Package goroot
In the call graph viewer below, each node
is a function belonging to this package
and its children are the functions it
calls—perhaps dynamically.
The root nodes are the entry points of the
package: functions that may be called from
outside the package.
There may be non-exported or anonymous
functions among them if they are called
dynamically from another package.
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token.
Functions may be omitted if they were
determined to be unreachable in the
particular programs or tests that were
analyzed.
func IsStandardPackage(goroot, compiler, path string) bool
IsStandardPackage reports whether path is a standard package,
given goroot and compiler.