ABL has four compound assignment operators (+=, -=, *=, and /=), which can be used to perform an operation and assign a value, using a shorthand notation. These assignment operators make your code more concise and easier to read and understand. Supported operations include addition (numeric and date-based) and concatenation, subtraction (numeric and date-based), multiplication, and division.

The following table compares the syntax for each assignment operator with the equivalent basic syntax, and notes which types of operations are supported.

Operator Assignment operator syntax Equivalent basic syntax Supported operations
+= field += expression field = field + (expression) Concatenation, numeric and date-based addition
-= field -= expression field = field - (expression) Numeric and date-based subtraction
*= field *= expression field = field * (expression) Numeric multiplication
/= field /= expression field = field / (expression) Numeric division
See the ABL Reference entries for more information: