package container const ( // ChangeModify represents the modify operation. ChangeModify ChangeType = 0 // ChangeAdd represents the add operation. ChangeAdd ChangeType = 1 // ChangeDelete represents the delete operation. ChangeDelete ChangeType = 2 ) func (ct ChangeType) String() string { switch ct { case ChangeModify: return "C" case ChangeAdd: return "A" case ChangeDelete: return "D" default: return "" } }