(lhs, rhs Expression)
| 538 | } |
| 539 | |
| 540 | func Minus(lhs, rhs Expression) Expression { |
| 541 | return &binaryExpression{ |
| 542 | lhs: lhs, |
| 543 | rhs: rhs, |
| 544 | operator: []byte(" - "), |
| 545 | } |
| 546 | } |
| 547 | |
| 548 | // in expression representation |
| 549 | type inExpression struct { |