How to check if a character is in lowercase in Rust
Overview
We can check if a character is in lowercase in Rust by using the is_lowercase() method. This method returns a Boolean value. If the character is lowercase, then a true is returned, otherwise false.
Syntax
character.is_lowercase()
Syntax to check if a character is lowercase in Rust
Parameters
There is only one parameter:
character: This is the character we want to check if it is in lowercase.
Return value
A Boolean value true or false is returned.
Example
fn main(){// create some characterslet char1 = 'E';let char2 = 'c';let char3 = 'X';let char4 = 'r';let char5 = '6';// check if characters are lowercaseprintln!("{}", char1.is_lowercase());println!("{}", char2.is_lowercase());println!("{}", char3.is_lowercase());println!("{}", char4.is_lowercase());println!("{}", char5.is_lowercase());}
Explanation
- Lines 3–7: We create some characters.
- Lines 10–14: We use the
is_lowercase()method to see if some of the characters created were lowercase, then we print the results.
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