std::find on a vector of object pointers

Question

I have a class A with a member which is a vector of object pointers of another class B

class A
{
    std::vector m_member_A
<         


        

Answer 1

Vector works perfectly fine with std::find

auto result = std::find(m_member_A.begin(), m_member_A.end(), itemToFind);
if (result != m_member_A.end()) {
  // found it!
}

Or if you need to dereference the pointer:

auto result = std::find_if(m_member_A.begin(), m_member_A.end(), 
  [] (B* item) { 
    if (item == nullptr) return false; // may want to do something else here
    return *item == someValue;
  });
if (result != m_member_A.end()) {
  // found it!
}

Demo: http://ideone.com/jKCrG5