lo/docs/data/core-minbyerr.md

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

name	slug	sourceRef	category	subCategory	playUrl	variantHelpers	similarHelpers	position	signatures
MinByErr	minbyerr	find.go#L349	core	find	https://go.dev/play/p/nvDYGS8q895	core#find#minbyerr	core#find#minby core#find#min core#find#minindex core#find#minindexby core#find#max core#find#maxby core#find#maxindex core#find#maxindexby	161	func MinByErr[T any](collection []T, comparison func(a T, b T) (bool, error)) (T, error)

Searches the minimum value of a collection using the given comparison function. Returns the first minimal value; zero value and nil error when empty.

If the comparison function returns an error, iteration stops and the error is returned.

type Point struct{ X int }
min, err := lo.MinByErr([]Point{{1}, {5}, {3}}, func(a, b Point) (bool, error) {
    return a.X < b.X, nil
})
// {1}, <nil>

Example with error:

type Point struct{ X int }
min, err := lo.MinByErr([]Point{{1}, {5}, {3}}, func(a, b Point) (bool, error) {
    if a.X == 5 {
        return false, fmt.Errorf("cannot compare with 5")
    }
    return a.X < b.X, nil
})
// {0}, error("cannot compare with 5")