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| ☜ | $REVERSEDraft MDC Standard | ☞ | ||||
$RE[VERSE] ( expr )
See Clause 7 for the definition of expr.
This form returns a string whose characters are reversed in order compared to expr.
$REverse( EXPR ) is computationally equivalent to $$REV( EXPR ) which is defined by the following code:
REV(E) Q $Select(E="":"",1:$$REV($Extract(E,2,$Length(E)))_$Extract(E,1))
| Editor’s note: Since the above recursive algorithm cannot be executed on a system that conforms exactly to the portability requirements (120 Do levels, strings longer than 120 characters), suggest to change this to: REV(E) New i,r Set r="" For i=1:1:$Length(r) Set r=$Extract(e,i)_r Quit r |
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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.
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 14-Nov-2023, 21:32:36.
For comments, contact Ed de Moel (demoel@jacquardsystems.com)