Add 'LooksLike' function

timer.go

@@ -224,3 +224,32 @@ func (timer *Timer) HasTag(name string) bool {
 func (timer *Timer) GetTag(name string) string {
 	return timer.AdditionalTags[name]
 }
+
+// LooksLike returns true if the passed in timer looks like this
+func (timer *Timer) LooksLike(tmr *Timer) bool {
+	if tmr.StartDate != timer.StartDate ||
+		tmr.FinishDate != timer.FinishDate ||
+		tmr.Finished != timer.Finished ||
+		tmr.Notes != timer.Notes ||
+		len(tmr.Projects) != len(timer.Projects) ||
+		len(tmr.Contexts) != len(timer.Contexts) ||
+		len(tmr.AdditionalTags) != len(timer.AdditionalTags) {
+		return false
+	}
+	for _, prj := range tmr.Projects {
+		if !timer.HasProject(prj) {
+			return false
+		}
+	}
+	for _, ctx := range tmr.Contexts {
+		if !timer.HasContext(ctx) {
+			return false
+		}
+	}
+	for key, val := range tmr.AdditionalTags {
+		if !timer.HasTag(key) || timer.GetTag(key) != val {
+			return false
+		}
+	}
+	return true
+}