serie

type Interfacer interface {
	Interface() interface{}
}

type NullBool struct {
	Bool  bool
	Valid bool
}

type NullFloat32 struct {
	Float32 float32
	Valid   bool
}

type NullFloat64 struct {
	Float64 float64
	Valid   bool
}

type NullInt struct {
	Int   int
	Valid bool
}

type NullInt32 struct {
	Int32 int32
	Valid bool
}

type NullInt64 struct {
	Int64 int64
	Valid bool
}

type NullString struct {
	String string
	Valid  bool
}

type NullTime struct {
	Time  time.Time
	Valid bool
}

type RawValue struct {
	Value interface{}
	Valid bool
}

type Serie interface {
	Type() reflect.Type
	All() []interface{}
	Get(at int) interface{}
	Slice() interface{}

	// Mutate
	Append(v ...interface{})
	Prepend(v ...interface{}) error
	Insert(at int, v ...interface{}) error
	Set(at int, v interface{}) error
	Delete(at int) error
	Grow(size int) error
	Shrink(size int) error
	Concat(serie ...Serie) error
	Clear()

	// Select
	Head(size int) Serie
	Tail(size int) Serie
	Subset(at, size int) Serie
	Filter(where interface{}) (Serie, error)
	Distinct() Serie

	// Copy
	EmptyCopy() Serie
	Copy() Serie

	// Sort
	sort.Interface
	Compare(i, j int) int
	SortAsc()
	SortDesc()
}