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authorLouis Pilfold <louis@lpil.uk>2024-02-15 12:18:17 +0000
committerLouis Pilfold <louis@lpil.uk>2024-02-19 18:18:04 +0000
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+<p>
+ Alternative patterns can be given for a case clause using the
+ <code>|</code> operator. If any of the patterns match then the clause matches.
+</p>
+<p>
+ If a pattern defines a variable then all of the alternative patterns for that
+ clause must also define a variable with the same name and same type.
+</p>
+<p>
+ Currently it is not possible to have nested alternative patterns, so the
+ pattern <code>[1 | 2 | 3]</code> is not valid.
+</p>