Method Cap

src/internal/reflectlite/value.go:815–826

Cap returns the capacity of this value for arrays, channels and slices. For other types, it panics.

()

// Cap returns the capacity of this value for arrays, channels and slices.
// For other types, it panics.
func (v Value) Cap() int {
	switch v.typecode.Kind() {
	case Array:
		return v.typecode.Len()
	case Chan:
		return chancap(v.pointer())
	case Slice:
		return int((*sliceHeader)(v.value).cap)
	default:
		panic(&ValueError{Method: "Cap", Kind: v.Kind()})
	}
}

//go:linkname mapclear runtime.hashmapClear
func mapclear(p unsafe.Pointer)