Learn Rust by solving engaging computer science problems and interview questions. Master ownership, iterators, and idiomatic Rust naturally through hands-on challenges.

Learn TypeScript by solving small, focused problems — strings, arrays, objects, closures, and recursion — each with tests you run. A problem-first on-ramp: implement one function per card and watch the tests go green.

Learn Zig by solving progressively challenging problems. From basic functions to allocators, error unions, and comptime — each exercise introduces Zig concepts exactly when you need them.