WebAssembly · Introductory

Lesson 1 · On the house

What WebAssembly is

Binary format, portable target, browsers and runtimes; .wat vs .wasm; WASM vs JS.

Lesson 2

Tools

WABT wat2wasm/wasm2wat, wasm-objdump; C/Rust compile overview.

Lesson 3

Modules

module, types, imports/exports; (module …) shape in text format.

Lesson 4

Types and values

i32 i64 f32 f64; no GC strings at intro; locals and globals sketch.

Lesson 5

Stack machine

Push/pop discipline; i32.const; i32.add; stack height rules.

Lesson 6

Functions

func, params, results, local.get/set, call.

Lesson 7

Control flow

block, loop, br, br_if, if — structured branches, not raw jump labels.

Lesson 8

Memory

Linear memory, i32.load/store, data segments sketch.

Lesson 9

Imports, exports, and host

Import from env/JS, export funcs/memory; instantiate sketch.

Lesson 10

From languages

rustc/clang wasm32, wasm-bindgen sketch, when to choose WASM.