Search for a struct item in a vector by member data

Question

I\'m very new to c++ and I\'m trying to find a way to search a vector of structs for a struct with a certain member data.

I know this would work with simple types in

Answer 1

You can use std::find_if in combination with functors (if you are working with C++98) or lambdas (if you are using C++11, which I will assume):

using namespace std;
int ID = 3; // Let's say...
auto it = find_if(begin(vector), end(vector), [=] (Friend const& f) { 
    return (f.ID == ID); 
    });
bool found = (it != end(vector));