Hey all!
As a recent graduate seeking a junior developer position, I received an invitation for a job interview which included a Perl coding exercise. How can i make my code better? Additionally, are there recommended best practices for documenting my progress on this exercise? I never programmed in perl, so bare with me. Thanks a lot!!
here's the task:
- read the data from a .csv file
- store data in one hash
- outputs the data as HTML, sorted by company and within the company by name
here is my code:
#!/usr/bin/perl use strict; use warnings; use Text::CSV; my $csv_file = 'Bewerbungstest.csv'; open(my $fh, '<', $csv_file) or die "Could not open file '$csv_file' $!"; my $csv = Text::CSV->new({ binary => 1 }) or die "Cannot use CSV: ".Text::CSV->error_diag(); $csv->header($fh); # Hash Wert my %data_hash; while (my $row = $csv->getline($fh)) { my $pid = $row->[0]; # PID as key my $company = $row->[1]; # Company name as key my $last_name = $row->[2]; # Employee last name my $first_name = $row->[3]; # Employee first name push @{$data_hash{$company}}, [$pid, $last_name, $first_name]; } close($fh); # Sort the company names alphabetically foreach my $company (sort keys %data_hash) { @{$data_hash{$company}} = sort {$a->[1] cmp $b->[1]} @{$data_hash{$company}}; } # HTML Output open(HTML, '>', 'output.html') or die "Could not open file: $!"; print HTML "<html>\n"; print HTML "<head>\n"; print HTML "<title>Employee List</title>\n"; print HTML "</head>\n"; print HTML "<body>\n"; print HTML "<h1>User Liste</h1>\n"; print HTML "<table border='1'>\n"; print HTML "<tr><th>PID</th><th>Company</th><th>Last Name</th><th>First Name</th>\n"; foreach my $company (sort keys %data_hash) { foreach my $entry (@{$data_hash{$company}}) { my ($pid, $last_name, $first_name,) = @$entry; print HTML "<tr>\n"; print HTML "<td>$pid</td>\n"; print HTML "<td>$company</td>\n"; print HTML "<td>$last_name</td>\n"; print HTML "<td>$first_name</td>\n"; print HTML "</tr>\n"; } } print HTML "</table>\n"; print HTML "</body>\n"; print HTML "</html>\n"; close(HTML); print "HTML file erfolgreich generiert\n";
submitted by /u/stayin_alive23
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Data objects for login.
Changes for 0.02 - 2024-03-19T14:01:19+01:00
- Regen example file.
- Rewrite to new Data::HashType@0.04 with added 'valid_from' parameter.
Random hash type objects.
Changes for 0.03 - 2024-03-19T13:59:34+01:00
- Add support for Data::HashType@0.04.
find, build and install the bowtie2 tools
Changes for 0.01 - 2024-03-19T05:13:18-06:00
Data objects for hash type.
Changes for 0.04 - 2024-03-19T13:12:38+01:00
- API CHANGE: Add 'valid_from' and 'valid_to' parameters. 'active' parameter will be removed in future. And 'valid_from' will be required in future.
- Add DESCRIPTION section to doc.
An open source web-based network management tool.
Changes for 2.074000 - 2024-03-19
- NEW FEATURES
- BUG FIXES
I have inherited some perl scripts that I've generally been able to edit well enough with my knowledge from other languages, but I need to make a change that has me stumped.
The user wants the output that happens from this loop to be reversed.
for ($nn=0;$nn<=$range_max;$nn++) { my $range=sprintf("%02d",$nn); $sum_of_A += $A_EACH_RANGE{"$range"}; $sum_of_B += $B_EACH_RANGE{"$range"}; printf("\"\",\"%s\",\"%s\",\"%s\",\"%s\",\"%s\"\n", $scale[$nn], commify($A_EACH_RANGE{"$range"}), commify($B_EACH_RANGE{"$range"}), commify($sum_of_A), commify($sum_of_B)); } So I figured all I had to do was start the for loop at the end like this:
for ($nn=$range_max;$nn>=0;$nn--) { Then I realized there's some cumulative math going on in the loop, which means the sum of everything needs to be at the top now instead of the bottom.
Now I'm stuck, I've made a few attempts like pushing it into an array so I could have the option to output in forward or reverse, but all my attempts just hang with no warnings or errors.
I figure there's a more elegant solution but my Google-fu hasn't helped.
submitted by /u/wirikidor
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Randal Schwartz is guest on Flosss Weekly 765, mostly for Dart, but he also talks quite a bit about Perl.
One of the interesting management of Dart is that they have people assigned to work shifts to triage and respond to issues so that requestors can get immediate feedback that at least someone saw their issue. I'll let him tell the rest of the story, but it's a good one.
submitted by /u/briandfoy
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FLOSS Weekly Episode 765: That Ship Sailed… And Sank
This week Jonathan Bennett and Aaron Newcomb talk with Randal Schwartz, the longest running host of FLOSS Weekly, Perl’s biggest cheerleader, and now Dart and Flutter expert. What’s new…Hackaday
Hi,
I am using Template::Mustache in a prooted Debian in termux on Android.
It works fine, however it produces this annoying warning:
"Flock not available: 'Function not implemented': continuing in unsafe mode".
As far as I can see it ultimately comes from Path::Tiny when slurping a file.
I have tried to get rid of it with "no warnings" but that did not do the trick.
So how can I suppress this warning?
submitted by /u/ghiste
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(cdlxxxvii) 12 great CPAN modules released last week
Updates for great CPAN modules released last week. A module is considered great if its favorites count is greater or equal than 12. App...niceperl.blogspot.com
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Hackathon Perl / Open Food Facts in Paris
2024-03-23T09:00:00Z (UTC)→2024-03-24T17:00:00Z (UTC) Open Food Facts, 3 avenue victoria, 79004 Paris English below French En association avec les mongueurs, nous proposons d’organiser un Hackathon (marathon de programmation) autour de l’utilisat…Open Food Facts Forum
Webservice to connect to Onfido API
Changes for 0.006 - 2023-07-02T15:36:03+00:00
- Add hook
Open a file for shared reading and/or writing
Changes for 4.05 - 2023-07-02
- Fix tests with perl-5.38.0.
MIDI-Drummer-Tiny-0.4201
Changes for 0.4201 - 2023-03-27T15:35:48Z
- Improve documentation.
https://metacpan.org/dist/MIDI-Drummer-Tiny
MIDI-Drummer-Tiny-0.4200
Changes for 0.4200 - 2023-03-27T15:26:17Z
- Add the set_channel() and set_volume() methods.
- Improve documentation.
https://metacpan.org/dist/MIDI-Drummer-Tiny
Validation-Class-7.900059
Changes for 7.900059
- Change: 8e4779d9d7127d11626058d1809df691b91dd35a Author: Christiaan Kras <c.kras@pcc-online.net> Date : 2023-03-27 22:16:38 +0000
- Change: 7efcee6e33044b40a4d83c4423b01a7eda6fba38 Author: Christiaan Kras <c.kras@pcc-online.net> Date : 2023-03-27 21:26:57 +0000
- Change: 261609a9971e6fcc12722c59cf12d8fb2f733503 Author: Christiaan Kras <c.kras@pcc-online.net> Date : 2023-03-27 20:57:24 +0000
https://metacpan.org/dist/Validation-Class
Syntax-Kamelon-0.22
https://metacpan.org/dist/Syntax-Kamelon
