// Package coll provides generic collection types and functions
package coll

func Map[T, V any](c Vector[T], f func(T) V) Vector[V] {
	out := make([]V, len(c))
	for index := 0; index < len(c); index++ {
		out[index] = f(c[index])
	}

	return From(out)
}

func Filter[T any](v Vector[T], f func(T) bool) Vector[T] {
	out := WithCap[T](len(v))
	for _, t := range v {
		if f(t) {
			out = out.Push(t)
		}
	}
	return out
}

func Take[T any](v Vector[T], howMany int) Vector[T] {
	if len(v) == 0 {
		return New[T]()
	}
	if len(v) < howMany {
		howMany = len(v)
	}
	return From(v[:howMany-1])
}

func Any[T any](v Vector[T], f func(T) bool) bool {
	for _, t := range v {
		if f(t) {
			return true
		}
	}
	return false
}

type numeric interface {
	~int | ~int8 | ~int16 | ~int32 | ~int64 | ~uint | ~uint8 | ~uint16 | ~uint32 | ~uint64 | ~float32 | ~float64
}

func Min[T numeric](v Vector[T]) T {
	var min T
	if len(v) == 0 {
		return min
	}
	min = v[0]
	for _, t := range v {
		if min > t {
			min = t
		}
	}
	return min
}

func Max[T numeric](v Vector[T]) T {
	var max T
	for _, t := range v {
		if max < t {
			max = t
		}
	}

	return max
}