In this article we will learn about some of the frequently asked Visual Basic programming questions in technical like “excel vba queue” Code Answer. When creating scripts and web applications, error handling is an important part. If your code lacks error checking code, your program may look very unprofessional and you may be open to security risks. Error handling in VBA is simple. An error message with filename, line number and a message describing the error is sent to the browser. This tutorial contains some of the most common error checking methods in Visual Basic. Below are some solution about “excel vba queue” Code Answer.
excel vba queue
'VBA does not include a native QUEUE (FIFO: FIRST-In-FIRST-Out) memory
'structure. It is possible to implement a QUEUE using nothing but a native
'array or collection.
'However, the easiest solution is to have VBA create and use a .NET Queue:
Set Queue = CreateObject("System.Collections.Queue")
MsgBox Queue.Dequeue '<--displays: I
'Note: Dequeue() removes the bottom (first-added) item from the Queue.
' Peek() will return the bottom value without removing it:
MsgBox Queue.Peek '<--displays: was
MsgBox Queue.Count '<--displays: 2. Count() returns 0 if Stack empty.
MsgBox Queue.Contains("I") '<--displays: False
'Queue to 1D VBA array (zero based):
arr = Queue.toArray
MsgBox arr(0) '<--displays: was Queue is unaltered.
'Clone the Queue:
Set Queue2 = Queue.Clone '<--Queue is not affected by ops on Stack.
'Empty the Queue:
Queue.Clear '<--Stack now empty, but can take a new Push().
'NB: Queues can hold simple values and also complex objects.