JAVA [[a-z]&&[^aeiou]] equivalence

vincentaxhe has asked for the wisdom of the Perl Monks concerning the following question:

It's easy to guess what

[[a-z]&&[^aeiou]]
[download]

try to match, How perl do such thing, it's not included in primary perl pattern match knowledge.

Comment on JAVA [[a-z]&&[^aeiou]] equivalence Download Code

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Re: JAVA [[a-z]&&[^aeiou]] equivalence by choroba (Cardinal) on Jul 10, 2024 at 08:59 UTC
You need at least Perl 5.18 to use regex sets: `#!/usr/bin/perl use warnings; use strict; use experimental qw{ regex_sets }; my @match = grep /(?[ [^aeiou] & [a-z] ])/, map chr, 0 .. 255; print "match = @match\n";` [download] Output: `match = b c d f g h j k l m n p q r s t v w x y z` [download] `map{substr$_->[0],$_->[1]\|\|0,1}[\\|\|{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^ARGV,3]`	[reply] [d/l] [select]
Re^2: JAVA [[a-z]&&[^aeiou]] equivalence by Arunbear (Prior) on Jul 10, 2024 at 10:10 UTC
And in 5.36 they were upgraded to non-experimental.	[reply]
Re^2: JAVA [[a-z]&&[^aeiou]] equivalence by Discipulus (Canon) on Jul 10, 2024 at 10:15 UTC
Hello, nice info choroba. Glancing the doc you linked the following is even neater to my eyes: `my @match = grep /(?[ [a-z] - [aeiou] ])/, map chr, 0 .. 255;` [download] L* There are no rules, there are no thumbs.. Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.	[reply] [d/l]
Re^2: JAVA [[a-z]&&[^aeiou]] equivalence by parv (Parson) on Jul 10, 2024 at 09:46 UTC
Neat; learned something(regex sets).	[reply]
Re^2: JAVA [[a-z]&&[^aeiou]] equivalence by vincentaxhe (Beadle) on Jul 10, 2024 at 09:54 UTC
great!	[reply]
Re: JAVA [[a-z]&&[^aeiou]] equivalence by tybalt89 (Monsignor) on Jul 10, 2024 at 05:47 UTC
`#!/usr/bin/perl use strict; # https://perlmonks.org/?node_id=11160494 use warnings; $SIG{__WARN__} = sub { die @_ }; my @match = grep /(?=[^aeiou])[a-z]/, map chr, 0 .. 255; print "match = @match\n";` [download] Outputs: `match = b c d f g h j k l m n p q r s t v w x y z` [download]	[reply] [d/l] [select]
Re^2: JAVA [[a-z]&&[^aeiou]] equivalence by vincentaxhe (Beadle) on Jul 10, 2024 at 06:48 UTC
it's a good approach,seems informal, I wonder is there a better way.	[reply]
Re^3: JAVA [[a-z]&&[^aeiou]] equivalence by hippo (Archbishop) on Jul 10, 2024 at 12:55 UTC
Perl is intentionally informal. This is one of its greatest strengths. 🦛	[reply]
Re^4: JAVA [[a-z]&&[^aeiou]] equivalence by LanX (Saint) on Jul 10, 2024 at 14:22 UTC
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Re: JAVA [[a-z]&&[^aeiou]] equivalence by hippo (Archbishop) on Jul 10, 2024 at 12:57 UTC
It's easy to guess Maybe or maybe not. Take out the guesswork. How to ask better questions using Test::More and sample data 🦛	[reply]
Re: JAVA [[a-z]&&[^aeiou]] equivalence by LanX (Saint) on Jul 10, 2024 at 13:09 UTC
> It's easy to guess what `[[a-z]&&[^aeiou]]` try to match, No, it's not, if you want good answers, please ask good questions. See also SSCCE! compare tybalt's reply in this respect, he shows input and expected output. This is not a Java board. Why haven't you at least linked to the correct Java documentation? > How perl do such thing There is more than one way to do it The details depend on it Cheers Rolf _{(addicted to the Perl Programming Language :) see Wikisyntax for the Monastery}	[reply] [d/l]
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