How does Mojo balance fast compiles and providing zero-cost abstractions to the user?
In the Mojo docs, it's mentioned that the Mojo compiler is "simple and fast by definition" and not "magic". Fast compilation speed is also a design goal.
My understanding is that in languages like Rust, the compile-time checks which are used for optimizations and the optimizations themselves contribute a lot to compilation speed (or rather the lack of compilation speed).
How does Mojo aim to provide high level zero-cost abstractions and performance comparable to C++ and Rust? What are the limits to its optimizations? How much of a burden is there on the programmer to keep the code fast as abstraction levels increase?
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