Peek()
OutputVar := instance.Peek()
Returns the object at the beginning of the MfQueue without removing it.
Returns The object at the beginning of the MfQueue.
Throws MfInvalidOperationException if the MfQueue is empty.
If current Peek value is a null or empty then Null is returned.
NL := MfEnvironment.Instance.NewLine ; put new Line into var for easy access
MyQueue := new MfQueue()
; Add objects to the Queue
loop, 10
{
MyQueue.Enqueue(new MfString(MfString.Format("This is item number '{0}' in the Queue."
, A_Index)))
}
try
{
peekVar := MyQueue.Peek() ; get the first item without removing it
if (MfNull.IsNull(peekVar)) {
MsgBox, 48, Null, The First value in the Queue is Empty
} else if (MfObject.IsObjInstance(peekVar)) {
MsgBox, 64, Info, % "The value of the first item in the Queue is" . NL . peekVar.ToString()
}
} catch e {
; if MyQueue is empty a MfInvalidOperationException error will be thrown
MsgBox, 16, Error, % "An Error has Occured" . NL e.Message
}
ExitApp