C++ meaning |= and &=

Question

I have a part of code that contains the following functions:

void Keyboard(int key)
{
    switch (key) {
    case GLFW_KEY_A: m_controlState |= TDC_LEFT; bre         


        

Answer 1

x |= y is equivalent to x = x|y

In general, for any binary operator *, a *= b is equivalent to a = a*b

If you want to know what & and | are, read about bitwise operators.