Is rust a good programming language?

Rust has been repeatedly voted "Most Loved Language" on the StackOverflow Developer Survey. The Rust Programming Language, 2nd Edition is the official guide to Rust 2021: an open source systems programming language that will help you write faster, more reliable software.

How do I find the rustup documentation?

Run rustup doc to open the local documentation in your browser. Any time a type or function is provided by the standard library and you’re not sure what it does or how to use it, use the application program- ming interface (API) documentation to find out! Hello, World! Now that you’ve installed Rust, let’s write your first Rust program.

Does rust support automated software tests?

Rust’s type system shoulders a huge part of this burden, but the type system cannot catch every kind of incorrectness. As such, Rust includes support for writing automated software tests within the language. As an example, say we write a function called add_two that adds 2 to what- ever number is passed to it.

How do I use the IO library in rust?

The io library comes from the standard library (which is known as std): use std::io; By default, Rust brings only a few types into the scope of every program in the prelude. If a type you want to use isn’t in the prelude, you have to bring that type into scope explicitly with a use statement.