Actually, functions will automatically implement either ForEachSystem or IntoQuerySystem if its signature is correct. Since these traits are imported in prelude, we can run .system() on any valid function to get a system without macros.
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Thanks. How does it know that
fn setupis a system. Do we add#[system]macro above it ?Actually, functions will automatically implement either ForEachSystem or IntoQuerySystem if its signature is correct. Since these traits are imported in prelude, we can run
.system()on any valid function to get a system without macros.