rustrust string append

Rust strings are immutable, meaning that once created, they cannot be changed. However, it is possible to append a string to an existing string using the push_str() method.

Example code

let mut s = String::from("Hello");
s.push_str(", world!");

Output example

Hello, world!

The code above creates a String object called s and assigns it the value Hello. The push_str() method is then used to append the string , world! to the existing string. The result is a new string with the value Hello, world!.

The push_str() method takes a &str as an argument, so it is possible to append a string literal or a string slice to an existing string.

Helpful links

• Rust Documentation - Strings
• Rust by Example - Strings

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