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| ☜ | Not OperatorM[UMPS] by Example | ☞ | ||||
Introduced in the 1977 ANSI M[UMPS] language standard.
| Reference | Value | |
|---|---|---|
| '12345 | 0 (false) | |
| '0 | 1 (true) | |
| '"Apples" | 1 (true) |
The logical or Boolean value of X:
| Reference | Value | |
|---|---|---|
| ''X | 0 or 1 |
The exclusive or of two values:
| Reference | Value | |
|---|---|---|
| 'X'='Y | X xor Y |
This operator can also be used to modify the meaning of other operators:
'= is not equal to
'> is not greater than, i.e. is less than or equal to
'< is not less than, i.e. is greater than or equal to
'? does not match the pattern
'[ does not contain
'] does not follow
'& not and
'! not or
Added in 1995:
']] does not collate after
To be added in a future standard:
'<= is not less than or equal to, i.e. is greater than
'>= is not greater than or equal to, i.e. is less than
']= does not follow and is not equal to
']]= does not collate after and is not equal to
'!! not exclusive or
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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.
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 16-Nov-2023, 11:56:08.
For comments, contact Ed de Moel (demoel@jacquardsystems.com)