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A step-by-step guide to writing, debugging, and safely using Crystal 1.8+ macros for zero-overhead code generation and DSLs — covering AST interpolation, hygiene, {% debug %}, and common pitfalls.
Haxe macros run at compile time and rewrite your AST before target code is generated. Here's a worked compile-time validation example, plus the debugging, versioning, and cross-target trade-offs that decide whether a macro belongs in your codebase.
Learn how ClojureScript’s `defmacro` expands at compile time, how it behaves across browser, Node.js, and React Native targets, and how to verify macro output before shipping. Includes a concrete example, trade‑offs, and actionable steps.
TeX's \newcommand macro system eliminates repetitive formatting by letting you define reusable, parameterized commands. This blog shows how to create semantic macros for vectors, operators, and expectation values, avoid naming collisions, and verify the output with a minimal compile test.
An architecture note on using Haxe compile-time macros as the smallest design for rules that must never be bypassed at runtime — covering trust boundaries, operational checks, and when to replace macros with external generators.
Functions can't delay evaluation of their arguments — macros can. A practical look at Racket's define-syntax-rule, hygiene, and the macro stepper, with worked examples and honest trade-offs.
Nim macros generate getter and setter methods at compile time, eliminating repetitive boilerplate without runtime overhead.
Crystal’s pattern matching lets you replace nested if/else blocks with concise, type‑safe branches. Learn the syntax, see a step‑by‑step example, and weigh performance trade‑offs before adding it to your codebase.
Learn how Racket's syntax/parse library simplifies macro authoring, reduces boilerplate, and improves hygiene with a worked state‑machine example.
haxe
clojurescript
nodejs
tex
racket
crystal