C / C++ / MFC

template <typename collection>
collection operator/( const collection &c, typename collection::value_type divisor )
{
     collection transformed;
     std::transform( c.begin(), c.end(), std::back_inserter( transformed ), [divisor]( collection::value_type to_divide) { return to_divide/divisor } );
     return transformed;
}

long double op_divide (long double d) { return d/5; }
transform (vec1.begin(), vec1.end(), vec2.begin(), op_divide);

long double op_divide( long double numerator, long double denominator ) { return numerator/denominator; }

transform( vec.begin(), vec1.end(), vec2.begin(), std::bind2nd( op_divide, 5.0 ) );

error C2825: '_Fn2': must be a class or namespace when followed by '::'

error C2039: 'first_argument_type' : is not a member of '`global namespace''

std::transform( input.begin(), input.end(), output.begin(), std::bind2nd( std::ptr_fun( op_divide ), 5 ) ) );

// Console.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
#include <vector>
#include <algorithm>
#include <iterator>
#include <functional>

int _tmain(int argc, _TCHAR* argv[])
{
	using namespace std;

	// Create and fill a vector.
	vector<double> nums;
	for (int i=1; i<=10; ++i)
		nums.push_back(i);

	// Print out the vector's contents.
	cout << "Before: ";
	copy(nums.begin(), nums.end(), ostream_iterator<double>(cout, " "));
	cout << endl << endl;

	// Divide all elements by two.
	transform(
		nums.begin(), nums.end(),
		nums.begin(),
		bind2nd(divides<double>(), 2.0)
		);

	// Print out the vector's contents.
	cout << "After: ";
	copy(nums.begin(), nums.end(), ostream_iterator<double>(cout, " "));
	cout << endl << endl;

	return 0;
}

Moak wrote:

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