how to detremen if x is even or a odd number ??

[seaweed]

Just so you know:

If performance is an issue at all for you, NEVER use Immediate If statements! They take at least 7.6 times as long to process as regular If Then statements.

If you don't believe me, try this...

Start a new project, paste this code into the form's code window, and run the project:

Option Explicit

Private Sub Form_Load()
    Dim StartTime As Double     'Stores time at start of test
    Dim EndTime As Double       'Stores time at end of test
    Dim Result As Boolean       'Holds result of IIf
    Dim nCounter As Long        'Counter to run test 1 million times
    
    'Show form, tell user to wait
    Me.Show
    Print
    Print "  Please wait while running tests..."
    Print
    DoEvents
    
    '********************'
    ' Immediate If Test: '
    '********************'
    
    'Get start time for IIf test
    StartTime = CDbl(Timer)
    
    'Run IIf 1 million times
    For nCounter = 1 To 1000000
        Result = IIf(True, True, False)
    Next nCounter
    
    'Get end time for IIf test
    EndTime = CDbl(Timer)
    
    'Print difference between start time and end time
    Print "  Time for IIf: " & EndTime - StartTime
    Print
    
    '********************'
    '    If/Then Test:   '
    '********************'
    
    'Get start time for If/Then test
    StartTime = CDbl(Timer)
    
    'Run If/Then 1 million times
    For nCounter = 1 To 1000000
        If True Then
            Result = True
        Else
            Result = False
        End If
    Next nCounter
    
    'Get end time for If/Then test
    EndTime = CDbl(Timer)

    'Print difference between start time and end time
    Print "  Time for If/Then: " & EndTime - StartTime
    
End Sub

I just thought you guys might be interested...

~seaweed

[pardede]

It's quite true what seaweed says. In fact, IIf examines and executes both statements in the truepart and falsepart of the evaluation, while If executes only the relevant part. So quite obviously IIf takes almost twice as much time to execute that regular If

[Gen-X]

You guys waste a lot of code determing if a number is odd or even ;-)

Public Function IsEven(Number as Integer) As Boolean
  IsEven = (Number mod 2 = 0)
End Function

Now you know it has to be one or the other so if it returns false you know what to do.

[kedaman]

OK, I knew everyone would give me that comment, but I just wanted to show how to use IIf. But in case of use with Msgbox, and other not so performance needing procedures, there's no practical difference. But I suppose if x mod 2 would be the best here.