☜	$DATA 1984 Version of ANSI Standard					☞

3.2.8 Functions function

$D[ATA]( glvn )

returns a nonnegative integer which is a characterization of the variable named. The value of the integer is p+d, where:

• d = 1 if the named variable has a defined value (that is, it exists); d = 0 otherwise;
• p = 10 if either:
  1. The named variable contains no subscripts, and there exists a subscripted variable with the same name, or
  2. The named variable contains n subscripts, and there exists a subscripted variable with m > n subscripts whose first n subscript values are the same as the values of those in the named variable;
• p = 0 otherwise.

See also the transition diagram for $Data.

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Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.

This page most recently updated on 14-Nov-2023, 21:30:56.

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