WebPerl Regex Tester (beta)

I recently published a beta of WebPerl, and now I've written my first full web app with it: a browser-based regex tester.

Since WebPerl is a full build of Perl, you have the full power of core Perl at your disposal, and it runs entirely in the browser - unlike some other online regex testers, which either run perl on a server, or only support PCRE (Perl Compatible Regular Expressions). It should work in modern browsers like Firefox and Chrome (not tested in IE yet, it might have issues there). Try it out, and let me know what you think, and report any issues you might find. I'd also be happy to accept issues and patches on GitHub. Please consider it a beta.

http://webperl.zero-g.net/regex.html
(It may take a few seconds to load and initialize, WebPerl is currently a ~4MB download, but once it's in your cache it should be fine.)

You can even create URLs to examples, here I'll use that to show off some features:

A basic example, showing the match highlighting and some generated Perl code that a user can easily copy and try out. Also try clicking the use re "debug"; button for debug output.
With "preamble code", some Perl code that gets run before the regex.
Multi-line input strings work too
A somewhat more complex multi-line regex with some real-life data from one of my data-processing scripts.
And finally, some lookaround wackyness: matching characters which happen exactly once (from here, thanks LanX; see also)

Comment on WebPerl Regex Tester (beta) Select or Download Code

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Re: WebPerl Regex Tester (beta) by LanX (Saint) on Sep 05, 2018 at 02:17 UTC
Wow! You know, you could use this technology to build a training site for Perl with interactive programming challenges... (/me getting big eyes!) Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]
Re^2: WebPerl Regex Tester (beta) by marto (Cardinal) on Sep 05, 2018 at 09:14 UTC
I think this would be a really good use of the technology, and beneficial to perl, able to try things/do exercises in browser.	[reply]
Re^3: WebPerl (eLearning) by LanX (Saint) on Sep 05, 2018 at 12:26 UTC
We could combine it with perlmonks ... so that XP "whores" write lessons, editors link them to learning trails and students can ask questions linked to lessons. If I only had a local copy of the monastery's code for experimenting with a local installation ... On another note: I had to design a Perl training recently and wrote a mail with a list of self assesment questions to my colleagues. I'll try to translate it today and post it under meditations. Yesterday I was confronted with a freelancer who didn't know what a "hash" is, no matter how I named it ... OO (Would be a bless if I could simply send a link to a training lesson.) Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]
Re^4: WebPerl (eLearning) by marto (Cardinal) on Sep 05, 2018 at 12:48 UTC
Re^5: WebPerl (eLearning) by daxim (Curate) on Oct 06, 2019 at 14:53 UTC
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Re^5: WebPerl (eLearning) by Don Coyote (Hermit) on Oct 05, 2019 at 12:36 UTC
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Re^4: WebPerl (eLearning) by Corion (Patriarch) on Sep 05, 2018 at 12:33 UTC
Re^5: WebPerl (eLearning) by LanX (Saint) on Sep 05, 2018 at 13:08 UTC
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Re^4: WebPerl (eLearning) by bliako (Monsignor) on Sep 05, 2018 at 14:07 UTC
Re^5: WebPerl (eLearning) by marto (Cardinal) on Sep 05, 2018 at 14:27 UTC
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Re^2: WebPerl Regex Tester (beta) by haukex (Archbishop) on Sep 05, 2018 at 19:07 UTC
Thanks! And yes, it could certainly be used for something like that. A simplified version of the "mini IDE" that's included could be embedded in pages with example code. (I myself unfortunately won't have too much time to do anything like that soon, I'll most likely be using WebPerl for another project for the rest of the year. Update:* But I'd be happy to help, of course! `:-)` ) * Update 2: Nevermind :-)	[reply] [d/l]
Re: WebPerl Regex Tester (beta) by 1nickt (Canon) on Sep 05, 2018 at 01:45 UTC
Most impressive, Hauke, congratulations! The way forward always starts with a minimal test.	[reply]


No such thing as a small change
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