A min= idiom in C++?

Question

We use

x += y

instead of

x = x + y

And similarly for *,/,- and other operators. Well, what about

Answer 1

It's certainly not idiomatic, but you might be able to use something called named operators (see these Q&As here and here, developed by @Yakk and @KonradRudolph), and write

x = y;

which is made possible by overloading operator< and operator>, combined with a clever wrapped named_operator. The full code is given by the link above, but uses code like

template 
inline auto operator >(named_operator_lhs const& lhs, T2 const& rhs)
    -> decltype(lhs.f(std::declval(), std::declval()))
{
    return lhs.f(lhs.value, rhs);
}

Using std::min as template argument for the template parameter F, would update the lhs of the expression with the min of the lhs and rhs.