Function column_number_to_name 

pub fn column_number_to_name(num: u32) -> Result<String>

Convert a 1-based column number to its letter name.

Examples

use sheetkit_core::utils::cell_ref::column_number_to_name;

assert_eq!(column_number_to_name(1).unwrap(), "A");
assert_eq!(column_number_to_name(26).unwrap(), "Z");
assert_eq!(column_number_to_name(27).unwrap(), "AA");
assert_eq!(column_number_to_name(16384).unwrap(), "XFD");