I would definitely love to have a native given expression today. It does not mean that I believe it's likely, but certainly it's highly desirable.
given EXPR {
when EXPR { ... }
when EXPR { ... }
...
}
my sub get_data ($data) {
given $data {
when /^\d+$/ { return %var{""} = $_ }
when 'previous' { return %var{""} // fail NoData }
when %var { return %var{""} = %var{$_} }
default { die Err::BadData : msg=>"Don't understand $_"
+}
}
}
See
Apocalypse 4 and Exegesis 4
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