What operations could such frozen vector offer that std::vector does not? If there are none, it doesn't need a separate data structure.
What operations could such frozen vector offer that std::vector does not? If there are none, it doesn't need a separate data structure.
Oh, on the contrary, the separate structure is needed and useful because it offers _less_, not more:
* APIs/function signatures explain more clearly what are the intended uses of the structure that's passed.
* More potential for compiler optimization
* Some potential for having these on the stack (if the compiler deduces the size already at compile-time)
* More convenient for static analysis
* No plethora of confusing constructors (including the infernal two-element ctors which can be misinterpreted super-easily)
etc.