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Mark Clearwater
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namespace Beefeater |
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{
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public struct Option<T> |
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{
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private readonly T _value;
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public Option(T value) : this() |
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{
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if (value != null)
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{
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HasValue = true;
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_value = value; |
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} |
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} |
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public T ValueOr(T fallbackValue)
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{
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return !HasValue ? fallbackValue : _value;
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} |
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public static Option<T> None => new Option<T>(); |
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public bool HasValue { get; } |
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public static implicit operator Option<T>(T item) |
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{
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return new Option<T>(item); |
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} |
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public static explicit operator T(Option<T> option) |
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{
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if (option.HasValue)
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{
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return option._value;
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} |
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throw new PanicException(); |
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} |
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} |
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} |
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