rustrust string build

A Rust String is a type of data structure used to store and manipulate text. It is a growable, mutable, owned, UTF-8 encoded string type. It is a heap-allocated data structure that is stored as a pointer.

let mut s = String::new();
s.push_str("Hello");
s.push(' ');
s.push_str("world!");

println!("{}", s);

Output example

Hello world!

The code above creates a new String called s and then uses the push_str() and push() methods to add the text "Hello" and "world!" to it. Finally, it prints out the contents of the String using the println! macro.

The String type has many useful methods for manipulating text, such as split(), replace(), trim(), and to_lowercase().

Helpful links

• Rust Documentation - Strings
• Rust by Example - Strings

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