STL list, delete all the odd numbers

Question

I am trying to learn how to work with STL and tried to write a function which will recieve a refference to a list and will try to delete all odd members. I am having a sligh

Answer 1

The easiest way to do it would be to use std::list::remove_if. This removes elements from the list based on a unary predicate. For example,

myvector.remove_if([](int n) { return n % 2 != 0; });

The best way to work with the "STL"^* is to know what is in it.

For pre-C++11 implementations (such as the actual STL), you can pass a function:

bool is_odd(int n) { return n % 2 != 0; }

myvector.remove_if(is_odd);

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^{*"STL" means the STL but this also applies the C++ standard library}