如何更改集合项目的价值 [英] How to change value of an item of a collection
问题描述
使用此代码(在excel-vba中),我根据数组将许多项添加到集合中。
我将数组的值用作键,并将字符串 NULL用作值
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,如果我想更改项目的值,通过键对其进行标识,我必须删除该项目,然后添加具有相同密钥的项目,还是可以更改项目的值?
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?
这是唯一的方法吗?
Coll.Remove "String1"
Coll.Add "myString", "String1"
还是有类似的东西:(我知道那不起作用)
Or is there something like: (I know that doesn't work)
Coll("String1") = "myString"
推荐答案
Yo您还可以编写一个(公共)函数来对集合进行更新。
You can also write a (public) function to make updates to a collection.
public function updateCollectionWithStringValue(coll ax 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,您需要调用一个班轮。
Then you have a one liner to invoke.
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