https://fuyulang.org/docs/weekly0.5https://fuyulang.org/docs/advanced-topicsweekly0.5https://fuyulang.org/docs/basicsweekly0.5https://fuyulang.org/docs/control-flowweekly0.5https://fuyulang.org/docs/effectsweekly0.5https://fuyulang.org/docs/functionsweekly0.5https://fuyulang.org/docs/modules-and-packagesweekly0.5https://fuyulang.org/docs/traitsweekly0.5https://fuyulang.org/docs/typesweekly0.5https://fuyulang.org/weekly0.5