rustrust string capitalize

Rust strings can be capitalized using the to_uppercase() method. This method returns a new string with all characters in uppercase.

Example

let s = "hello world";
let uppercase = s.to_uppercase();
println!("{}", uppercase);

Output example

HELLO WORLD

The to_uppercase() method takes no parameters and is part of the std::string::String type. It is a mutable method, meaning it changes the string in place.

Code explanation

• let s = "hello world": This line declares a string variable s and assigns it the value "hello world".
• let uppercase = s.to_uppercase(): This line calls the to_uppercase() method on the s string variable, and assigns the result to the uppercase variable.
• println!("{}", uppercase): This line prints the value of the uppercase variable to the console.

Helpful links

• Rust Strings Documentation

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