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rustHow to format const string in Rust


Rust provides a number of ways to format const strings. The most common way is to use the format! macro. This macro takes a format string and a list of arguments and returns a String object.

Code example:

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

Output

My name is John, and I am 30 years old.

Explanation:

  1. The format! macro takes a format string and a list of arguments and returns a String object.
  2. The format string is a string literal that contains placeholders for the arguments. The placeholders are surrounded by curly braces {}.
  3. The arguments are passed after the format string and are separated by commas.
  4. The println! macro is used to print the formatted string to the console.

Helpful links:

  1. https://doc.rust-lang.org/std/macro.format.html
  2. https://doc.rust-lang.org/std/macro.println.html

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