Zig Academy · Lesson

Profiling and Safety Trade-offs

Measure cost and validate correctness.

Measure Before You Tune

Performance work starts with measurement, not guesses. You need real numbers before deciding which data structure is actually too slow. ⏱️

The same code runs very differently per build mode. Profile in ReleaseFast for true speed, since Debug adds many safety checks.

zig build-exe ds.zig -O ReleaseFast