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Left Hand Pointer

$QLENGTH

M[UMPS] by Example

Right Hand Pointer

Introduced in the 1995 ANSI M[UMPS] language standard.

This function returns information about the number of subscripts in a name-reference.

Assume that the following references are made in this order:

Reference   Value
$Data(^|"XXX"|ABC(1,2,3,4))   0
Set X=$NAme(^(5,6))   X="^|""XXX""|ABC(1,2,3,5,6)"
$QLength(X)   "5"

Note that this function only operates on the string that contains the name of a variable. The variable that is identified in this string is never accessed by this function. Therefore, this function only affects the naked indicator if the string in question is stored in a global variable.

For additional examples of this function, see the function $NAme.

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Copyright © Standard Documents; 1977-2017 MUMPS Development Committee;
Copyright © Examples: 1995-2017 Ed de Moel;
Copyright © Annotations: 2003-2017 Jacquard Systems Research.

The information in this page is NOT authoritative and subject to be modified at any moment.
Please consult the appropriate (draft) language standard for an authoritative definition.

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, 09:33:41 .

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