Structs are already comparable, but all fields must be the same: https://go.dev/play/p/XwhSz4DEDwL
I think your solution with function 'eq' is fine. You can see the same thing in the standard library in slices.CompactFunc and slices.EqualFunc https://pkg.go.dev/slices#CompactFunc https://pkg.go.dev/slices#EqualFunc For the case of "ordered" rather than "comparable", have a look at slices.BinarySearchFunc and related functions. On Thursday, 13 July 2023 at 09:29:38 UTC+1 Mark wrote: > I have a package which has a function `Do[T comparable](a, b []T) Result`. > I have a struct: > ```go > type N struct { > x int > y int > t string > } > ``` > Is it possible to make `N` comparable; in particular by a field of my > choice, e.g., `t`? > > Or will I have to make, say, `DoFunc(a, b []N, eq func(i, j N) bool) > Result` with, say, > `func eq(i, j N) { return i.t == j.t }`? > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/golang-nuts/a697e28e-4d38-4c1a-b0b7-dccecb1c4309n%40googlegroups.com.
