pub fn get_extension(path: &str) -> Option<String>Expand description
Get file extension in lowercase
ยงExample
assert_eq!(get_extension("file.TXT"), Some("txt".to_string()));
assert_eq!(get_extension("data.csv"), Some("csv".to_string()));
assert_eq!(get_extension("no_extension"), None);
assert_eq!(get_extension(".hidden"), None);