#regex Development Tutorials & Tips | Roast Dev

Using regex named capture groups to process lines in a CSV file in ruby.

Imagine you are processing a CSV file with information from weather stations. single line might look like this ⛶Hamburg;22.0,Berlin;18.45,Tokyo;11.23,New York;4.20\nThe regex library in ruby allows...

16.03.2025 0 Read More

How to remove dashes only from the line in RegExp?

How to remove dashes only from the line in RegExp?HKCU\Profiles\0\lines to modify " -a -b -c"ex.HKCU\Profiles\0\lines to modify " -a -b -c" HKCU\Profiles\0\line line unchanged " -a -b -c"it should beH...

19.03.2025 0 Read More

🌀 Regex Trick: Simulating a "Loop" Without Lookaheads or Scripting

What if you could extract multiple substrings from a line — only if it starts with a special character — using a single regular expression? No lookahead. No repeated captures. No scripting. Just p...

21.03.2025 0 Read More

Meme 26-3-2025

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26.03.2025 0 Read More

Regex everywhere

Regex has been a constant in nearly every coding project I’ve worked on. And since infrastructure today is also built on code, regex patterns are everywhere—for instance, in the configurations of ...

02.04.2025 0 Read More

How to deal with regex? An extremely concise and definitive AI workflow.

Motivation Some time ago I had to deal with some complex regex patterns to process huge amounts of data via Apache Spark (using the pyspark API). In this process I've found a pretty simple, a...

09.04.2025 0 Read More

I made a text filtering tool!

I kept having problems with sifting through large datasets, and I didn't feel like writing a new script each time I wanted to extract text.So I made Textkala! It can: Match text to an input by prefix,...

20.04.2025 0 Read More