Package types declares the data types and implements the algorithms for type-checking of Go packages.

Package version provides operations on [Go versions] in [Go toolchain name syntax]: strings like "go1.20", "go1.21.0", "go1.22rc2", and "go1.23.4-bigcorp".

Package hash provides interfaces for hash functions.

Package adler32 implements the Adler-32 checksum.

Package crc32 implements the 32-bit cyclic redundancy check, or CRC-32, checksum.

Package crc64 implements the 64-bit cyclic redundancy check, or CRC-64, checksum.

Package fnv implements FNV-1 and FNV-1a, non-cryptographic hash functions created by Glenn Fowler, Landon Curt Noll, and Phong Vo.

Package maphash provides hash functions on byte sequences.

Package html provides functions for escaping and unescaping HTML text.

Package template (html/template) implements data-driven templates for generating HTML output safe against code injection.