What is actually the meaning of writing :
template<class T ? What is T representing here?
And what is the meaning of writing :
template<class ForwardIterator, class T> ? How forward Iterator class is different than class T ?
I am really unable to understand these terms. It seems to be more difficult than recursion. Please help !!!
hello @yashsharma4304
T is placeholder ie we can replace T with any dataype that we want to use.
T here is generic i.e we can use any datatype/class in place of T as per our need.
whereas ForwardIterator is a specific class we cant replace it with any other datatype.
pls read some articles on generic programing and c++ templates if u find it difficult.
So in place of T can I write any other alphabet or is it some kind of fixed notation ?
U can use any other alphabet. . . . .
it will work fine.
example->
#include <iostream>
using namespace std;
// One function works for all data types. This would work
// even for user defined types if operator '>' is overloaded
template <typename F>
F myMax(F x, F y)
{
return (x > y)? x: y;
}
int main()
{
cout << myMax<int>(3, 7) << endl; // Call myMax for int
cout << myMax<double>(3.0, 7.0) << endl; // call myMax for double
cout << myMax<char>('g', 'e') << endl; // call myMax for char
return 0;
}
Ok thanks for resolving my doubt. I will read some articles to understand these topic better
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