Metaprogramming + DSL Design in Elixir
summary
Covers Elixir’s actual metaprogramming mechanics: quoted expressions as three‑element tuples, use of var and unquote to cross hygiene boundaries, macros to inject code, and compile-time callbacks like @before_compile and on_definition. Builds a DSL that stores sequences in accumulating module attributes, implements sequence, note and embed macros, generates a module function via before_compile, and delegates runtime playback to a note player that calls ALSA aplay. Live coding runs tests and plays the composed track, all tests pass.
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chapters (9)
- 0:0001:02 - Introduction
- 1:0301:46 - Metaprogramming: What is it?
- 1:4702:57 - Metaprogramming: Pros and Cons
- 2:5804:30 - Metaprogramming" When to use it?
- 4:3105:28 - Metaprogramming in Elixir
- 5:2912:54 - Quoted Expressions
- 12:5514:14 - Summary
- 14:1527:17 - Let's build a DSL
- 28:1837:17 - QnA
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