Perl Weekly - all the articles published by Luca Ferrari

http://fluca1978.blogspot.com

2016.11.20 in #279 Movie-like film reader/printer based on Perl 5
Something we all did at least once, and that probably occupy 50% of the workload of the IT department of any given CSI show: a cute little script printing text in a way that mimic human typing. Nicely enough, you can compare this Perl 5 solution with its Perl 6 sibling of last week.
2017.05.05 in #302 perlcritic and allowing simple double sigils dereferencing
Perl::Critic::ProhibitDoubleSigils can be a bit too aggressive; consider ProhibitComplexDoubleSigils instead!
2018.12.03 in #385 PostgreSQL 11 Server Side Programming - Quick Start Guide
I don't know if I'll ever need to write code on a PostgreSQL server, but if I do I know which book I am going to buy. Heck, I might buy it just to learn about a subject I have never used before. Congratulations Luca!
2019.11.12 in #434 Developer on Fire Interview
2020.01.29 in #445 Perl Weekly Challenge 45: encoded messages and self-source-code-printing
Luca attempt to improve Raku learning. Really interesting take.
2020.02.03 in #446 Perl Weekly Challenge 46: encoded messages and open rooms
Luca introduced new implementation of weekly challenge in the blog.
2020.02.10 in #447 Perl Weekly Challenge 47: Roman Number Calculator and Gapful Numbers
Luca shared the trick for Roman Calculator. Highly Recommended.
2020.02.17 in #448 Perl Weekly Challenge 48: Survivors and Palindrome Dates
Luca's implementation of Palindrome date is worth reading. I enjoyed it thoroughly.
2020.02.24 in #449 Perl Weekly Challenge 49: Smallest Multiple and LRU Cache
Luca came up with class LRU in Raku to solve the LRU cache task.
2020.03.02 in #450 Perl Weekly Challenge 50: overlapping ranges and nobel numbers
Luca used the power of Range class to solve the Merge Intervals. Looks very clean solution.
2020.03.09 in #451 Perl Weekly Challenge 51: colorful numbers and triplets
Another magical Raku work shared by Luca. Highly Recommended.
2020.03.17 in #452 Perl Weekly Challenge 52: overlapping ranges and nobel numbers
Interesting take on Lucky Winner task. Also shared how COVID-19 has affected his daily routine.
2020.03.23 in #453 Perl Weekly Challenge 52: overlapping ranges and nobel numbers
Check out the fancy Raku regex, I found it very cool.
2020.03.29 in #454 Perl Weekly Challenge 54: Permutations and Collatz
Luca solved the Extra credit task using simple hash.
2020.04.06 in #455 Perl Weekly Challenge 55: Weaving and Flippin
Loved how Luca dealt with Wave Array task. There is so much to learn from his work.
2020.04.14 in #456 Perl Weekly Challenge 56: Weaving and Flipping
I loved it. Great reading for someone learning Raku.
2020.04.20 in #457 Perl Weekly Challenge 57: I suck at doing trees
Luca created Raku Class Node to solve Invert Tree task. There are plent for me to learn from his work.
2020.04.27 in #458 Perl Weekly Challenge 58: (almost) semantic version numbers and people lineup
Luca's Raku solution to the weekly challenge is full of Raku magic. I loved it.
2020.05.04 in #459 Perl Weekly Challenge 59: bits and arrays
Our last month champion, Luca, shared his Raku magic.
2020.05.11 in #460 Perl Weekly Challenge 60: bits and arrays
Luca packed plenty of Raku gems in one blog. Highly Recommended.
2020.05.18 in #461 Perl Weekly Challenge 61: IPv4 addresses and multiplications
Luca use of brute force with the power of Raku is deadly combination.
2020.05.26 in #462 Perl Weekly Challenge 62: queens and email
Luca, one of the few, who attempted 3D N Queens task. Must Read.
