errors | Package errors implements functions to manipulate errors. |
internal/oserror | Package oserror defines errors values used in the os package. |
io | Package io provides basic interfaces to I/O primitives. |
path | Package path implements utility routines for manipulating slash-separated paths. |
sort | Package sort provides primitives for sorting slices and user-defined collections. |
time | Package time provides functionality for measuring and displaying time. |
unicode/utf8 | Package utf8 implements functions and constants to support text encoded in UTF-8. |