elaborate operands() comment

1 files changed, 1 insertions, 1 deletions

diff --git a/calc.go b/calc.go
index 689243c..e9b46d1 100644
--- a/calc.go
+++ b/calc.go
@@ -67,7 +67,7 @@ func (c *Calculator) performOperation(operator byte) error {
 	return nil
 }
 
-// operands returns the operands of an arithmetic operation.
+// operands returns the left and right operands, or error if there are not enough.
 func (c *Calculator) operands() (lhs, rhs float64, err error) {
 	if buf, err := c.parseBuffer(); err == nil {
 		rhs = buf