rustFormat string arguments in Rust

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Formatting string arguments in Rust is done using the format! macro. This macro takes a format string and a list of arguments and returns a String object. The format string can contain placeholders for the arguments, which are then replaced with the corresponding values.

Code example:

let name = "John";
let age = 30;
let message = format!("Hello, my name is {}, and I am {} years old.", name, age);
println!("{}", message);

Output

Hello, my name is John, and I am 30 years old.

Explanation of Code Parts:

1. let name = "John"; - This line declares a variable called name and assigns it the value of the string "John".
2. let age = 30; - This line declares a variable called age and assigns it the value of the integer 30.
3. let message = format!("Hello, my name is {}, and I am {} years old.", name, age); - This line uses the format! macro to create a String object called message. The format string contains two placeholders, {}, which are replaced with the values of the variables name and age.
4. println!("{}", message); - This line prints the value of the message variable to the console.

Helpful links:

1. Rust Documentation - format!
2. Rust by Example - format!

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