如何判断是否是 ValueTuple 型

🏷️ C#

public static class TupleExtensions
{
    private static readonly HashSet<Type> ValueTupleTypes = new HashSet<Type>(new Type[]
    {
        typeof(ValueTuple<>),
        typeof(ValueTuple<,>),
        typeof(ValueTuple<,,>),
        typeof(ValueTuple<,,,>),
        typeof(ValueTuple<,,,,>),
        typeof(ValueTuple<,,,,,>),
        typeof(ValueTuple<,,,,,,>),
        typeof(ValueTuple<,,,,,,,>)
    });

    public static bool IsValueTuple(this object obj) => IsValueTupleType(obj.GetType());
    public static bool IsValueTupleType(this Type type)
    {
        return type.GetTypeInfo().IsGenericType && ValueTupleTypes.Contains(type.GetGenericTypeDefinition());
    }

    public static List<object> GetValueTupleItemObjects(this object tuple) => GetValueTupleItemFields(tuple.GetType()).Select(f => f.GetValue(tuple)).ToList();
    public static List<Type> GetValueTupleItemTypes(this Type tupleType) => GetValueTupleItemFields(tupleType).Select(f => f.FieldType).ToList();    
    public static List<FieldInfo> GetValueTupleItemFields(this Type tupleType)
    {
        var items = new List<FieldInfo>();

        FieldInfo field;
        int nth = 1;
        while ((field = tupleType.GetRuntimeField($"Item{nth}")) != null)
        {
            nth++;
            items.Add(field);
        }

        return items;
    }
}

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原文:StackOverflow

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