Learn Rust in a Month of Lunches

1 Some basics

This chapter covers

• Introducing Rust
• Using comments (putting human-readable hints in your code)
• Some primitive types (simple numbers and other simple types)
• Type inference (how Rust knows the type)
• “Hello, World!” and printing
• Declaring variables and code blocks
• Shadowing (giving variables the same name)

This first chapter is as easy as Rust gets and has a bit of everything to get started. You’ll notice that even in Rust’s easiest data types, there’s a strong focus on the bits and bytes that make up a computer’s system. That means there’s quite a bit of choice, even in simple types like integers. You’ll also start to get a feel for how strict Rust is. If the compiler isn’t satisfied, your program won’t run! That’s a good thing—it ...