https://doc.rust-lang.org/book/ch13-01-closures.html#closure-type-inference-and-annotation
Provide site root to javascript Work around some values being stored in localStorage wrapped in quotes Set the theme before any content is loaded, prevents flash Hide / unhide sidebar before it is displayed The Rust Programming Language Foreword Introduction 1. Getting Started 1.1. Installation 1.2. Hello, World! 1.3. Hello, Cargo! 2. Programming a Guessing Game 3. Common Programming Concepts 3.1. Variables and Mutability 3.2. Data Types 3.3. Functions 3.4. Comments 3.5. Control Flow 4. Understanding Ownership 4.1. What is Ownership? 4.2. References and Borrowing 4.3. The Slice Type 5. Using Structs to Structure Related Data 5.1. Defining and Instantiating Structs 5.2. An Example Program Using Structs 5.3. Method Syntax 6. Enums and Pattern Matching 6.1. Defining an Enum 6.2. The match Control Flow Operator 6.3. Concise Control Flow with if let 7. Managing Growing Projects ...