package main import "github.com/nlopes/slack" type byTimestamp []slack.Message func (m byTimestamp) Len() int { return len(m) } func (m byTimestamp) Swap(i, j int) { m[i], m[j] = m[j], m[i] } func (m byTimestamp) Less(i, j int) bool { return m[i].Timestamp < m[j].Timestamp }