Imports of package flag

PathSynopsis
errorsPackage errors implements functions to manipulate errors.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
ioPackage io provides basic interfaces to I/O primitives.
osPackage os provides a platform-independent interface to operating system functionality.
reflectPackage reflect implements run-time reflection, allowing a program to manipulate objects with arbitrary types.
sortPackage sort provides primitives for sorting slices and user-defined collections.
strconvPackage strconv implements conversions to and from string representations of basic data types.
timePackage time provides functionality for measuring and displaying time.