diff options
| -rw-r--r-- | calc.go | 5 |
1 files changed, 2 insertions, 3 deletions
@@ -69,10 +69,9 @@ func (c *Calculator) performOperation(operator byte) error { // 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 + if rhs, err := c.parseBuffer(); err == nil { lhs, err = c.stack.pop() - return lhs, rhs, nil + return lhs, rhs, err } else if stk, err := c.stack.pop(); err == nil { rhs = stk if lhs, err = c.stack.pop(); err == nil { |