minby.go

package sliceP

import "github.com/clipperhouse/typewriter"

var minBy = &typewriter.Template{
	Name: "MinBy",
	Text: `
// MinBy returns an element of {{.SliceName}} containing the minimum value, when compared to other elements using a passed func defining ‘less’. In the case of multiple items being equally minimal, the first such element is returned. Returns error if no elements. See: http://clipperhouse.github.io/gen/#MinBy
func (rcv {{.SliceName}}) MinBy(less func({{.Type}}, {{.Type}}) bool) (result {{.Type}}, err error) {
	l := len(rcv)
	if l == 0 {
		err = errors.New("cannot determine the Min of an empty slice")
		return
	}
	m := 0
	for i := 1; i < l; i++ {
		if less(rcv[i], rcv[m]) {
			m = i
		}
	}
	result = rcv[m]
	return
}
`}