Method Head

stack.go:137–154

Head returns the rest of the Stack from this Card up (excluding this Card). The slice is sorted vertically, starting with the top of the stack.

()

// Head returns the rest of the Stack from this Card up (excluding this Card). The slice is sorted vertically, starting with the top of the stack.
func (stack *Stack) Head() []*Card {
	rest := []*Card{}

	above := stack.Above
	tested := map[*Card]bool{}
	for above != nil {
		if _, exists := tested[above]; exists {
			break
		}
		rest = append(rest, above)
		tested[above] = true
		above = above.Stack.Above
	}

	sort.Slice(rest, func(i, j int) bool { return rest[i].Rect.Y < rest[j].Rect.Y })

	return rest
}

// Tail returns the rest of the Stack from this Card down (excluding this Card). The slice is sorted vertically, starting with the top of the stack.
func (stack *Stack) Tail() []*Card {