Regular expressions

[katrinleinweber]

What are those? What are they useful for? How do I construct and use them?

Bring your own code, data, texts, etc. and we'll try to find edge-cases of your regular expressions' matching false positives or not matching false negatives.

What are the learning objective(s)?

• understanding the basic concept of character classes & sets
• constructing REs interactively in the playgrounds
• using REs in their offline editor of choice

What do participants need to know / install / bring?

• their own computer, with a suitable text editor installed (search Regex in Wikipedia's comparison)

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[katrinleinweber]

• LC episode, old SC lesson (recordings: "regular expression") & instructor mindmaps
• assistance tools & playgrounds: RegExr.com & RegEx101.com (supports Python's RE syntax) => check their "Cheatsheet" or "Quick Reference" for the reg-ex vocabulary
• "railroad" diagrams/visualisations
• advanced examples: https://www.crossref.org/blog/dois-and-matching-regular-expressions/ & https://github.com/katrinleinweber/PhD-thesis/blob/doctor/CHECKS-MD
• riddles: RegExCrossword.com & RegEx Golf

[katrinleinweber]

Demo

summarise and summarize

2019-01-09 and 2018-02-08 and 2017-03-07