37 lines
1.4 KiB
C#
37 lines
1.4 KiB
C#
using System.Diagnostics.Contracts;
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namespace InnovEnergy.Lib.Utils;
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// taken from https://github.com/louthy/language-ext/blob/main/LanguageExt.Core/DataTypes/Unit/Unit.cs
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/// <summary>
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/// A unit type is a type that allows only one value (and thus can hold no information)
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/// </summary>
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[Serializable]
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public readonly struct None : IEquatable<None>, IComparable<None>
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{
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// ReSharper disable once InconsistentNaming
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public static readonly None none = new None();
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[Pure] public override Int32 GetHashCode() => 0;
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[Pure] public override Boolean Equals(Object? obj) => obj is None;
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[Pure] public override String ToString() => "<none>";
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[Pure] public Boolean Equals(None other) => true;
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[Pure] public static Boolean operator ==(None lhs, None rhs) => true;
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[Pure] public static Boolean operator !=(None lhs, None rhs) => false;
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[Pure] public static Boolean operator > (None lhs, None rhs) => false;
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[Pure] public static Boolean operator >=(None lhs, None rhs) => true;
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[Pure] public static Boolean operator < (None lhs, None rhs) => false;
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[Pure] public static Boolean operator <=(None lhs, None rhs) => true;
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[Pure] public Int32 CompareTo(None other) => 0;
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[Pure] public static None operator +(None a, None b) => none;
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[Pure] public static implicit operator ValueTuple(None _) => default;
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[Pure] public static implicit operator None(ValueTuple _) => default;
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}
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