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Re^3: Regex \. help

by Loops (Curate)
on Nov 22, 2014 at 01:30 UTC ( [id://1108067]=note: print w/replies, xml ) Need Help??


in reply to Re^2: Regex \. help
in thread Regex \. help

Hi,

Yeah you're right about that. I confess to removing the non-capturing annotation for simplicity sake. Here's a slightly different version where the \d* isn't redundant:

my @t = qw( regex regex. regex.1 regex.12 regex.1a regex.a regex.abc r
+egex.a1 oregex.2 );
say s/^regex(?!\.[^\d])(\.\d*)?/|$&|/r for (@t);

[download]
|regex|
|regex.|
|regex.1|
|regex.12|
|regex.1|a
regex.a
regex.abc
regex.a1
oregex.2

[download]

Replies are listed 'Best First'.
Re^4: Regex \. help
by codz67 (Initiate) on Nov 24, 2014 at 19:59 UTC 
    #!/usr/bin/perl
@filename = `ls  | grep  "^regex\.[0-9]"`;
print @filename;

    ...

    [download]

    prints regex.1. I need it to print regex and regex.1:

    #!/usr/bin/perl
@filename = `ls  | grep  "^regex\.?[0-9]"`;
print @filename;

    [download]

    Doesnt print anything.

    Shouldnt the ? match the . zero or more times? If so why doesnt it print regex and regex.1 As for the .abc I need that to be excluded when it greps. So regex.abc and regex.xyz wont print.

    Thank you for the help so far, I am still stuck on making this work. I will continue to try to make this work, if anyone could assist further I would be very thankful.

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