You could define multiple types: type bySubtotal []directory type byName []directory
which have different Sort methods. You could also define a type that includes a func(d0, d1 directory) bool. The SortKeys example in the sort package docs (https://golang.org/pkg/sort/#example__sortMultiKeys) covers this. Personally, these days, I'd use sort.Slice and use it with two different comparison functions. On Tue, Nov 7, 2017 at 5:38 PM, rob <drrob...@gmail.com> wrote: > Hi. I am trying to sort a slice of a struct using one of two different > fields. > > type directory struct { > name string > subtotal int64 > } > > type dirslice []directory > > I want to sort a var of type dirslice by either name or subtotal. I > understand how to sort by one of those, by defining > > func (ds dirslice) Less(i, j int) bool { > return ds[i].subtotal < ds[j].subtotal > } > > func (ds dirslice) Swap(i, j int) { > ds[i], ds[j] = ds[j], ds[i] > } > > func (ds dirslice) Len() int { > return len(ds) > } > > But I'm struggling w/ how to have a method that can use a different version > of Swap, depending upon what I want. > > thanks, > > Rob Solomon > > -- > You received this message because you are subscribed to the Google Groups > "golang-nuts" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to golang-nuts+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "golang-nuts" group. To unsubscribe from this group and stop receiving emails from it, send an email to golang-nuts+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
