[RESOLVED] IIf = worst function ever written?

[Frodo_Baggins]

I just read the above statement somewhere...
Why is IIf so... bad?

[eyeRmonkey]

Well, I havn't used it in VB, but I used its equivelant in JavaScript a lot. I like it. Maybe it uses a lot of resources? Though I doubt it. Maybe the person was just angry at the world?

[Black__Knight]

Hi,

You can check this thread out for the debate:

http://www.vbforums.com/showthread.p...&highlight=iif

Have a good one!
BK

[MartinLiss]

The reason IIF is bad/slow is that it always evaluates both sides of the equation even if the first part is found to be True.

[Frodo_Baggins]

Alright haha

[Jacob Roman]

Yeah, I even proved that If...ElseIf statements are faster than Select Case.

[Jacob Roman]

Also, I believe that DoEvents is the worse function ever written, although it is needed to get events going. I prefer API's over DoEvents using the same code that C++ uses in loops.

DoEvents bogs down a loops speed tremendously. They should have optimized this when Microsoft made VB.

[RhinoBull]

Also, I believe that DoEvents is the worse function ever written, ... They should have optimized this when Microsoft made VB

I agree ... in general ...

... I prefer API's over DoEvents using the same code that C++ uses in loops. ...

... which is ... ???

[Jacob Roman]

The PeekMessage, TranslateMessage, and DispatchMessage API's, used like so:

If PeekMessage(MSG, 0, 0, 0, PM_REMOVE) Then
                    
            If MSG.message = WM_QUIT Then Exit Function
                    
            TranslateMessage MSG
            DispatchMessage MSG
        
        End If

Of course your gonna need some constants and a User Defined Type called Message (MSG was declared Message).

Here's some links with a description of them with a code example in the Classical link:

TranslateMessage
DispatchMessage
PeekMessage

[RhinoBull]

... Of course your gonna need some constants and a User Defined Type called Message ...

Indeed, indeed ... I was just playng plain stupid so some people would benefit ... Thanks for your reply!

[Jacob Roman]

Anytime

[penagate]

You should use GetMessage rather than PeekMessage, otherwise your message can get dispatched twice.

Do While GetMessage(udtMsg, 0, 0, 0)
    TranslateMessage udtMsg
    DispatchMessage udtMsg
Loop