| Package | Description |
|---|
| archive/tar |
Package tar implements access to tar archives. |
| archive/zip |
Package zip provides support for reading and writing ZIP archives. |
| 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. |
| builtin |
Package builtin provides documentation for Go's predeclared identifiers. |
| bytes |
Package bytes implements functions for the manipulation of byte slices. |
| compress/bzip2 |
Package bzip2 implements bzip2 decompression. |
| compress/flate |
Package flate implements the DEFLATE compressed data format, described in RFC 1951. |
| compress/gzip |
Package gzip implements reading and writing of gzip format compressed files, as specified in RFC 1952. |
| compress/lzw |
Package lzw implements the Lempel-Ziv-Welch compressed data format, described in T. A. Welch, “A Technique for High-Performance Data Compression”, Computer, 17(6) (June 1984), pp 8-19. |
| compress/zlib |
Package zlib implements reading and writing of zlib format compressed data, as specified in RFC 1950. |
| container/heap |
Package heap provides heap operations for any type that implements heap.Interface. |
| container/list |
Package list implements a doubly linked list. |
| container/ring |
Package ring implements operations on circular lists. |
| context |
Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| crypto |
Package crypto collects common cryptographic constants. |
| crypto/aes |
Package aes implements AES encryption (formerly Rijndael), as defined in U.S. Federal Information Processing Standards Publication 197. |
| crypto/cipher |
Package cipher implements standard block cipher modes that can be wrapped around low-level block cipher implementations. |
| crypto/des |
Package des implements the Data Encryption Standard (DES) and the Triple Data Encryption Algorithm (TDEA) as defined in U.S. Federal Information Processing Standards Publication 46-3. |
| crypto/dsa |
Package dsa implements the Digital Signature Algorithm, as defined in FIPS 186-3. |
| crypto/ecdsa |
Package ecdsa implements the Elliptic Curve Digital Signature Algorithm, as defined in FIPS 186-3. |
| crypto/ed25519 |
Package ed25519 implements the Ed25519 signature algorithm. |
| crypto/elliptic |
Package elliptic implements several standard elliptic curves over prime fields. |
| crypto/hmac |
Package hmac implements the Keyed-Hash Message Authentication Code (HMAC) as defined in U.S. Federal Information Processing Standards Publication 198. |
| crypto/md5 |
Package md5 implements the MD5 hash algorithm as defined in RFC 1321. |
| crypto/rand |
Package rand implements a cryptographically secure random number generator. |
| crypto/rc4 |
Package rc4 implements RC4 encryption, as defined in Bruce Schneier's Applied Cryptography. |
| crypto/rsa |
Package rsa implements RSA encryption as specified in PKCS#1. |
| crypto/sha1 |
Package sha1 implements the SHA-1 hash algorithm as defined in RFC 3174. |
| crypto/sha256 |
Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-4. |
| crypto/sha512 |
Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256 hash algorithms as defined in FIPS 180-4. |
| crypto/subtle |
Package subtle implements functions that are often useful in cryptographic code but require careful thought to use correctly. |
| crypto/tls |
Package tls partially implements TLS 1.2, as specified in RFC 5246, and TLS 1.3, as specified in RFC 8446. |
| crypto/x509 |
Package x509 parses X.509-encoded keys and certificates. |
| crypto/x509/pkix |
Package pkix contains shared, low level structures used for ASN.1 parsing and serialization of X.509 certificates, CRL and OCSP. |
| database/sql |
Package sql provides a generic interface around SQL (or SQL-like) databases. |
| database/sql/driver |
Package driver defines interfaces to be implemented by database drivers as used by package sql. |
| debug/dwarf |
Package dwarf provides access to DWARF debugging information loaded from executable files, as defined in the DWARF 2.0 Standard at http://dwarfstd.org/doc/dwarf-2.0.0.pdf |
| debug/elf |
Package elf implements access to ELF object files. |
| debug/gosym |
Package gosym implements access to the Go symbol and line number tables embedded in Go binaries generated by the gc compilers. |
| debug/macho |
Package macho implements access to Mach-O object files. |
| debug/pe |
Package pe implements access to PE (Microsoft Windows Portable Executable) files. |
| debug/plan9obj |
Package plan9obj implements access to Plan 9 a.out object files. |
| encoding |
Package encoding defines interfaces shared by other packages that convert data to and from byte-level and textual representations. |
| encoding/ascii85 |
