podcast – Mostly Erlang cover image

podcast – Mostly Erlang

060 Metaprogramming Elixir

Mar 25, 2015
Chris McCord discusses his book and the appeal, challenges, and benefits of metaprogramming in Elixir. They explore examples of building a DSL for frameworks like Phoenix and the usage of macros in testing.
00:00
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Episode guests

Chris McCord

Podcast summary created with Snipd AI

Quick takeaways

  • Meta programming in Elixir allows code to be written that writes code, making it easy to dip into Elixir's data structures and produce powerful code generation.
  • Macros in Elixir and Erlang provide opportunities for innovative testing approaches, enhancing code coverage, static analysis, and test generation.

Deep dives

Overview of Meta Programming in Elixir

Meta programming in Elixir allows code to be written that writes code. It offers a natural syntax over an abstract syntax tree (AST), enabling the generation of code by writing code. This AST allows code to be built like Lego building blocks, making it easy to dip into Elixir's data structures and produce powerful code generation. Unlike other languages with meta programming, Elixir's macros have a full programmable AST, simplifying the process and making it accessible to developers.

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