2020.06.01 in #463 Perl Weekly Challenge 63
Luca shared two versions of Last Word task in Raku.
2020.06.08 in #464 Perl Weekly Challenge 64: matrix sum and splitting words
Luca used Raku class to deal with the weekly challenge.
2020.06.15 in #465 Perl Weekly Challenge 65
Luca shared very interesting fact about Raku. Must Read.
2020.06.22 in #466 Perl Weekly Challenge 66
Luca always keep us posted about Coronavirus, his cat and eye. We wish him quick recovery.
2020.06.29 in #467 Perl Weekly Challenge 67
Nice to hear, Olivia is getting better. Enjoy his regular Raku magic.
2020.07.06 in #468 Perl Weekly Challenge 68
Interesting approach to the Linked List task, must read.
2020.07.13 in #469 Perl Weekly Challenge 69: Strobogrammatic and 0-1 numbers
Luca shares the power of gather/take of Raku. Must Read.
2020.07.23 in #470 Perl Weekly Challenge 70: flipping and greying
Good luck for your eye surgery. Please don't let the mood go down.
2020.07.27 in #471 Perl Weekly Challenge 71: linked lists and peaking
Olivia, the pet cat in the house of Luca has now become official mascot for Perl Weekly Challenge. Hope and pray she gets well soon.
2020.08.03 in #472 Perl Weekly Challenge 72: trailng zeros and line filter
Luca has been dealing many issues in his personal life but still managing time to do weekly challenges. Incredible.
2020.08.16 in #473 Perl Weekly Challenge 73: reduction to min
Highlight of the blog is the use of [min] reduction operator of Raku.
2020.08.17 in #474 Perl Weekly Challenge 74: counting
You can't afford to miss the Raku one-liner by Luca. Must Read.
2020.08.24 in #475 Perl Weekly Challenge 75: nested loops
Luca pushed Raku to the limit to get the end result. Solution to the "Largest Rectangle Histogram" stands out.
2020.08.31 in #476 Perl Weekly Challenge 76: my last PWC (for a while)
Luca, all the best for your eye surgery. Hope everything goes smooth and you regain the sight in both eyes.
2021.01.04 in #494 Perl Weekly Challenge 94: I’M (nearly) BACK!
Welcome back Luca. It is so inspiring to see him back in action.
2021.01.11 in #495 Perl Weekly Challenge 95: palindrome numbers and stacks
Luca is an inspiration to all PWC members. Thank you for sharing your knowledge with us.
2021.01.18 in #496 Perl Weekly Challenge 96: Levenshtein distance
Luca sharing the power of Raku. It reminded me of my days of struggling with Raku.
2021.01.25 in #497 Perl Weekly Challenge 97: flipping and swapping
Luca kept the Caesar Cipher task simple and easy to follow.
2021.02.01 in #498 Perl Weekly Challenge 98: reading chars and inserting in array
Luca kept the discussion to the point. Simple and easy to follow.
2021.02.08 in #499 Perl Weekly Challenge 99: ovelapping searches
Thanks for sharing the good news about your eye. Reading his blog is always fun.
2021.02.15 in #500 Perl Weekly Challenge 100: times and triangles
Luca shares his Raku skill and presented some Raku magic.
2021.03.08 in #503 Perl Weekly Challenge 103: Chinese Calendar and streaming players
Luca is back with a bang. Nice demo of using Class in Raku.
2021.03.15 in #504 Perl Weekly Challenge 104: recursion and picking
Luca as always shared Raku magic like samewith().
2021.03.22 in #505 Perl Weekly Challenge 105: singing roots
Luca's blog makes it lot easier to read his Raku solutions. Keep it up.
2021.03.29 in #506 Perl Weekly Challenge 106: quick and easy
Luca used his Raku skill and made both tasks look like schoolboy tasks. Simply the best.
2021.04.08 in #507 Perl Weekly Challenge 107: copying myself
Luca used Raku's Meta Object Class to solve the List Methods task.
