.NET Framework 3.5 용 Tuple (.NET 4)에 해당

.NET Framework 3.5 용 Tuple (.NET 4)에 해당

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.NET 4 Tuple에 해당하는 .NET Framework 3.5에 클래스가 있습니까?

을 만드는 대신 메서드에서 여러 값을 반환하기 위해 사용하고 싶습니다 struct.

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아니요, .Net 3.5에는 없습니다. 그러나 자신의 것을 만드는 것은 그렇게 어렵지 않습니다.

public class Tuple<T1, T2>
{
    public T1 First { get; private set; }
    public T2 Second { get; private set; }
    internal Tuple(T1 first, T2 second)
    {
        First = first;
        Second = second;
    }
}

public static class Tuple
{
    public static Tuple<T1, T2> New<T1, T2>(T1 first, T2 second)
    {
        var tuple = new Tuple<T1, T2>(first, second);
        return tuple;
    }
}

업데이트 : 유형 추론을 허용하기 위해 정적 항목을 정적 클래스로 이동했습니다. 업데이트를 통해 다음과 같은 var tuple = Tuple.New(5, "hello");것을 작성할 수 있으며 암시 적으로 유형을 수정합니다.

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나는 4 이전 프로젝트에서 이것을 사용하고 있습니다.

public class Tuple<T1>  
{ 
    public Tuple(T1 item1) 
    { 
        Item1 = item1; 
    }   

    public T1 Item1 { get; set; }  
} 

public class Tuple<T1, T2> : Tuple<T1>  
{ 
    public Tuple(T1 item1, T2 item2) : base(item1) 
    { 
        Item2 = item2; 
    } 

    public T2 Item2 { get; set; }  
} 

public class Tuple<T1, T2, T3> : Tuple<T1, T2>  
{ 
    public Tuple(T1 item1, T2 item2, T3 item3) : base(item1, item2) 
    { 
        Item3 = item3; 
    } 

    public T3 Item3 { get; set; }  
} 

public static class Tuple  
{ 
    public static Tuple<T1> Create<T1>(T1 item1) 
    { 
        return new Tuple<T1>(item1); 
    } 

    public static Tuple<T1, T2> Create<T1, T2>(T1 item1, T2 item2) 
    { 
        return new Tuple<T1, T2>(item1, item2); 
    } 

    public static Tuple<T1, T2, T3> Create<T1, T2, T3>(T1 item1, T2 item2, T3 item3) 
    { 
        return new Tuple<T1, T2, T3>(item1, item2, item3); 
    }  
}

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.Net 4.0과 기능이 동일해야하는 경우 (주로 비교) :

static class Tuple
{
    public static Tuple<T1, T2> Create<T1, T2>(T1 item1, T2 item2)
    {
        return new Tuple<T1, T2>(item1, item2);
    }
}

[DebuggerDisplay("Item1={Item1};Item2={Item2}")]
class Tuple<T1, T2> : IFormattable
{
    public T1 Item1 { get; private set; }
    public T2 Item2 { get; private set; }

    public Tuple(T1 item1, T2 item2)
    {
        Item1 = item1;
        Item2 = item2;
    }

    #region Optional - If you need to use in dictionaries or check equality
    private static readonly IEqualityComparer<T1> Item1Comparer = EqualityComparer<T1>.Default;
    private static readonly IEqualityComparer<T2> Item2Comparer = EqualityComparer<T2>.Default;

    public override int GetHashCode()
    {
        var hc = 0;
        if (!object.ReferenceEquals(Item1, null))
            hc = Item1Comparer.GetHashCode(Item1);
        if (!object.ReferenceEquals(Item2, null))
            hc = (hc << 3) ^ Item2Comparer.GetHashCode(Item2);
        return hc;
    }
    public override bool Equals(object obj)
    {
        var other = obj as Tuple<T1, T2>;
        if (object.ReferenceEquals(other, null))
            return false;
        else
            return Item1Comparer.Equals(Item1, other.Item1) && Item2Comparer.Equals(Item2, other.Item2);
    }
    #endregion

    #region Optional - If you need to do string-based formatting
    public override string ToString() { return ToString(null, CultureInfo.CurrentCulture); }
    public string ToString(string format, IFormatProvider formatProvider)
    {
        return string.Format(formatProvider, format ?? "{0},{1}", Item1, Item2);
    }
    #endregion
}

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NetLegacySupport.Tuple너겟을 통해 설치할 수 있습니다 . 이것은 .Net 4.5에서 .Net 2.0 및 3.5로 백 포트 된 Tuple 클래스입니다.

You can install this via the package manager in Visual Studio or using nuget on the commandline.

Here is the nuget package:

https://www.nuget.org/packages/NetLegacySupport.Tuple

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Yes, there is a class called System.Collections.Generic.KeyValuePair that does the same thing (since .NET 2.0 I think).

http://msdn.microsoft.com/en-us/library/5tbh8a42.aspx

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Yes, you can just use Tuple.cs from mono:

You require the dependencies as well:
Tuples.cs
IStructuralComparable.cs
IStructuralEquatable.cs

You just put a

#define NET_4_0

in front of every

#if NET_4_0

and there you go, a feature-complete implementation of System.Tuple for .NET 2.0.

참고URL : https://stackoverflow.com/questions/7120845/equivalent-of-tuple-net-4-for-net-framework-3-5