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| ☜ | $SELECT1984 Version of ANSI Standard | ☞ | ||||
$S[ELECT] ( L | tvexpr : expr | )
returns the value of the leftmost expr whose corresponding tvexpr is true. The process of evaluation consists of evaluating the tvexprs, one at a time in left-to-right order, until the first one is found whose value is true. The expr corresponding to this tvexpr (and no other) is evaluated and this value is made the value of $S. An error will occur if all tvexprs are false. Since only one expr is evaluated at any invocation of $S, that is the only expr which must have a defined value.
See also the transition diagram for $Select.
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Copyright © Examples: 1995-2024 Ed de Moel;
Copyright © Annotations: 2003-2008 Jacquard Systems Research
Copyright © Annotations: 2008-2024 Ed de Moel.
This page most recently updated on 15-Nov-2023, 13:13:02.
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