventset(&EventSet);
	   if (ret != PAPI_OK) handle_error(ret);
	    *

       See Also:
	   PAPI_set_cmp_domain PAPI_set_granularity PAPI_set_opt PAPI_get_opt

Author
       Generated automatically by Doxygen for PAPI from the source code.

Version 5.2.0.0 						  Tue Jun 17 2014						PAPI_set_domain(3)