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omhari's blog

Use of std::function in c++

By omhari, history, 3 years ago, In English

Is there any difference between normal function

Code

#include<bits/stdc++.h>
using namespace std; 

int square(int a)
{
    return a*a;
}
int main() 
{
    cout<<square(5);
    return 0; 
}

and a function created using std::function

Code

#include<bits/stdc++.h>
using namespace std; 

int main() 
{
    function<int(int)> square=[&](int a){
        return a*a;
    };

    cout<<square(5);
    return 0; 
}

Full text and comments »

c++

omhari
3 years ago
9