“Do While” “Loop” and “While” “Wend” Loop. What's the difference?

Question

Reading some answers in stackoverflow I saw a while wend loop. I\'m used to the do while loop, so I was wondering what wo

Answer 1

I don't think there is much of a difference in their execution other than the syntactical options that While Wendis not capable of:

Do
    someCode
While (someCondition)

As for speed, I did a simple test:

Sub whileLoopTest()
Dim i As Long, j As Long
Dim StartTime As Variant

i = 1
StartTime = Timer

While (i < 500000000)
    j = i + 2
    i = i + 1
Wend

Debug.Print "While execution time: " & Timer - StartTime
End Sub


Sub doWhileTest()
Dim i As Long, j As Long
Dim StartTime As Variant

i = 1
StartTime = Timer

Do While (i < 500000000)
    j = i + 2
    i = i + 1
Loop

Debug.Print "Do While execution time: " & Timer - StartTime
End Sub

Results:

While execution time: 6,429688  
While execution time: 6,429688
While execution time: 6,441406
Do While execution time: 6,429688
Do While execution time: 6,449219
Do While execution time: 6,4375