Number

// Numbers as text and back.
public class System.Number : System.Any
{
    // The digits of `top`, then 19 for each of parts[count - 1] … parts[0] (with their leading zeros).
    static method Chunked(top: u64, parts: u64[], count: i32) -> System.String<u8>
    // The decimal digits of `value` (with a '-' when negative).
    static method Format(value: i64) -> System.String<u8>
    // The decimal digits of `value`.
    static method FormatUnsigned(value: u64) -> System.String<u8>
    // The decimal digits of a 128-bit `value`: 19 digits at a time (one division by 10^19 for each, the digits
    // of each part from a u64).
    static method FormatUnsigned(value: u128) -> System.String<u8>
    // The decimal digits of a 256-bit `value`: 19 digits at a time, as for 128 bits.
    static method FormatUnsigned(value: u256) -> System.String<u8>
    // How many decimal digits `value` has (1 for 0).
    static method DigitCount(value: u64) -> i32
    // Writes the digits of `value` so they end just before `end`.
    static method WriteDigits(value: u64, units: u8[], end: i32) -> void
    // The integer `text` writes (an optional '-', then decimal digits); a FormatError otherwise.
    static method Parse(text: System.String<u8>) -> i64
    // The integer `text` writes (an optional '-', then decimal digits), or null.
    static method TryParse(text: System.String<u8>) -> i64?
}