Using Racket Contracts to Catch Runtime Errors Early
Learn how Racket’s contract system lets you attach pre‑ and post‑conditions to functions, get blaming exceptions when they fail, and toggle checks for production builds.
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Languages & runtimes · #racket
Building Domain-Specific Languages with Racket's #lang
Stop fighting generic syntax. Learn how Racket's #lang allows you to build custom Domain-Specific Languages (DSLs) that integrate directly into the compiler.
Choosing a Unit Testing Framework for Small Racket Educational Projects
Learn how to pick the right testing framework—rackunit, quickcheck, or plai—for small Racket projects, with constraints, trade‑offs, and a runnable rackunit example.
Racket Contracts: Catching Integration Bugs at the Module Boundary
Racket's contract system turns unstated assumptions between modules into runtime-checked specifications — and when one fails, blame assignment tells you exactly which side broke the deal.