My opinion:
my $tmp = “rrccllrrc”; Expected output :
$tmp = “right right center center left left right right center”; #End should not be spaced definitely. My code:< /p>
$tmp=~s/c
Tag: perl
Regular expression – how to determine which alternative items in the Perl regular expression mode?
I have a list of regular expressions (about 10-15) and I need to match some text. Matching them one by one in a loop is too slow. However, I did not write my own state machine To match all regular
Regular expression – Assess postal code input to Perl array
I have an array containing the first 2 characters of the postal code area in Perl, as shown below:
@acceptedPostcodes = (“CV”, “LE”, “CM”, “CB”, “EN”, “SG”, “NN”, “MK”, ”LU”, “PE”, “ST”, ”
Regular expression – replacing characters in Perl
I am trying to double all the vowels in each word. For example:
$string=”if it rains, cover with umbrella”; This is the code I wrote, but I did not get the correct output.
$string=~s/a
Regular expression – overlapping text replacement using Perl regular expression
I have a text file containing a bunch of sentences. The sentences contain spaces (spaces, tabs, new lines) to separate words composed of letters and/or numbers.
I want to find the word “123” or “
Regular expression – delete comments using Perl
Is there any regular expression that can remove all comments in a given C program // and / ** / var from perl?
Given a multi-line program, it should use regular expressions to remove comments
Regular expression – Perl if statement confusion
This code is an if statement; I want to test whether $rtgene contains trn.
I tested the code with $rtgene = nad3:
if ($rtgene!~/trn/){
$end=$data[$i][0]+100;
}
else{< br />$end =$data[$i][1]
Performance – When I use a thread, why will my Perl script slowly decompress the file?
So I run perl 5.10 on core 2 duo macbook pro compiled with thread support: usethreads = define, useithreads = define. I have a simple script to read 4 gzip files , Each file contains 750,000 lines.