use std::path::Path;
pub fn get_letters() -> Vec<String> {
HARD_DRIVE_NAMES
.iter()
.filter(|name| Path::new(name).exists())
.map(|name| name.to_string())
.collect()
}
static HARD_DRIVE_NAMES: [&str; 26] = [
"A:\\", "B:\\", "C:\\", "D:\\", "E:\\",
"F:\\", "G:\\", "H:\\", "I:\\", "J:\\",
"K:\\", "L:\\", "M:\\", "N:\\", "O:\\",
"P:\\", "Q:\\", "R:\\", "S:\\", "T:\\",
"U:\\", "V:\\", "W:\\", "X:\\", "Y:\\",
"Z:\\",
];