What is character.is_ascii_alphanumeric() in Rust?
Overview
Alphanumeric characters are the combined set of 26 alphabetic characters A to Z, and the 10 Arabic numerals, 0 to 9. ASCII is an encoding system for information interchange. As we share information between computers, data is encoded, especially in ASCII. With the is_ascii_alphanumeric() method, we can check if a character is an ASCII alphanumeric character.
Syntax
character.is_ascii_alphanumeric()
Syntax for is_ascii_alphanumeric() method in Rust
Parameters
character: This is the character we want to find out if it is an ASCII alphanumeric character or not.
Return value
This method returns a Boolean value. If the character is an ASCII alphanumeric character, then a true is returned; otherwise, a false is returned.
Example
fn main(){// initialise some characterslet char1 = 'E';let char2 = '+';let char3 = '=';let char4 = '3';let char5 = '!';// check if characters are alphanumericprintln!("{}", char1.is_ascii_alphanumeric());println!("{}", char2.is_ascii_alphanumeric());println!("{}", char3.is_ascii_alphanumeric());println!("{}", char4.is_ascii_alphanumeric());println!("{}", char5.is_ascii_alphanumeric());}
Explanation
- Lines 3–7: We initialize some characters. Some of them are alphanumeric and others are not.
- Line 10–14: We check if the characters are ASCII alphanumeric using the
is_ascii_alphanumeric()method. Then we print the result to the console.