Hello all!
You know i don't write for nothing, so here i won't cover whole regex theory, other sites does it well.
Here i want to present a great tool boosting your regex composing time.
It brings:
- Didactic live regex composing
- Dynamic testing
- Code generation
This is a webservice: regex101.com
Just see:


So you can see you can painless generate code or sequences to make this regex work well in your context: php, javascript, sed, perl, ruby, rust, java, golang, c#...
It's definitively my best regex choice for the complex regex i sometimes have to compose or check.
Enjoy!
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See you all!