Text processing/2: Difference between revisions

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This version does validation with a single ~~Perl 6~~ regex that is much more readable than the typical regex, and arguably expresses the data structure more straightforwardly.

This version does validation with a single Raku regex that is much more readable than the typical regex, and arguably expresses the data structure more straightforwardly.

Here we use normal quotes for literals, and <tt>\h</tt> for horizontal whitespace.

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The final line simply greps out the pairs from the hash whose value is an array with more than 1 element. (Those values that are not arrays nevertheless have a <tt>.elems</tt> method that always reports <tt>1</tt>.) The <tt>.pairs</tt> is merely there for clarity; grepping a hash directly has the same effect.

Note that we sort the pairs after we've grepped them, not before; this works fine in ~~Perl 6~~, sorting on the key and value as primary and secondary keys. Finally, pairs and arrays provide a default print format that is sufficient without additional formatting in this case.

Note that we sort the pairs after we've grepped them, not before; this works fine in Raku, sorting on the key and value as primary and secondary keys. Finally, pairs and arrays provide a default print format that is sufficient without additional formatting in this case.

<lang perl6>my $good-records;