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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LEARN ABOUT CENTOS

libpfm_intel_coreduo

LIBPFM(3)						     Linux Programmer's Manual							 LIBPFM(3)

NAME

       libpfm_intel_coreduo - support for Intel Core Duo/Solo processors

SYNOPSIS

       #include <perfmon/pfmlib.h>

       PMU name: coreduo
       PMU desc: Intel Core Duo

DESCRIPTION

       The library supports all Intel Yonah-based processors such as Intel Core Duo and Intel Core Solo processors.

MODIFIERS

       The following modifiers are supported on Intel Core Duo processors:

       u      Measure at user level which includes privilege levels 1, 2, 3. This corresponds to PFM_PLM3.  This is a boolean modifier.

       k      Measure at kernel level which includes privilege level 0. This corresponds to PFM_PLM0.  This is a boolean modifier.

       i      Invert the meaning of the event. The counter will now count cycles in which the event is not occurring. This is a boolean modifier

       e      Enable edge detection, i.e., count only when there is a state transition. This is a boolean modifier.

       c      Set  the counter mask value. The mask acts as a threshold. The counter will count the number of cycles in which the number of occur-
	      rences of the event is greater or equal to the threshold. This is an integer modifier with values in the range [0:255].

ENVIRONMENT VARIABLES

       It is possible to force activation of the Intel Core Duo support using the LIBPFM_FORCE_PMU variable.   The  PMU  name,	coreduo,  must	be
       passed. No additional options are supported.

AUTHORS

       Stephane Eranian <eranian@gmail.com>

								  September, 2009							 LIBPFM(3)