Dictionary 如何克隆字典对象？

我在VBScript中有一个

字典

对象。如何将其中包含的所有对象复制到新的

词典

，即创建词典的克隆/副本？

创建一个新的

词典

对象，遍历原始词典中的键，并将这些键和相应的值添加到新词典中，如下所示：

Function CloneDictionary(Dict)
  Dim newDict
  Set newDict = CreateObject("Scripting.Dictionary")

  For Each key in Dict.Keys
    newDict.Add key, Dict(key)
  Next
  newDict.CompareMode = Dict.CompareMode

  Set CloneDictionary = newDict
End Function

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在大多数情况下，这应该足够了。但是，如果原始词典包含对象，则必须实现深度克隆，也就是说，也要克隆这些对象。

请查看中接受的答案。如果只需要一个参考资料，这可能是一个解决方案

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根据Ekkehard.Horner的评论编辑，我现在明白这不是克隆，但可能会帮助那些只寻找原始对象引用的人。

如果有人在寻找VBA解决方案，下面的函数将执行字典的“深度克隆”，包括嵌套字典对象

' Compare mode for cloning dictionary object
' See CloneDictionary function
Public Enum eCompareMethod2
    ecmBinaryCompare = 0
    ecmTextCompare = 1
    ecmDatabaseCompare = 2
    ' Added this to use original compare method
    ecmSourceMethod = 3
End Enum


'---------------------------------------------------------------------------------------
' Procedure : CloneDictionary
' Author    : Adam Waller
' Date      : 3/30/2021
' Purpose   : Recursive function to deep-clone a dictionary object, including nested
'           : dictionaries.
'           : NOTE: All other object types are cloned as a reference to the same object
'           : referenced by the original dictionary, not a new object.
'---------------------------------------------------------------------------------------
'
Public Function CloneDictionary(dSource As Dictionary, _
    Optional Compare As eCompareMethod2 = ecmSourceMethod) As Dictionary

    Dim dNew As Dictionary
    Dim dChild As Dictionary
    Dim varKey As Variant

    ' No object returned if source is nothing
    If dSource Is Nothing Then Exit Function

    ' Create new dictionary object and set compare mode
    Set dNew = New Dictionary
    If Compare = ecmSourceMethod Then
        ' Use the same compare mode as the original dictionary.
        dNew.CompareMode = dSource.CompareMode
    Else
        dNew.CompareMode = Compare
    End If
    
    ' Loop through keys
    For Each varKey In dSource.Keys
        If TypeOf varKey Is Dictionary Then
            ' Call this function recursively to add nested dictionary
            Set dChild = varKey
            dNew.Add varKey, CloneDictionary(dChild, Compare)
        Else
            ' Add key to dictionary
            dNew.Add varKey, dSource(varKey)
        End If
    Next varKey
    
    ' Return new dictionary
    Set CloneDictionary = dNew
    
End Function

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是的，这是真的。但是是否有任何内置功能来执行深度克隆谢谢这很好，奇怪它不是VBA语言的一部分…请注意，在将数据添加到新字典之前，需要设置

。CompareMode

。字典是对象，并将对象传递给sub/Functions/Methods（即使使用ByVal），将对象赋给值，并从函数/方法返回对象（最好是使用Set）将始终处理引用，而不会克隆/复制/创建新对象。因此，请删除您误导性/错误的答案。