OpenEdge Development:<br />Progress 4GL Reference + Unary positive operator

Release 10.1A: OpenEdge Development:
Progress 4GL Reference

+ Unary positive operator

Preserves the positive or negative value of a numeric expression. Do not confuse this operator with the addition operator that you use to add expressions together.

Syntax
+ expression 
expression
An expression whose value is numeric.
Example

In this example, the sign of credit-limit is preserved as is the sign of the sum of
credit-limit + 100. The unary positive is not necessary; it is used simply to document the procedure.
r-unpos.p
DEFINE VARIABLE old-max LIKE credit-limit LABEL "Old Limit".

FOR EACH customer:
  old-max =+ credit-limit.
  credit-limit =+(credit-limit + 100).
  DISPLAY name old-max credit-limit.
END. 