bytes | Package bytes implements functions for the manipulation of byte slices. |
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/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/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. |
io/ioutil | Package ioutil implements some I/O utility functions. |
log | Package log implements a simple logging package. |
os | Package os provides a platform-independent interface to operating system functionality. |
path/filepath | Package filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths. |
sort | Package sort provides primitives for sorting slices and user-defined collections. |
strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |