| bufio | Package bufio implements buffered I/O. It wraps an io.Reader or io.Writer object, creating another object (Reader or Writer) that also implements the interface but provides buffering and some help for textual I/O. |
| bytes | Package bytes implements functions for the manipulation of byte slices. |
| cmp | Package cmp provides types and functions related to comparing ordered values. |
| encoding/binary | Package binary implements simple translation between numbers and byte sequences and encoding and decoding of varints. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| golang.org/x/exp/trace/internal/tracev1 | Package tracev1 implements a parser for Go execution traces from versions 1.11–1.21. |
| golang.org/x/exp/trace/internal/tracev2 | Package tracev2 contains definitions for the v2 execution trace wire format. |
| golang.org/x/exp/trace/internal/version | |
| io | Package io provides basic interfaces to I/O primitives. |
| iter | Package iter provides basic definitions and operations related to iterators over sequences. |
| math | Package math provides basic constants and mathematical functions. |
| math/bits | Package bits implements bit counting and manipulation functions for the predeclared unsigned integer types. |
| runtime/trace | Package trace contains facilities for programs to generate traces for the Go execution tracer. |
| slices | Package slices defines various functions useful with slices of any type. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |
| unsafe | Package unsafe contains operations that step around the type safety of Go programs. |