Golang 1.21 brings built-in functions, profile-guided optimization

Go 1.21, the latest update of Google’s Go programming language, is now available as a release candidate. The new version adds built-in functions—min, max, and clear—and makes profile-guided optimization (PGO) generally available. WebAssembly accommodations also are highlighted.

The min and max functions compute the smallest or largest value, respectively, of a fixed number of arguments or ordered types. There must be at least one argument. The clear function takes an argument of map, slice...