What makes Rust better at rapid prototyping? Cargo? I find that modern C++ "kitchen sink" approach to features makes it good for rapid prototyping, a bit like

What makes Rust better at rapid prototyping? Cargo? I find that modern C++ "kitchen sink" approach to features makes it good for rapid prototyping, a bit like Perl on the dynamic side. It won't force you into a specific approach, pick the one that gets you there the fastest. Use raw pointers and malloc(), or use fancy smart pointers and RAII, your choice, you can also do both, you have exceptions, you have goto, you can write(), printf() and cout, you have classes and lambdas and (multiple) inheritance and traits. More options are better for rapid prototyping. Also, C++ is the most popular language for competitive programming, you can't get more "rapid" than that.