perl

[Solved] Why is Perl market position in server-side scripting so low, even less than Java? [closed]

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[ad_1] This article has a lot of details on how W3Techs gets their data: http://w3techs.com/blog/entry/usage_of_perl_for_websites_fell_below_1_percent As i did some analysis on this, let me summarize in short that the data presented by W3Techs is deeply flawed and extremely misleading. First off, it is important to know that they detect technologies of sites by running simple … Read more

[Solved] sum lines with similar substring [closed]

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[ad_1] We could match the substring starting from _ to the end of the string (.*$) in ‘IsomiR’ column and replace with ” using sub. We use that as the grouping variable. If we are doing this with dplyr, the summarise_each can be used for summing multiple columns. library(dplyr) df1 %>% group_by(IsomiR= sub(‘_.*$’, ”, IsomiR)) … Read more

[Solved] perl quick switch from quaternary to decimal

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[ad_1] Base 4 requires exactly 2 bits, so it’s easy to handle efficiently. my $uvsize = length(pack(‘J>’, 0)) * 8; my %base4to2 = map { $_ => sprintf(‘%2b’, $_) } 0..3; sub base4to10 { my ($s) = @_; $s =~ s/(.)/$base4to2{$1}/sg; $s = substr((“0” x $uvsize) . $s, -$uvsize); return unpack(‘J>’, pack(‘B*’, $s)); } This … Read more

[Solved] Perl set counter to match in loop

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[ad_1] If you only want to increment unless some condition is met, you should mention that in your code. Using the postfix foo() unless condition(); syntax means the condition will only refer to the previous statement, not the entire scope ( which would arguably be insane to parse ). So print ‘…’ unless $foo is … Read more

[Solved] Radio Button go to another file on Submit

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[ad_1] Here’s some high level code that might help. #!/usr/bin/perl use strict; use warnings; # Use functions from CGI.pm to make your life easier use CGI qw[header redirect param]; # Hash containing valid redirection values. my %valid_redirects = map { $_ => 1 } qw[process calendar location users find]; # Get the chosen option my … Read more

[Solved] Perl Script can’t use Tie::File

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Introduction [ad_1] Perl is a powerful scripting language that is used for a variety of tasks, including web development, system administration, and data manipulation. One of the most useful features of Perl is its ability to tie files together using the Tie::File module. This module allows you to access and manipulate data stored in a … Read more

[Solved] Perl Script can’t use Tie::File

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[ad_1] Your program is frankly a bit of a mess. You seem to be trying things in the hope that they work but without any real reasoning. I have refactored your code to do what I think you want below. Here are the main changes I have made You must always add use strict and … Read more

[Solved] Random flling the array – perl

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[ad_1] I’m assuming you meant “ten non-negative integers less than 60”. With possibility of repeats: my @rands = map { int(rand(60)) } 1..10; For example, $ perl -E’say join “,”, map { int(rand(60)) } 1..10;’ 0,28,6,49,26,19,56,32,56,16 <– 56 is repeated $ perl -E’say join “,”, map { int(rand(60)) } 1..10;’ 15,57,50,16,51,58,46,7,17,53 $ perl -E’say join … Read more

[Solved] GetOption PERL to Python

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[ad_1] There is a module in python called argparse. You can use the module to solve your problem. Code example : test.py import argparse import os commandLineArgumentParser = argparse.ArgumentParser() commandLineArgumentParser.add_argument(“-fname”, “–fname”, help=”first name”) commandLineArgumentParser.add_argument(“-lname”,”–lname”, help=”last name”) commandLineArguments = commandLineArgumentParser.parse_args() fname = commandLineArguments.fname lname = commandLineArguments.lname print “%s\n%s” %(fname,lname) Run example python test.py -fname ms -lname … Read more