Expression
Executes an arithmetic or logical expression.
Takes exactly two operands.
For summarization of more than two operands, see the Sum action.
Syntax:
Result = Left_Operand operator Right_OperandThis table shows the arithmetic operators:
| Arithmetic operator | Operation |
|---|---|
| + | A + B |
| - | A - B |
| * | A * B |
| / | A / B |
This table shows the logical operators:
| Logical operator | Operation |
|---|---|
| and | A and B |
| or | A or B |
This table shows the data types of the operation results for divisions:
| A | B | Operation result (A / B) |
|---|---|---|
| long | long | long |
| long | double | double |
| double | long | double |
| double | double | double |
Note: When the operation result is assigned to the result, a type conversion may occur and cause side effects.
This table shows how the operation result is, possibly, converted to match the expression result type:
| Result | Operation | |
|---|---|---|
| long | long | unchanged |
| long | double | truncated |
| double | long | unchanged |
| double | double | unchanged |
Examples:
left value = operation (=right value)
| Operation | Right value | Left value | |
|---|---|---|---|
| Operation result | As long | As double | |
| 3 / 2 | 1 | 1 | 1.5 |
| 3.0 / 2 | 1.5 | 1 | 1.5 |
| 6.3 / 2.1 | 3.0 | 3 | 3.0 |
Fields in the editor
- Result
- The field/variable to store the expression result.
- Left operand
- The left operand of the expression.
- Operator
- The operator of the expression: +, -, /, *, and, or.
- Right operand
- The right operand of the expression.
Validations
- If Field is selected, the specified field must exist in the current session.
- If Variable is selected, the specified variable must be declared.