2021.04.12 in #508 Perl Weekly Challenge 108 - Memory Layout and Bell Numbers
I loved the use of Raku's 'multi' feature. It makes code so clean and easy to read. Thanks for sharing.
2021.04.22 in #509 Perl Weekly Challenge 109: Choowa Numbers and Sums
Luca came up with compact solutions in Raku. Well done. Keep it up.
2021.04.26 in #510 Perl Weekly Challenge 110: Mangling Text File
Luca shared some cool Raku magic dealing with regex. Thanks for sharing the knowledge.
2021.05.03 in #511 Perl Weekly Challenge 111: Words and Matrix
Luca showed the power of Raku when dealing with the weekly challenge. He made it look so simple.
2021.05.10 in #512 Perl Weekly Challenge 112: Climbing the canonical path!
Luca attempted to solve the Climb Stairs task without the use of any library; pure logical solution.
2021.05.18 in #513 Perl Weekly Challenge 113: sums and trees
Luca shared the real power of Raku. I loved his solution to the Recreate Binary Tree task specially.
2021.05.24 in #514 Perl Weekly Challenge 114: palindrome and 1's number
As always, you can find interesting Raku magic in Luca's blog post. Fun to read the blog.
2021.06.08 in #516 Perl Weekly Challenge 116: numbers
Luca's verbose solution is so simple to follow. Thanks for sharing.
2021.06.15 in #517 Perl Weekly Challenge 117: quick and dirty
Luca's Raku solution to the Find Possible Paths task is my favourite this week. The code looks elegant. Thanks for your efforts.
2021.06.28 in #519 Perl Weekly Challenge 119: numbers
2021.07.05 in #520 Perl Weekly Challenge 120: quick and dirt
Luca's solution to the Clock Angle task is unbelievably simple. Simply genius. Thanks for sharing.
2021.07.12 in #521 Perl Weekly Challenge 121: bits and salesman
Luca didn't like The Travelling Salesman task but still managed to present us the solution in a simple and easy-to-follow way. Thanks.
2021.07.20 in #522 Perl Weekly Challenge 122: mangling numbers
2021.08.04 in #524 Perl Weekly Challenge 124: difficult women
Luca used Raku a class to deal with the task #1. I noticed the intensity in his work. I respect the honesty in his contributions. Keep up the great work.
2021.08.16 in #526 Perl Weekly Challenge 126: counting mines.
Luca's solution to the Minesweeper Game is easy to read and follow. I liked the simplicity. Keep up the great work.
2021.08.23 in #527 Perl Weekly Challenge 127: no need for coffee
Short and sweet Raku solutions shared by Luca. Incredible.
2021.08.30 in #528 Perl Weekly Challenge 128: to much complex?
Luca also used a Raku class to solve the Minimum Platform task. I just love it. Keep it up.
2021.09.06 in #529 Perl Weekly Challenge 129: trees and sums
Luca being a Raku lover, once again shared cool use of Raku class. Nice introduction to Raku class if you are new to Raku. Thanks for sharing.
2021.09.13 in #530 Perl Weekly Challenge 130: quick
I hate trees with a passion! sums up all the emotion by Luca. However we still got clean Raku code.
2021.09.20 in #531 Perl Weekly Challenge 131: no coffee, no elegance
Luca shared a cool Raku trick as always. Thanks for sharing.
2021.09.27 in #532 Perl Weekly Challenge 132: not so clear...
Luca showing off his Raku skill. Great work for anyone wants to learn the Raku language. Thanks for sharing.
2021.10.09 in #533 Perl Weekly Challenge 133
Luca's solution to the Smith Numbers task in Raku is the highlight of this blog post. Check it out for more Raku magic.
2021.10.11 in #534 Perl Weekly Challenge 134
Great demonstration of Raku power and very well explained as always. Thanks for sharing the knowledge.
