Package strconv implements conversions to and from string representations of basic data types.

Package strings implements simple functions to manipulate UTF-8 encoded strings.

Package sync provides basic synchronization primitives such as mutual exclusion locks.

Package atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms.

Package syscall contains an interface to the low-level operating system primitives.

Package js gives access to the WebAssembly host environment when using the js/wasm architecture.

Package testing provides support for automated testing of Go packages.

Package fstest implements support for testing implementations and users of file systems.

Package iotest implements Readers and Writers useful mainly for testing.

Package quick implements utility functions to help with black box testing.