There isn’t a standard library or built-in function that does both a
comparison and less operation.
For best performance you would write it for your type. For best generality
you would write a library function that takes two interface{} values and
converts them to the comparable types that work with == and < with an
exhaustive interface type switch.
The general case with interface{} would be a good community library, but I
don’t think it exists. Writing it for your type is straightforward.
type X int
func (x X) Cmp(y X) int {
if x == y {
return 0
} else if x < y {
return -1
} else {
return 1
}
}
// or a function instead of method
func CmpX(x, y X) int {
}
Matt
On Sunday, January 21, 2018 at 7:42:49 AM UTC-6, Peng Yu wrote:
>
> Hi, cmp() in python can return three values -1, 0, 1. Is there a
> comparison function in golang that also return three values? Thanks.
>
> https://docs.python.org/2/library/functions.html#cmp
>
> --
> Regards,
> Peng
>
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