2021.10.18 in #535 Perl Weekly Challenge 135: in a rush
I simply loved the compact solutions for both tasks in Raku this week. Great work.
2021.10.25 in #536 Perl Weekly Challenge 136
Luca uses all the power of Raku to get the job done with ease. Cool promotion of Raku language as well.
2021.11.01 in #537 Perl Weekly Challenge 137: palindrome sums on long year
Luca recently started sharing solutions in PostgreSQL along with Raku. What a bonus we got, thanks Luca.
2021.11.08 in #538 Perl Weekly Challenge 138: split working days
Luca once again shares Raku and bonus solutions in PostgreSQL. Luca keeps things simple and I find it easy to follow. Thanks for sharing your knowledge.
2021.11.15 in #539 Perl Weekly Challenge 139: repeating and sorting
The special attraction of this blog post is the discussion of the PostgreSQL solution. Keep sharing your knowledge with us.
2021.11.22 in #540 Perl Weekly Challenge 140: bit table multiplication
Luca continued to share his PostgreSQL knowledge with us. Thank you for keeping us entertained for so long.
2021.11.29 in #541 Perl Weekly Challenge 141: longer than I thought!
Luca's one liner in Raku is very impressive. There is so much to learn by just reading his blog. Thanks for sharing the knowledge,
2021.12.06 in #542 Perl Weekly Challenge 142: divide and sleep
Luca also used Raku's Promise feature to solve the Sleep Sort task. Thanks for sharing the knowledge.
2021.12.13 in #543 Perl Weekly Challenge 143: stealthing the grammars!
The PostgreSQL solution is worth checking out. It is one of my favourite databases, I am impressed by how Luca solves the weekly tasks in PostgreSQL.
2021.12.20 in #544 Perl Weekly Challenge 144: headache!
Solution to Semiprime in Raku is really cool, showing method chaining. Just love it. Thanks.
2021.12.29 in #545 Perl Weekly Challenge 145: the last challenge of the year!
Luca's one-liner in Raku is always the main attraction and not to be missed. Please do check it out yourself.
2022.01.04 in #546 Perl Weekly Challenge 146: the first challenge of the year!
Luca is one of the Raku fans in the team. This week he shared a Raku class solution. Well done.
2022.01.10 in #547 Perl Weekly Challenge 147: truncating pentagons
Luca is a Raku fan but recently he started sharing solutions in PostgreSQL. I simply love it, Keep sharing.
2022.01.19 in #548 Perl Weekly Challenge 148: eban vs cardano
Thanks Luca for sharing Raku's almost equality operator. Keep it up, great work.
2022.01.24 in #549 Perl Weekly Challenge 149: Fibonacci and squares
Luca is another Raku champion in the team, sharing lots of fun bits of Raku. Highly recommended.
2022.01.31 in #550 Perl Weekly Challenge 150: Fibonacci and squares (again!)
I loved the parameter checking in Raku. Keep it up; great work.
2022.02.14 in #552 Perl Weekly Challenge 152: St. Valendtine's sums and triangles
Cool demo of Raku class. Nice example to show the power of Raku. Keep it up great work.
2022.02.21 in #553 Perl Weekly Challenge 153: take it easy
Raku one liner is the highlight for me. Thanks for the Raku magic week after week.
2022.02.28 in #554 Perl Weekly Challenge 154: lazyness and recursion
Luca showing off the amazing power of Raku with a one-liner solution. Keep it up, great work!
2022.03.07 in #555 Perl Weekly Challenge 155: Fortunate and Pisano in Primes
Personally for me, I enjoyed the PostgreSQL solution more than anything else. Keep it up great work.
2022.03.21 in #557 Perl Weekly Challenge 157: numbers
Cool use of Raku's Bag feature makes the solution look so compact. Keep up the great work.
2022.03.28 in #558 Perl Weekly Challenge 158: to be prime or not to be prime
The Raku one-liner for the Additive Primes task is really cool! Thank you for all the support.
