From 3581c1768c4d92bc1a06c1e2e3cd0b669c2da974 Mon Sep 17 00:00:00 2001
From: c9s <yoan@maicoin.com>
Date: Thu, 14 Oct 2021 14:22:07 +0800
Subject: [PATCH] fix SMA indicator value length check

---
 pkg/indicator/sma.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/indicator/sma.go b/pkg/indicator/sma.go
index 1d3c0a7b6..ee87cb17c 100644
--- a/pkg/indicator/sma.go
+++ b/pkg/indicator/sma.go
@@ -24,6 +24,9 @@ type SMA struct {
 }
 
 func (inc *SMA) Last() float64 {
+	if len(inc.Values) == 0 {
+		return 0.0
+	}
 	return inc.Values[len(inc.Values)-1]
 }