Package ascii85 implements the ascii85 data encoding as used in the btoa tool and Adobe's PostScript and PDF document formats. |
| encoding/asn1 |
Package asn1 implements parsing of DER-encoded ASN.1 data structures, as defined in ITU-T Rec X.690. |
| encoding/base32 |
Package base32 implements base32 encoding as specified by RFC 4648. |
| encoding/base64 |
Package base64 implements base64 encoding as specified by RFC 4648. |
| encoding/binary |
Package binary implements simple translation between numbers and byte sequences and encoding and decoding of varints. |
| encoding/csv |
Package csv reads and writes comma-separated values (CSV) files. |
| encoding/gob |
Package gob manages streams of gobs - binary values exchanged between an Encoder (transmitter) and a Decoder (receiver). |
| encoding/hex |
Package hex implements hexadecimal encoding and decoding. |
| encoding/json |
Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| encoding/pem |
Package pem implements the PEM data encoding, which originated in Privacy Enhanced Mail. |
| encoding/xml |
Package xml implements a simple XML 1.0 parser that understands XML name spaces. |
| errors |
Package errors implements functions to manipulate errors. |
| expvar |
Package expvar provides a standardized interface to public variables, such as operation counters in servers. |
| flag |
Package flag implements command-line flag parsing. |
| fmt |
Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| go/ast |
Package ast declares the types used to represent syntax trees for Go packages. |
| go/build |
Package build gathers information about Go packages. |
| go/constant |
Package constant implements Values representing untyped Go constants and their corresponding operations. |
| go/doc |
Package doc extracts source code documentation from a Go AST. |
| go/format |
Package format implements standard formatting of Go source. |
| go/importer |
Package importer provides access to export data importers. |
| go/parser |
Package parser implements a parser for Go source files. |
| go/printer |
Package printer implements printing of AST nodes. |
| go/scanner |
Package scanner implements a scanner for Go source text. |
| go/token |
Package token defines constants representing the lexical tokens of the Go programming language and basic operations on tokens (printing, predicates). |
| go/types |
Package types declares the data types and implements the algorithms for type-checking of Go packages. |
| hash |
Package hash provides interfaces for hash functions. |
| hash/adler32 |
Package adler32 implements the Adler-32 checksum. |
| hash/crc32 |
Package crc32 implements the 32-bit cyclic redundancy check, or CRC-32, checksum. |
| hash/crc64 |
Package crc64 implements the 64-bit cyclic redundancy check, or CRC-64, checksum. |
| hash/fnv |
Package fnv implements FNV-1 and FNV-1a, non-cryptographic hash functions created by Glenn Fowler, Landon Curt Noll, and Phong Vo. |
| html |
Package html provides functions for escaping and unescaping HTML text. |
| html/template |
Package template (html/template) implements data-driven templates for generating HTML output safe against code injection. |
| image |
Package image implements a basic 2-D image library. |
| image/color |
Package color implements a basic color library. |
| image/color/palette |
Package palette provides standard color palettes. |
| image/draw |
Package draw provides image composition functions. |
| image/gif |
Package gif implements a GIF image decoder and encoder. |
| image/jpeg |
Package jpeg implements a JPEG image decoder and encoder. |
| image/png |
Package png implements a PNG image decoder and encoder. |
| index/suffixarray |
Package suffixarray implements substring search in logarithmic time using an in-memory suffix array. |
| io |
Package io provides basic interfaces to I/O primitives. |
| io/ioutil |
Package ioutil implements some I/O utility functions. |
| log |
Package log implements a simple logging package. |
| log/syslog |
Package syslog provides a simple interface to the system log service. |
| math |
Package math provides basic constants and mathematical functions. |
| math/big |
Package big implements arbitrary-precision arithmetic (big numbers). |
| math/bits |
Package bits implements bit counting and manipulation functions for the predeclared unsigned integer types. |
| math/cmplx |
Package cmplx provides basic constants and mathematical functions for complex numbers. |
| math/rand |
Package rand implements pseudo-random number generators. |
| mime |
Package mime implements parts of the MIME spec. |
| mime/multipart |
Package multipart implements MIME multipart parsing, as defined in RFC 2046. |
| mime/quotedprintable |
