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Core Minbyerr

docs/data/core-minbyerr.md

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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.

go
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:

go
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")