2022.04.04 in #559 Perl Weekly Challenge 159: numbers and numbers
Luca has been sharing Raku magic for years now. This week was no different, a very compact solution. Keep it up great work.
2022.04.11 in #560 English equilibrium
Luca is a great promoter of the Raku language. I liked his one-liner in Raku, which was very interesting. Thanks for sharing your knowledge.
2022.04.20 in #561 Perl Weekly Challenge 161: words
Luca has been sharing PostgreSQL solution for sometime now. It is always fun to read it alongwith Raku solutions. Thanks for sharing.
2022.05.02 in #563 Perl Weekly Challenge 163: the infinite loop
Luca not only shares his Raku magic but also clever solutions in PostgreSQL. It reminds me my days with Oracle. Keep it up great work.
2022.05.09 in #564 Perl Weekly Challenge 164: quick and easy
Luca came up with yet another Raku magical solutions. Like always we got bonus with PostgreSQL solution too. Thank you for everything.
2022.05.18 in #565 Perl Weekly Challenge 165: SVG
Luca's forte is Raku but I am sure you would appreciate his PostgreSQL solution. Thanks for everything.
2022.05.23 in #566 files, directories and hex!
Elegant Raku solutions together with PostgreSQL implementation. I enjoyed it thoroughly. Thank you.
2022.05.30 in #567 too much math!
Method chaining in Raku makes the solution so compact. He even dared to face the Gamma function task. Congratulations.
2022.06.06 in #568 prime numbers is many ways!
Luca never misses the opportunity to impress with his Raaku skill. We also got bonus PostgreSQL solutions too. Thank you for your contributions.
2022.06.13 in #569 primes and more primes!
Luca is another Raku fan. I get to learn a lot about the language every week. Thanks for your contributions as always.
2022.06.20 in #570 primorial matrix!
Luca making good use of Raku power to get the job done. Keep it up great work.
2022.06.27 in #571 numbers and references
Compact and modularised solutions in Raku and PostgreSQL as always. You don't want to skip it. Thanks for sharing the knowledge.
2022.07.11 in #573 sly
Sharing the trick from Raku, as always. Keep it up great work.
2022.07.18 in #574 the power of permutations
A compact Raku solution is too good to be missed. Thanks for sharing.
2022.07.25 in #575 Sunday Math!
Luca is known for his compact Raku solutions. This time too, we got two cool solutions in Raku. Thanks for sharing the knowledge with us.
2022.08.02 in #576 scrumbled numbers
Luca showing the power of Raku in this week solutions. Thanks for sharing the knowledge with us.
2022.08.10 in #577 Damn numbers!
Well documented solutions as always by Luca. Keep it up great work.
2022.08.19 in #578 Impressive shortest solution to the task #1 in Raku. Well done. Keep it up great work
2022.09.12 in #582 max and containing paths
Compact Raku solutions with detailed analysis. Keep it up great work.
2022.09.19 in #583 arrays and days
Raku clearly leaving every other language behind. You must check out, the power of Raku. Keep it up great work.
2022.09.25 in #584 mangling strings
Raku power of parameter checking is worth looking. Highly recommended.
2022.10.03 in #585 string substitutions
Lots of Raku magic in action. Keep it up great work.
2022.10.10 in #586 zip and unicode
Shortest solutions in Raku. Thank you for sharing the Raku magic.
2022.10.17 in #587 overlapping days and numbers
Brute force method in show, not a bad choice. In the end you get a clean solution. Keep it up great work.
2022.10.30 in #588 I have no time this week!
I loved the parameter checking in the signature. Clean approach, well done.
2022.10.31 in #589 I have no time this week (again)!
Nice use of Bag to solve Array Degree task. Raku powerful feature is on fire. Well done.
2022.11.07 in #590 decoding strings
Impressive solution to the task "Decoded List" in Raku. Well done.
