Exploring Scala 3 Macros: Building a Toy Quoted Domain Specific Language

2023/08/08

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The article explores the use of Scala 3 macros to build a toy quoted domain specific language (QDSL). The author expresses the difficulty of finding comprehensive guides on Scala 3 macros and aims to provide a practical example that goes beyond simple API architecture. Inspired by the ZIO Quill library, the project focuses on parsing CSV files using macros and generating code in the Unix awk tool. The article highlights the benefits of using macros for code generation and explains the basic query quote, basic maps quote, and chained maps quote functionalities of the QDSL. The article also mentions that the project serves as a learning tool for understanding the mechanics of macros and the QDSL technique. The author recommends using the scala-cli tool to compile and run the project, which is available on GitHub. Overall, the article offers developers a practical example of using Scala 3 macros in a real-world scenario.