UInt64

public struct System.UInt64 : System.INumber<u64>, System.IHashable<u64>, System.IComparable<u64>, System.IToString
{
    // The smallest u64.
    static constant MinValue: u64
    // The largest u64.
    static constant MaxValue: u64
    static method FromF64(value: f64) -> u64
    static method ToF64(value: u64) -> f64
    // As text by a format: D, X, B, N, F, E, P, G and a precision (`255.ToString("X4")` is "00FF").
    method ToString(format: System.String<u8>) -> System.String<u8>
    method ToString() -> System.String<u8>
    method Hash() -> u64
    method Equals(other: u64) -> bool
    method CompareTo(other: u64) -> i32
    static property Zero: u64
    static property One: u64
}