2022.11.14 in #591 permutations!
Nice demo of Raku power in the blog. Anyone interested to learn Raku should follow the blog.
2022.11.21 in #592 distribute and flip
Special one-liner in Raku is not to be nissed. Well done. Thanks for sharing.
2022.11.28 in #593 Map, map and remap!
Great show of Raku one-liner and other gems. Well done and keep it up.
2022.12.05 in #594 regular expressions everywhere!
Are you regex fan? If yes then this is for you. Thank you.
2022.12.12 in #595 Bags to the rescue!
Nice demo of Raku Bag. It makes it easy to understand the underlying context. Thanks.
2022.12.19 in #596 Merry Christmas!
Along with Raku, we get SQL version too every week. Nice treat for all of us, thanks.
2022.12.27 in #597 Lists everywhere!
Smart hack to solve the Wiggle Sort. Cool, thanks for sharing.
2023.01.04 in #598 First Perl Code of the Year!
Well, not just Raku but SQL is part of the gang as always. Please do checkout.
2023.01.09 in #599 Nested Loops Everywhere!
Fun and easy use of loops to get the job done. Well done.
2023.01.16 in #600 not optimal!
Easy route picked up by Luca, still not a bad attempt. Thanks for your contributions.
2023.01.23 in #601 not satisfied!
Clever one-liner in Raku for "Penny Piles" task, very impressive. Thanks for sharing.
2023.01.30 in #602 nested loops everywhere!
We not have Raku magic but also SQL solutions. Highly recommend.
2023.02.06 in #603 Nested Loops
Using good old loops did the trick this time. Clean solution, well done.
2023.02.13 in #604 Arrays everywhere!
Pure logical solutions in Raku without the use of any special features. One can easily port it to Perl. Easy Peasy.
2023.02.23 in #605 nested loops in a rush!
Raku is playing the smart game and getting the job done without any trouble. Great job.
2023.02.27 in #606 hard times!
A very raw solution in Raku showing the internals. Cool attempt. Thanks for sharing.
2023.03.06 in #607 arrays everywhere!
Making good use of Raku power, we get the one-liner solution to H-Index task. Very impressive.
2023.03.17 in #608 grep, grep and grep!
grep in action with full force using Raku. Easy to follow the solution.
2023.03.20 in #609 grep and loop
Luca does with Raku what James does with Perl. Well done and thanks for sharing.
2023.03.30 in #610 I didn't get very well
Lack of clarity in the task created so much confusions. Still we have solution ...
2023.04.11 in #612 Jumping words and batching arrays
Raku magic made the task so easy. Still getting it together is an art. Thank you for the contributions.
2023.04.17 in #613 from here to there!
Nice little one-liner in Raku and a very brave attempt to deal with shortest route task. Thanks for sharing.
2023.05.02 in #615 Perl Weekly Challenge 215
Welcome back and thanks for your contributions. We all missed you.
2023.05.02 in #617 Perl Weekly Challenge 215
Welcome back and thanks for your contributions. We all missed you.
2023.05.08 in #616 words, grep and letters!
Two choices, grep and regex one. You pick your favourite. Nice one.
2023.05.29 in #619 building a tree using a stack
2023.07.12 in #625 Perl Weekly Challenge 225: I m back
Welcome back and congratulation on your new job. I hope to see you regular now. Thanks for your contribution as always.
2023.07.17 in #626 Array indexes everywhere!
Like always, we have Raku and PostgreSQL solutions, enough to keep you busy. Thanks for sharing.
2023.07.31 in #628 Sums and Swaps
Complete and compact solution in Raku as always. You get bonus SQL solution too. Thanks for sharing.
2023.08.09 in #629 Perl Weekly Challenge 229
2023.08.21 in #632 min, max and regexp!
2023.09.04 in #633 Sorting, by similarity and frequency
2023.09.17 in #634 nested loops

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