Fantastic resource! I am teaching a little about this right now and this is the perfect resource.

Nice Article !

Reminds me of a funny quote

"One day my daughter came in, looked over my shoulder at some Perl 4 code, and said, "What is that, swearing?"

-Larry Wall

👏

Other useful tools: regex101.com After many years of using tools (I love regexes!), I settled down on this one (rather than others) for a few reasons:

• easy support of whitespace (when you have to deal with more than just spaces)
• support various languages. Not all regexes are exactly the same
• code generation. Ease the process to escape things
• built-in tests support!

regexplained.co.uk which builds a railroad diagram of the regex pattern you give it. Makes it easy to review/read/understand a new pattern.... as they grow they can become hard to read easily, this helps a lot!

Why do you use a character set in this example?

String[] str=s.split("[\\s]+");

I mean, it is unnecessary in this case...

Anyway, I love to see people sharing the regex power :)

A good run down and easy to read :-)

I add some links I find useful:

Cheat Sheet

• Regex cheatsheet

A vast collection of solutions

• Regex DB

Generate RegExes from input data

• http://regex.inginf.units.it

Online Editors

• Online regex tester and debugger
• Regexper (My personal favorite <3)
• RegExr: Learn, Nuild. & Test Regex

Visualize RegExes

• Regulex: JavaScript Regular Expression Visualizer