lo/docs/data/core-minindexbyerr.md

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

name	slug	sourceRef	category	subCategory	playUrl	signatures	variantHelpers	similarHelpers	position
MinIndexByErr	minindexbyerr	find.go#L404	core	find	https://go.dev/play/p/MUqi_NvTKM1	func MinIndexByErr[T any](collection []T, comparison func(a T, b T) (bool, error)) (T, int, error)	core#find#minindexbyerr	core#find#minindexby core#find#min core#find#minby core#find#minbyerr core#find#minindex core#find#max core#find#maxby core#find#maxbyerr core#find#maxindex core#find#maxindexby core#find#maxindexbyerr core#math#sum core#math#sumbyerr core#math#mean core#math#meanbyerr core#math#product core#math#productbyerr core#math#mode	171

Searches the minimum value using a comparison function and returns the value and its index. Returns (zero value, -1, nil) when empty. Stops iteration immediately when an error is encountered.

type Point struct{ X int }
value, idx, err := lo.MinIndexByErr([]Point{{1}, {5}, {3}}, func(a, b Point) (bool, error) {
    return a.X < b.X, nil
})
// value == {1}, idx == 0, err == nil

// Error case - stops on first error
_, _, err := lo.MinIndexByErr([]Point{{1}, {5}, {0}}, func(a, b Point) (bool, error) {
    if a.X == 0 || b.X == 0 {
        return false, fmt.Errorf("zero value not allowed")
    }
    return a.X < b.X, nil
})
// error("zero value not allowed")

// Error case on first comparison
_, _, err := lo.MinIndexByErr([]Point{{1}, {5}}, func(a, b Point) (bool, error) {
    return false, fmt.Errorf("comparison error")
})
// error("comparison error")