namespace System;
/// `u64`'s members, as .NET's `System.UInt64`: a whole number.
[Intrinsic]
[Host]
public readonly struct UInt64 : IComparable<u64>, IEquatable<u64> {
public static readonly u64 MinValue;
public static readonly u64 MaxValue;
/// `s` read as one; a panic when it isn't one.
public static u64 Parse(string s);
/// `s` read as one, or `null` when it isn't one.
public static u64? TryParse(string s);
public i32 CompareTo(u64 value);
public bool Equals(u64 obj);
public override string ToString();
/// Written by .NET format string `format` (`F2`, `N0`, `X8`, `0.00`), invariant culture.
public string ToString(string format);
}