Imports of package constant

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
go/tokenPackage token defines constants representing the lexical tokens of the Go programming language and basic operations on tokens (printing, predicates).
mathPackage math provides basic constants and mathematical functions.
math/bigPackage big implements arbitrary-precision arithmetic (big numbers).
math/bitsPackage bits implements bit counting and manipulation functions for the predeclared unsigned integer types.
strconvPackage strconv implements conversions to and from string representations of basic data types.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.
unicode/utf8Package utf8 implements functions and constants to support text encoded in UTF-8.