| Tag Link | -= Subtraction Assignment | Category | Symbol |
|---|---|---|---|
| Type | Symbol | Source Available | No |
| Support | Preferred | Version | 5.0 |
| Change | Unchanged | Data Source | Any |
| Output Type | None | Security | None |
| Implementation | LCAPI | Sets | Lasso 8.5, Lasso 8.0, Lasso 7.0, Lasso 6.0, Lasso 5.0 |
-= subtracts the value of the right parameter from the left parameter and sets the left parameter to the resulting value. The left parameter should be a variable that contains a string, decimal, or integer value.
This symbol performs mathematical subtraction if both parameters contain decimal or integer values. The result will be a decimal if either parameter is a decimal value.
This symbol deletes the substring defined by th right parameter from the left parameter if either parameter is a string value. The result is a string value.
Note: If the parameter on the right hand side of the symbol is a negative literal it should be surrounded by parentheses. For example, ($var -= (-1)).
[(Variable: 'Left_Parameter') -= Right Parameter]
<?LassoScript
(Variable: 'Left_Parameter') -= Right_Parameter;
?>
<?LassoScript
$Left_Parameter -= Right_Parameter;
?>
| Required Parameters | |
|---|---|
| Left_Parameter | The variable from which the value should be subtracted. |
| Right_Parameter | The value to be subtracted. |
To subtract a value from a variable:
Use the subtraction assignment symbol -=. The value will be subtracted from the symbol and no result will be returned to the format file. The following example subtracts 5 from the variable Result. The value of the variable is then displayed.
<?LassoScript
Variable: 'Result'=10;
$Result -= 5;
Output: $Result;
?>
5