Structs and comptime: The Power of Compile-Time Computation

Thu, 25 Jun 2026 11:00:00 +0800

This article is based on Zig 0.16.

In the previous post, we covered Zig’s error handling and memory management — lightweight try/catch fault tolerance, and the explicit allocator-passing philosophy. Now we enter Zig’s most essential territory: structs and methods, and the soul of Zig — compile-time computation (comptime).

If you come from Go, you’ll appreciate how Zig keeps things simple by defining methods directly inside the struct. If you come from Rust, you’ll see a different take on the impl block pattern. And comptime opens a path to “types as values” metaprogramming beyond Go generics and Rust traits.

Comptime on Mi&Bee Blog

Structs and comptime: The Power of Compile-Time Computation