Stage 7.15: Useful String Methods

Ferris will show you some useful string methods:

• "".replace(from, to) - to replace a part of a string
• "".len() - to get the length of a string
• "".pop() - remove the last character and returns it
• "".push_str() - append a string at the end
• "".trim() - remove leading and trailing whitespaces. There are also more specific trim methods
• "".to_lowercase() - transform all letters to lowercase
• "".to_uppercase() - transform all letters to uppercase
• "".is_empty() - returns true if the string is empty (length of zero)
• &""[M..N] - substrings are done with the index operator [M..N]

Further information:

• https://doc.rust-lang.org/std/string/struct.String.html#implementations