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September 2017 Update

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Ingy döt Net 2017-09-23 10:01:46 +02:00
parent bba7bfd280
commit ba8067c3b7
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27
Task/Natural-sorting/Perl-6/natural-sorting-1.pl6
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# Sort groups of digits in number order. Sort by order of magnitude then lexically.
sub naturally ($a) { $a.lc.subst(/(\d+)/, ->$/ {0~$0.chars.chr~$0},:g) ~"\x0"~$a }
# Collapse multiple ws characters to a single.
sub collapse ($a) { $a.subst( / ( \s ) $0+ /, -> $/ { $0 }, :g ) }
# Convert all ws characters to a space.
sub normalize ($a) { $a.subst( / ( \s ) /, ' ', :g ) }
# Ignore common leading articles for title sorts
sub title ($a) { $a.subst( / :i ^ ( a | an | the ) >> \s* /, '' ) }
# Decompose ISO-Latin1 glyphs to their base character.
sub latin1_decompose ($a) {
my %tr = <
Æ AE æ ae Þ TH þ th Ð TH ð th ß ss À A Á A Â A Ã A Ä A Å A à a á a
â a ã a ä a å a Ç C ç c È E É E Ê E Ë E è e é e ê e ë e Ì I Í I Î
I Ï I ì i í i î i ï i Ò O Ó O Ô O Õ O Ö O Ø O ò o ó o ô o õ o ö o
ø o Ñ N ñ n Ù U Ú U Û U Ü U ù u ú u û u ü u Ý Y ÿ y ý y
>;
# Would probably be better implemented as
# $a.trans( [%tr.keys] => [%tr.values] );
# but the underlying Parrot VM leaks through in current Rakudo.
my $re = '<[' ~ %tr.keys.join('|') ~ ']>';
$a.subst(/ (<$re>) /, -> $/ { %tr{$0} }, :g)
}

79
Task/Natural-sorting/Perl-6/natural-sorting-2.pl6
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my @tests = (
[
"Task 1a\nSort while ignoring leading spaces.",
[
'ignore leading spaces: 1', ' ignore leading spaces: 4',
' ignore leading spaces: 3', ' ignore leading spaces: 2'
],
{.trim} # builtin method.
],
[
"Task 1b\nSort while ignoring multiple adjacent spaces.",
[
'ignore m.a.s spaces: 3', 'ignore m.a.s spaces: 1',
'ignore m.a.s spaces: 4', 'ignore m.a.s spaces: 2'
],
{.&collapse}
],
[
"Task 2\nSort with all white space normalized to regular spaces.",
[
"Normalized\tspaces: 4", "Normalized\xa0spaces: 1",
"Normalized\x20spaces: 2", "Normalized\nspaces: 3"
],
{.&normalize}
],
[
"Task 3\nSort case independently.",
[
'caSE INDEPENDENT: 3', 'casE INDEPENDENT: 2',
'cASE INDEPENDENT: 4', 'case INDEPENDENT: 1'
],
{.lc} # builtin method
],
[
"Task 4\nSort groups of digits in natural number order.",
[
<Foo100bar99baz0.txt foo100bar10baz0.txt foo1000bar99baz10.txt
foo1000bar99baz9.txt 201st 32nd 3rd 144th 17th 2 95>
],
{.&naturally}
],
[
"Task 5 ( mixed with 1, 2, 3 & 4 )\n"
~ "Sort titles, normalize white space, collapse multiple spaces to\n"
~ "single, trim leading white space, ignore common leading articles\n"
~ 'and sort digit groups in natural order.',
[
'The Wind in the Willows 8', ' The 39 Steps 3',
'The 7th Seal 1', 'Wanda 6',
'A Fish Called Wanda 5', ' The Wind and the Lion 7',
'Any Which Way But Loose 4', '12 Monkeys 2'
],
{.&normalize.&collapse.trim.&title.&naturally}
],
[
"Task 6, 7, 8\nMap letters in Latin1 that have accents or decompose to two\n"
~ 'characters to their base characters for sorting.',
[
<apple Ball bald car Card above Æon æon aether
niño nina e-mail Évian evoke außen autumn>
],
{.&latin1_decompose.&naturally}
]
);
for @tests -> $case {
my $code_ref = $case.pop;
my @array = $case.pop.list;
say $case.pop, "\n";
say "Standard Sort:\n";
.say for @array.sort;
say "\nNatural Sort:\n";
.say for @array.sort: {.$code_ref};
say "\n" ~ '*' x 40 ~ "\n";
}