modash/moslice/find.go

package moslice

func Contains[T comparable](ts []T, needle T) bool {
	for _, t := range ts {
		if t == needle {
			return true
		}
	}
	return false
}

func FirstWhere[T any](ts []T, predicate func(t T) bool) T {
	var zeroT T

	for _, t := range ts {
		if predicate(t) {
			return t
		}
	}
	return zeroT
}

// FirstIndexWhere returns the index of the first element in the slice that satisfies the predicate. An empty slice will return -1
func FirstIndexWhere[T any](ts []T, predicate func(t T) bool) int {
	for i, t := range ts {
		if predicate(t) {
			return i
		}
	}
	return -1
}

func FindWhere[T any](ts []T, predicate func(t T) bool) (T, bool) {
	var zeroT T

	for _, t := range ts {
		if predicate(t) {
			return t, true
		}
	}
	return zeroT, false
}

func FindWithIndexWhere[T any](ts []T, predicate func(t T) bool) (T, int, bool) {
	var zeroT T

	for i, t := range ts {
		if predicate(t) {
			return t, i, true
		}
	}
	return zeroT, 0, false
}

// AnyWhere returns true if any element in the slice satisfies the predicate. An empty slice will return false
func AnyWhere[T any](ts []T, predicate func(t T) bool) bool {
	for _, t := range ts {
		if predicate(t) {
			return true
		}
	}
	return false
}

// AllWhere returns true if all the element in the slice satisfies the predicate. An empty slice will return false
func AllWhere[T any](ts []T, predicate func(t T) bool) bool {
	if len(ts) == 0 {
		return false
	}
	for _, t := range ts {
		if !predicate(t) {
			return false
		}
	}
	return true
}