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Left Hand Pointer

ASCII 39

M[UMPS] by Example

Right Hand Pointer

Apostrophe, also known as foot sign ("'")

ASCII code 39.

Many people call this character 'single quote'. In this document, the character ' is called apostrophe, and the character " is called quotes.

This character may be used as a unary 'not' operator.
If '(X>2)

This character may be used to negate the meaning of other operators. The following pairs of expression are equivalent by definition:

Is equal to: X'=2 is the same as '(X=2)
Is greater than: X'>2 is the same as '(X>2)
Is less than: X'<2 is the same as '(X<2)
Is less than or equal to: X'<=2 is the same as '(X<=2)
Is greater than or equal to: X'>=2 is the same as '(X>=2)
Matches pattern: X'?2N is the same as '(X?2N)
Contains: X'[2 is the same as '(X[2)
Follows: X']2 is the same as '(X]2)
Follows or equal to: X']=2 is the same as '(X]=2)
Collates after: X']]2 is the same as '(X]]2)
Collates after or equal to: X']]=2 is the same as '(X]]=2)

Button for 1977 Button for 1984 Button for 1990 Button for 1995 Button for MDC Button for notes Button for examples

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 28-Nov-2011, 20:03:46 .

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