Do I have #regex experts among my followers: echo "123.4506000" | sed -E 's/(\.[0-9]*[1-9])?0+$//; s/\.$//' is intended to remove trailing 0s when its a number with a decimal point. But when there are no cifers behind the decimal point other than 0s, the whole number shall be stripped of the point and the 0s. What are I am doing wrong? Sharing appreciated.

[FR]
Arrivée ici début 2025, big up aux @admin de Piaille.fr ! #introduction :
Tombée dans la marmite #OpenSource en 2000, je me nourris de commandes #bash. Fichiers texte, #grep et ses jolies #regex, #ansible, #git, #greasemonkey, les tests auto et la supervision sont tes amis.
Cordes frottées, grattées et frappées, sons soufflés, chantés ou beatboxés, sons électro ou scratchés me touchent. Rien de tel qu'une bonne soirée à jammer / à enregistrer pour un beatmaker / à débarquer sur scène pour accompagner quand il manque un instrumentiste / à repiquer des morceaux entiers sur papier à l'ancienne / à improviser avec les enfants
Engagée #AMAP et pro #CNV

Anybody else download like 1000 TikToks and max out their phones storage and their back up solution? No...yeah...Me Neither.

But if someone did, here's a way to solve it quickly on Android devices.

Since #TikTok names all its video files 32bithexadecimalvalue.mp4, we can us a little #grep and #regex along with #Termux to sort through the #Android #camera roll and delete all the corresponding files.

https://justinmcafee.com/posts/2025/so-you-downloaded-a-thousand-tiktoks/

Im trying to provide aliases for #regex definitions so that humans would be able to understand things better scanning my coding.

However, an identifier as terse as `/[^\s\t_-\/\.=<>:]+/` becomes hideously long to describe in english descriptors.

Is there a midpoint reference or shorthand that could serve as a compromise?

I may just provide a vague numbered reference as a hack - but this obviously is ineligent and a recipe for bugs (should I label something else with the same nomenclature)

The Essential Guide to Regular Expressions for Data Scientists - KDnuggets https://www.kdnuggets.com/the-essential-guide-to-regular-expressions-for-data-scientists

Mal eine Frage zu #Regex.

Eins hat ja immer mehrere Optionen, wie Regexen geschrieben werden können.

Wenn ich jetzt bspw. folgendes matchen will:

2025-04-03 09:45:52,731 INFO

Mach ich dann eher A oder B?

A: ^[0-9]{4}-[0-9]{2}-[0-9]{2}\s+[0-9]{2}:[0-9]{2}:[0-9]{2},[0-9]{3}\s{1}(?P<level>[A-Z]*)

B: [0-9-:,\s]*(?P<level>[A-Z]*)

Welche Variante ist denn schneller?
Was ist hier besser?

Hey, does anyone have recent experience with trying to get an LLM to make regexes for you? Does it work? I hate doing them but I suspect that's an area where I'd still need to be an expert to see that it isn't working.
#regex #LLM

Mal tief im Gehirn kramen, wie war das mit Regular Expressions? Finde alle "Seite [num]" in einem Text und ersetze sie durch <a href="base/[num]">Seite [num]</a>. Ob ich mal ChatGPT frage? #regex

My PhD student was still feeling uncomfortable with #regex, so I searched and found these awesome regex games that can help you improve your regex-fu and help you have some fun during your daily commute:

https://regexcrossword.com

https://www.the-regex-game.com/?level=integer

and this imho is more geared towards beginners:

https://regexone.com

Pyparsing 3.2.2 cleans up a formerly internal-only utility method make_compressed_re(), and makes it part of the public API. Given a list of strings, it generates a regex to match those strings and only those (so no cheating like ".*").

Here are before/after expressions for matching chemical symbols.

Teaching a young #dev the power of #regex

Not sure I'm doing him a favour. So much power, so hard to parse and a potentially endless time-sink.

And old, powerful, and mysterious language...

#python #pandas #regex
Ein großer Fallstrick für mich, sind die unterschiedlichen Rückgabewerte.
pandas lässt recht einfach auf den gesuchten Regex als Rückgabewert zugreifen, bei python zusammen mit re braucht es eine extra Schleife, wenn man den Regex als Rückgabewert will.
Der Kleinkram macht immer den Unerschied!

check if a #regex is valid but in #idris
https://www.reddit.com/r/ProgrammingLanguages/comments/hb6rn4/dependent_types_and_usability/

Today was another day where I'm glad that I know the the cat-walks-on-keyboard patterns of #regex for searching and analysing thousands of rows in a textfile.

I have a #regex problem
https://www.wikidata.org/wiki/Property:P12852 allows " [-]?[1-9]\d* " as the regex for the external identifier. From what I understand, the identifier could then start or not with a - (which is great, because some IDs have it and some haven't).

Except when I try to add the identifier "-24371055" (with the initial -) here https://inventaire.io/entity/inv:85e7620f1b40f78aeb53f1c62a0507ab on @inventaire I get an error message. Inventaire uses #Wikidata properties and constraints.

What am I missing?