s/regex/DSLs/: What Regex Teaches Us About DSL Design

on YouTube ↗36m

" summary

Regex serves concrete lessons for DSL design: it favors tight domain integration by expressing text-processing in text, it leans on composability via simple grammar, and it succeeds by staying small—closed domain integration—not trying to parse everything. The concrete toolkit described: three Ruby DSL shapes (class-macro, method-chaining, block), a Twitter-query micro-DSL built without monkeypatching, and practical extension APIs like RSpec’s; historical and production context includes regex embedded across tools and ActBlue’s cited $30 average donation and ~$850M raised.

AI-written summary · about

" chapters (11)

1. 0:00Start
2. 0:31Introduction for Regular Expressions
3. 5:27What Are Dsl
4. 6:36Whether Regex Are Actually a Dsl
5. 12:16Composability
6. 13:11Class Macro Dsl
7. 13:50Method Chaining
8. 15:23Nested Block Dsl
9. 18:25Why Reg Exes Are Made of Strings
10. 26:29Closed Domain Integration
11. 28:01Getting There

" related talks

• 37mRuby ate my DSL!Daniel Azuma · RubyConf 2019
• 01h 10mDomain Specific Languages: Molding RubyJoe O'Brien · MountainWest RubyConf 2008
• 38mDSLs, Code Generation, and New Domains for RubyJoel VanderWerf · RubyConf 2009
• 31mSeeing Metaprogramming and Lambda Function Patterns in RubyLukas Nimmo · RubyConf 2016
• 25mMore DSL, Less PainEvan Light · LoneStarRuby Conf 2011
• 30mRuby Techniques by ExampleJeremy Evans · MountainWest RubyConf 2010
• 46mGrammar a BNF like Ruby DSL ParsingEric Mahurin · Lone Star Ruby Conference 2008
• 33mWriting DSL's with ParsletJason Garber · Wicked Good Ruby 2013