condition Return the result of evaluating a conditional expression

Uniface Underground -> Undocumented.Features.Only.

condition

The "official" features are described in the proc manual. This document contains only undocumented features

Name	condition Return the result of evaluating a conditional expression.
Synopsis	condition(Expression[,list])
Use	Allowed in form, service, and report components.
Description	You can use a second (and optional) parameter a associative list (id=value) that condition should use to evaluate the expression as variables and values. Tested in 7.2.03
Example	amount = 1500 limits = "MIN=$number(1000);MAX=$number(2000)" ; limits of amout in a list exp = "amount > MIN & amount < MAX" ; exp is a string with the expression if (condition(exp, limits)) message "The amount is correct" else message "Not between limits" endif
Note	The evaluation of condition is done using (by default) string types and this can have some problems : limits = "MIN=1000;MAX=2000" $1 = condition("20 < MIN",limits) In this case $1 is FALSE (0), because the condition evaluates the string "20" less than the string "1000" (ASCII values). In order to solve this you must assing the type to the value of the items as : limits = "MIN=$number(1000);MAX=$number(2000)" $1 = condition("20 < MIN",limits) This works fine!!! The $typed fuctions are : $string(value) $syntax(value) $number(value) $float(value) $boolean(value) $date(value) $datim(value) $time(value) $clock(value)