如何更改集合项的值 [英] How to change value of an item of a collection
问题描述
使用此代码(在 excel-vba 中),我根据数组将多个项目添加到集合中.
我使用数组的值作为键,字符串NULL"作为添加的每个项目的值.
With this code (in excel-vba) I add to a collection a number of items depending on an array.
I use the value of the array as key and the string "NULL" as value for each item added.
Dim Coll As New collection
Dim myArr()
Set Coll = New collection
myArr() = Array("String1", "String2", "String3")
For i = LBound(myArr) To UBound(myArr)
Coll.Add "NULL", myArr(i)
Next i
现在,如果我想更改一个项目的值,通过键识别它,我必须删除该项目,然后添加一个具有相同键的项目,或者是否可以更改项目值?
Now, if I want to change the value of an item, identifying it by the key, I must remove the item and then add an item with same key or is it possible to change the item value?
下面是唯一的方法吗?
Coll.Remove "String1"
Coll.Add "myString", "String1"
或者是否有类似的东西:(我知道那行不通)
Or is there something like: (I know that doesn't work)
Coll("String1") = "myString"
推荐答案
您还可以编写(公共)函数来更新集合.
You can also write a (public) function to make updates to a collection.
public function updateCollectionWithStringValue(coll as Collection, key as string, value as string) as collection
coll.remove key
coll.add value, key
set updateCollectionWithStringValue = coll
end function
您可以通过以下方式调用此函数:
You can invoke this function by:
set coll = updateCollectionWithStringValue(coll, "String1","myString")
然后你有一个单行代码可以调用.
Then you have a one liner to invoke.
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