C++ Programming Code Examples
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Transform, bind2nd and modulus
/* Transform, bind2nd and modulus */
#include <algorithm>
#include <functional>
#include <cstdlib>
#include <vector>
#include <iostream>
using namespace std;
template <class T>
void print(T& c){
for( typename T::iterator i = c.begin(); i != c.end(); i++ ){
std::cout << *i << endl;
}
}
int main( )
{
vector<int> random( 8 );
generate( random.begin(), random.end(), rand );
print( random);
transform( random.begin(), random.end(), random.begin(),bind2nd( modulus<int>(), 6 ) );
print( random );
}
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Consider a situation, when we have two persons with the same name, jhon, in the same class. Whenever we need to differentiate them definitely we would have to use some additional information along with their name, like either the area, if they live in different area or their mother's or father's name, etc. Same situation can arise in your C++ applications. For example, you might be writing some code that has a function called xyz() and there is another library available which is also having same function xyz(). Now the compiler has no way of knowing which version of xyz() function you are referring to within your code.
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Return function object with second parameter bound. This function constructs an unary function object from the binary function object op by binding its second parameter to the fixed value x. The function object returned by bind2nd has its operator() defined such that it takes only one argument. This argument is used to call binary function object op with x as the fixed value for the second argument. This function template creates a binder2nd function object. The bind2nd function is a convenient way to construct a binder2nd object. Use bind2nd when you have a binary function and always want to supply the same value as the first argument to the function.
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To convert decimal number to binary number in C++, you have to enter the decimal number to convert it into 'binary number' to print the equivalent value in binary format as shown in
