impl ledger.Register.Between

ana/predictor.go

@@ -36,3 +36,13 @@ func NewInterestPredictor(namePattern string, currencyPattern string, apy float6
 		return result
 	}
 }
+
+func NewContributionPredictor(reg ledger.Register) Predictor {
+	monthlyRate := getMonthlyContributionRate(reg)
+	return func(given ledger.Balances, delta time.Duration) ledger.Balances {
+		panic(nil)
+	}
+}
+
+func getMonthlyContributionRate(reg ledger.Register) map[string]ledger.Balance {
+}