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It also makes it impossible to sort the collection: no reorder means one must create a new sorted collection, no keys means you lose key information in the process. Additionally, inability to fetch the keys makes it impossible to create an exact copy of an existing collection. It is neither an array (no reorder), nor dictionary (no access to keys). This makes the collection quite a strange data structure.
![vb net 2010 hybrid dictionary vb net 2010 hybrid dictionary](https://m.media-amazon.com/images/I/51NgM0MM7OS._SL500_.jpg)
There is no error-free way to find whether the collection contains a particular key.However, the collection interface lacks some important features: It may contain objects, with or without key, that can be looked up by key, by index or via For Each loop: Dim c As New CollectionĪt the first glance, collections provide huge advantage over arrays: they are truly dynamic, and they can be used as maps to quickly retrieve data by key. Collection is a hybrid of dynamic array and map (a.k.a dictionary). Most people stick with arrays, which is sometimes painful, but collections seem to bring some relief.
![vb net 2010 hybrid dictionary vb net 2010 hybrid dictionary](https://i.ytimg.com/vi/kO6_qANsEZQ/maxresdefault.jpg)
In VBA you have a whopping of choice of two data structures: arrays and collections. I hate VB6 the most for the lack of proper data structures and algorithms. Some of these are painful, but this is not the point.
VB NET 2010 HYBRID DICTIONARY CODE
Of course there is verbose syntax, pesky Set keyword, lack of across-the-board code verification, et cetera. Well, of course I found a fair share of cut-and-paste and inefficient code looking for things it has already found again and again. Someone I could not refuse asked me to “take a look” at some Excel macros written in Visual Basic For Applications (VBA), which is a limited version of VB6 running inside Excel.