rustFormat string at runtime in Rust

Formatting strings at runtime in Rust can be done using the format! macro. This macro allows you to create a formatted string using the same syntax as println! and print!.

Example:

let name = "John";
let age = 30;

println!("{} is {} years old", name, age);
// ### Output John is 30 years old

Explanation:

• let name = "John";: This line declares a variable name and assigns it the value "John".
• let age = 30;: This line declares a variable age and assigns it the value 30.
• println!("{} is {} years old", name, age);: This line uses the println! macro to print a formatted string. The {} are placeholders for the values of name and age which are passed as arguments to the macro.

Output

John is 30 years old

Helpful links:

• Rust Documentation - Macros
• Rust Documentation - Formatting

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