lo/docs/data/core-maxindexby.md

name, slug, sourceRef, category, subCategory, playUrl, variantHelpers, similarHelpers, position, signatures

name	slug	sourceRef	category	subCategory	playUrl	variantHelpers	similarHelpers	position	signatures
MaxIndexBy	maxindexby	find.go#L566	core	find	https://go.dev/play/p/5yd4W7pe2QJ	core#find#maxindexby	core#find#max core#find#maxby core#find#maxbyerr core#find#maxindex core#find#maxindexbyerr core#find#min core#find#minby core#find#minindex core#find#minindexby core#math#sum core#math#mean core#math#product core#math#mode	230	func MaxIndexBy[T any](collection []T, comparison func(a T, b T) bool) (T, int)

Returns the maximum value and its index using the given comparison function. Returns (zero value, -1) when the collection is empty.

type Point struct{ X int }
value, idx := lo.MaxIndexBy([]Point{{1}, {5}, {3}}, func(a, b Point) bool {
    return a.X > b.X
})
// value == {5}, idx == 1

Note: the comparison function is inconsistent with most languages, since we use the opposite of the usual convention.

See https://github.com/samber/lo/issues/129