Package quotedprintable implements quoted-printable encoding as specified by RFC 2045. |
| net |
Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| net/http |
Package http provides HTTP client and server implementations. |
| net/http/cgi |
Package cgi implements CGI (Common Gateway Interface) as specified in RFC 3875. |
| net/http/cookiejar |
Package cookiejar implements an in-memory RFC 6265-compliant http.CookieJar. |
| net/http/fcgi |
Package fcgi implements the FastCGI protocol. |
| net/http/httptest |
Package httptest provides utilities for HTTP testing. |
| net/http/httptrace |
Package httptrace provides mechanisms to trace the events within HTTP client requests. |
| net/http/httputil |
Package httputil provides HTTP utility functions, complementing the more common ones in the net/http package. |
| net/http/pprof |
Package pprof serves via its HTTP server runtime profiling data in the format expected by the pprof visualization tool. |
| net/mail |
Package mail implements parsing of mail messages. |
| net/rpc |
Package rpc provides access to the exported methods of an object across a network or other I/O connection. |
| net/rpc/jsonrpc |
Package jsonrpc implements a JSON-RPC 1.0 ClientCodec and ServerCodec for the rpc package. |
| net/smtp |
Package smtp implements the Simple Mail Transfer Protocol as defined in RFC 5321. |
| net/textproto |
Package textproto implements generic support for text-based request/response protocols in the style of HTTP, NNTP, and SMTP. |
| net/url |
Package url parses URLs and implements query escaping. |
| os |
Package os provides a platform-independent interface to operating system functionality. |
| os/exec |
Package exec runs external commands. |
| os/signal |
Package signal implements access to incoming signals. |
| os/user |
Package user allows user account lookups by name or id. |
| path |
Package path implements utility routines for manipulating slash-separated paths. |
| path/filepath |
Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
| plugin |
Package plugin implements loading and symbol resolution of Go plugins. |
| reflect |
Package reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types. |
| regexp |
Package regexp implements regular expression search. |
| regexp/syntax |
Package syntax parses regular expressions into parse trees and compiles parse trees into programs. |
| runtime |
Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |
| runtime/cgo |
Package cgo contains runtime support for code generated by the cgo tool. |
| runtime/debug |
Package debug contains facilities for programs to debug themselves while they are running. |
| runtime/pprof |
Package pprof writes runtime profiling data in the format expected by the pprof visualization tool. |
| runtime/race |
Package race implements data race detection logic. |
| runtime/trace |
Package trace contains facilities for programs to generate traces for the Go execution tracer. |
| sort |
Package sort provides primitives for sorting slices and user-defined collections. |
| strconv |
Package strconv implements conversions to and from string representations of basic data types. |
| strings |
Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync |
Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| sync/atomic |
Package atomic provides low-level atomic memory primitives useful for implementing synchronization algorithms. |
| syscall |
Package syscall contains an interface to the low-level operating system primitives. |
| testing |
Package testing provides support for automated testing of Go packages. |
| testing/iotest |
Package iotest implements Readers and Writers useful mainly for testing. |
| testing/quick |
Package quick implements utility functions to help with black box testing. |
| text/scanner |
Package scanner provides a scanner and tokenizer for UTF-8-encoded text. |
| text/tabwriter |
Package tabwriter implements a write filter (tabwriter.Writer) that translates tabbed columns in input into properly aligned text. |
| text/template |
Package template implements data-driven templates for generating textual output. |
| text/template/parse |
Package parse builds parse trees for templates as defined by text/template and html/template. |
| time |
Package time provides functionality for measuring and displaying time. |
| unicode |
Package unicode provides data and functions to test some properties of Unicode code points. |
| unicode/utf16 |
Package utf16 implements encoding and decoding of UTF-16 sequences. |
| unicode/utf8 |
Package utf8 implements functions and constants to support text encoded in UTF-8. |
| unsafe |
Package unsafe contains operations that step around the type safety of Go programs. |