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Descendant

Introduced in the 1977 ANSI M[UMPS] language standard.

A variable has a name and optionally subscripts.

When two variables have the same name, and one has more subscripts than the other, while all subscipts that the one with lesser subscripts has occur in the other variable with the same variable, then the variable with more subscripts is called a descendant of the variable with less subscripts.

For example, assume that the following elements of Y are defined:

Y(0)=0
Y(1)=1
Y(1,2)=2
Y(1,2,3)=123

Then Y(1,2,3) is a descendant of Y, of Y(1) and of Y(1,2), but not of Y(0) and Y(1,2) is a descendant of Y and Y(1).

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Copyright © Standard Documents; 1977-2018 MUMPS Development Committee;
Copyright © Examples: 1995-2018 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2018 Ed de Moel.

Some specifications are "approved for inclusion in a future standard". Note that the MUMPS Development Committee cannot guarantee that such future standards will indeed be published.

This page most recently updated on 13-Sep-2014, 12:06:03 .

For comments, contact Ed de Moel (demoel@jacquardsystems.com)