Re^3: ordering array of sentences

As usual in functional programming, read from right to left (or bottom to top):

The map changes the sentences to arrays of arrays. Each such an array has two elements: the word to sort on and the original sentence.

sort just sorts the arrays according to their first element, i.e. the sort word.

map transforms the arrays back to sentences.

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Comment on Re^3: ordering array of sentences

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Re^4: ordering array of sentences by welle (Beadle) on Nov 13, 2012 at 17:51 UTC
I got it. Thank you! In a very ugly Perl, I translated it so: `my @sentences1 = map { /(\w+)\s+searching/; [$1, $_] } @sentences +; my @sentences2 = sort { $a->[0] cmp $b->[0] } @sentences1; my @sentences3 = map {$_->[1]} @sentences2; foreach (@sentences3) { print $_; }` [download] ...just to lear Perl	[reply] [d/l]
Re^4: ordering array of sentences by welle (Beadle) on Nov 13, 2012 at 19:24 UTC
What if my @sentences has a more complicated structure? I get @sentences from querying a Sqlite database with the following: `$sentences = $dbh->selectall_arrayref("SELECT ID, sentence FROM texts +WHERE sentence REGEXP '(?i:$query)'");` [download] As one can see, the result is made of two elements (ID and sentence). How can I read/manipulate in the code provided by choroba only the second element "sentence", preserving at the end of the sorting operation the same structure ID/sentence?	[reply] [d/l]
Re^5: ordering array of sentences by afoken (Chancellor) on Nov 14, 2012 at 06:18 UTC
use `ORDER BY` in SQL to have the data delivered to perl in the expected order Schwartzian transform Alexander -- Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)	[reply] [d/l]