x

ASIS(argument)

where:

argument

Alphanumeric

Is the value to be evaluated. Supply the actual value, the name of a field that contains the value, or an expression that returns the value. An expression can call a function.

If you specify an alphanumeric literal, enclose it in single quotation marks. If you specify an expression, use parentheses as needed to ensure the correct order of evaluation.

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Example: Distinguishing Between a Space and a Zero

The first request does not use ASIS. No difference is detected between variables defined as a space and 0.

-SET &VAR1 = ' ';
-SET &VAR2 = 0;
-IF &VAR2 EQ &VAR1 GOTO ONE;
-TYPE VAR1 &VAR1 EQ VAR2 &VAR2 NOT TRUE
-QUIT
-ONE
-TYPE VAR1 &VAR1 EQ VAR2 &VAR2 TRUE

The output is:

VAR1 EQ VAR2 0 TRUE

The next request uses ASIS to distinguish between the two variables.

-SET &VAR1 = ' ';
-SET &VAR2 = 0;
-IF &VAR2 EQ ASIS(&VAR1) GOTO ONE;
-TYPE VAR1 &VAR1 EQ VAR2 &VAR2 NOT TRUE
-QUIT
-ONE
-TYPE VAR1 &VAR1 EQ VAR2 &VAR2 TRUE

The output is:

VAR1 EQ VAR2 0 NOT TRUE