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Learn to get an intuition for how your code performs.

When is it appropriate to allocate memory from the heap? If you're in a rendering or audio processing routine in realtime context, avoid it at all cost.

Think about which parts of the code could profit from optimization. Does learning an assembler for a specific platform pay off or can the compiler do a sufficiently good job with -O3? Use profilers to identify performance bottlenecks.

Think about portability. Does the code have to compile with ancient C89 compatible compilers [Mine has to, and I would be excited to see a Rust to C transpiler]? Can you choose your compilers by yourself? Are they provided by your customers?






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