32 lines
1.2 KiB
C#
32 lines
1.2 KiB
C#
// using System.Diagnostics.CodeAnalysis;
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// using System.Runtime.CompilerServices;
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// namespace SJK.Functional;
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// public sealed class None<T> : IOption<T>
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// {
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// public static None<T> Of() => new();
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// [MethodImpl(MethodImplOptions.AggressiveInlining)]
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// public TResult Match<TResult>(Func<T, TResult> _, Func<TResult> onNone) =>
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// onNone();
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// [MethodImpl(MethodImplOptions.AggressiveInlining)]
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// public void Match(Action<T> onSome, Action onNone) => onNone();
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// [MethodImpl(MethodImplOptions.AggressiveInlining)]
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// public IOption<TResult> Bind<TResult>(Func<T, IOption<TResult>> f) => new None<TResult>();
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// [MethodImpl(MethodImplOptions.AggressiveInlining)]
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// public IOption<TResult> Map<TResult>(Func<T, TResult> f) => new None<TResult>();
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// [MethodImpl(MethodImplOptions.AggressiveInlining)]
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// public T Or(T aDefault) => aDefault;
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// public T Or(Func<T> aDefault)=>aDefault();
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// public bool HasValue([NotNullWhen(true)]out T? value) => (value = default) is not null && false;
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// public bool HasValue() => false;
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// public override string ToString()
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// {
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// return nameof(None<T>);
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// }
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// public bool Equals(IOption<T>? other)=> other is None<T>;
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// }
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