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> You are right, though I seldom find it a problem in practice.

Although it's easy to to tell people that mutation is confusing and to avoid it, enforcing that is much easier if the compiler is on your side and will prevent mutation with const.

I've encountered unnecessary mutation (introducing implicit assumptions on the order of calls, and making things more confusing) constantly in both Java and C++, but enforcing const in C++ cuts down on that. Or at least, it forces a const_cast which I won't approve without a really good reason.

You're right about Rust of course, internal mutability is possible and maybe even common with RefCell, but culturally it seems like that's avoided. On the other hand, mutability is extremely common in Java.

Maybe I'm just traumatized from some of the horrific code heavily using mutation I've seen over the years.




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