errors | Package errors implements functions to manipulate errors. |
io | Package io provides basic interfaces to I/O primitives. |
math/big | Package big implements arbitrary-precision arithmetic (big numbers). |
os | Package os provides a platform-independent interface to operating system functionality. |
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. |
time | Package time provides functionality for measuring and displaying time. |