Don't panic if the first expression is @

I'm just learning go, so if I did something obviously stupid lemme know.
alfredxing · Mar 1, 2016 · 395d17c · 395d17c
1 parent 1a308a3
commit 395d17c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/compute/compute.go b/compute/compute.go
@@ -28,7 +28,7 @@ ScanLoop:
 	for {
 		_, tok, lit := s.Scan()
 
-		if lit != "@" && back > -1 {
+		if lit != "@" && back > -1 && len(resHistory) > 0 {
 			floats.Push(getHistory(back))
 			if prev == token.RPAREN || constants.IsConstant(prev.String()) {
 				evalUnprecedenced("*", ops, floats)