engine/stack.go


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package engine

type Stack []*Card

func (s Stack) Contains(predicate func(c IsCard) bool) bool {
	for _, c := range s {
		if predicate(c) {
			return true
		}
	}
	return false
}

func (s Stack) Filter(predicate func(c IsCard) bool) Stack {
	res := make(Stack, 0, len(s))
	for _, c := range s {
		if predicate(c) {
			res = append(res, c)
		}
	}
	return res
}