To build FlowForce expressions, you can use the operators listed below. Remember that you can test any expression by calling the built-in function 
system/compute.
Operator |
Description |
Example |
|---|---|---|
== |
Checks if a and b are equal (numerically equal for numbers, code-point equal for strings). |
2 + 3 == 5 computes true
2 + 3 == 4 computes false |
!= |
Checks if a and b are not equal. Note that the following three expressions are equivalent:
•a != b •not (a == b) •a <> b |
2 + 2 != 5 computes true
3 + 2 != 5 computes false |
< |
Checks if a is less than b (numerically less for numbers, see below for strings). |
4 < 5 computes true |
<= |
Checks if a is less than or equal to b. |
5 <= 5 computes true |
> |
Checks if a is greater than b. |
5 > 1 computes true |
>= |
Checks if a is greater than or equal to b. |
5 >= 5 computes true |
+ |
Addition. |
1 + 1 computes 2 |
- |
Subtraction. |
2 - 1 computes 1 |
* |
Multiplication. |
3 * 2 computes 6 |
/ |
Division. |
6 / 3 computes 2 |
String comparisons are performed as follows:
•The common prefix of the two strings are ignored (evaluated on code points).
•If both remaining strings are non-empty, their first code points are compared numerically.
•Empty strings are less than non-empty strings.
Use parentheses to instruct FlowForce to evaluate the expression inside first. For example:
2 + 3 * 4 computes 14
(2 + 3) * 4 computes 20
