Method ContainerLength

value.go:214–240

()

}

func (v Value) ContainerLength() (int, error) {
	switch v.Type().(type) {
	case *TypeSet, *TypeArray:
		if v.IsNull() {
			return 0, nil
		}
		var n int
		for it := v.ContainerIter(); !it.Done(); {
			it.Next()
			n++
		}
		return n, nil
	case *TypeMap:
		if v.IsNull() {
			return 0, nil
		}
		var n int
		for it := v.ContainerIter(); !it.Done(); {
			it.Next()
			it.Next()
			n++
		}
		return n, nil
	default:
		return -1, ErrNotContainer
	}
}

// IsNull returns true when v's underlying type is TypeNull.
func (v Value) IsNull() bool {