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

relation

Draft MDC Standard

☞

7.2.2.1 Relational operator relation

    relation::= │
│
│
│
│
│
│
│
│
│
│
│		 =
==
<
<=
>
>=
[
]
]=
]]
]]=		 │
│
│
│
│
│
│
│
│
│
│
│

The operators =, ==, <, <=, >, >=, [, ], ]=, ]], and ]]= produce the truth value 1 if the relation between their operands which they express is true, and 0 otherwise. The dual operators 'relation are defined by:

A 'relation B has the same value as '(A relation B).

Editor’s note:
The term "dual" was introduced into the standard in a day and age that all relational operators were single characters, and indicated that the described "combined" operator would have two characters. Suggest to replace the word "dual" with "multi-character".
Button for 1977 Button for 1984 Button for 1990 Button for 1995 Button for MDC Button for notes Button for examples

Copyright © Standard Documents; 1977-2024 MUMPS Development Committee;
Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 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 15-Nov-2023, 13:17:38.

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