Fun(ctional) Domain Driven Design (featuring Ukulele)
summary
Shows an F# live-coding session that builds a small DSL modeling musical concepts (typed semitones and chromas), encodes intervals and chords, and maps chord notes to ukulele strings and frets. Implements functions to compute fret positions, filter combinations that contain all chord tones, score difficulty by sum-of-squares of fret numbers, and pick the minimal solution to produce playable tablature for songs.
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chapters (12)
- 0:00Introduction
- 1:48Notes and semitones
- 4:15Chroma type
- 8:14Operators and alterations
- 14:18Interval definitions
- 19:50Chord construction
- 24:33Ukulélé modeling
- 32:07Finding frets on strings
- 36:44Chord possibility filtering
- 39:17Position difficulty calculation
- 41:05Display and musical demo
- 45:00Conclusion
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