Check if element is in the list (contains)

Question

I\'ve got a list of elements, say, integers and I want to check if my variable (another integer) is one of the elements from the list. In python I\'d do:

my_list         


        

Answer 1

A one-liner solution, similar to python, would be (std::set {1, 2, 3, 4}).count(my_var) > 0.

Minimal working example

int my_var = 3;
bool myVarIn = (std::set {1, 2, 3, 4}).count(my_var) > 0;
std::cout << std::boolalpha << myVarIn << std::endl;

prints true or false dependent of the value of my_var.