c++ - Why can't I use uniform initialization when I want to override a value?

Question

bool a{ false };

Now I created a boolean variable, but if I want to do this:

a { false };

a = false;

The first method doesn't work, what's the reason?

Answer 1

You can only do uniform initialization (or any form of initialization) when an object is created. After an object is initialized, you can only modify it:

bool a{false}; // brace initialization
bool b = false; // copy initialization

// a and b are created now, and can't be initialized again

a {false}; // not valid syntax
b = false; // assignment, NOT initialization