A complete map of the Rust type system

RustCurious .com Elements of Rust – Core Types and Traits A clickable visual guide to the Rust type system. Every type possible in Rust falls into one of the boxes shown. The focus here is on lang_items – types and traits built into the language to support specific syntax. The purpose is to demystify what can be built purely in library code. For example, Vec, String and HashMap do not appear here because those are just structs. Rust's clear delineation of a platform-independent core enables no_std crates in embedded firmware and other systems-level contexts where no dynamic heap is available. (discussion) Ben Williamson, 2025 Free Rust course: @RustCurious