Wish B4X IIF Function

[Erel]

2 - it is better not to use literals (10 and "Invalid number")

I partly agree.
B4X is a RAD tool, we shouldn't be "purists".

 

[MrKim]

Not if you test it with:

Label1.Text = IIf(IsNumber(EditText1.Text), EditText1.Text * 10, "Invalid number")

Good to know, actually, because as I recall in VBA you can't do that because IIF evaluates ALL of the responses, even if they are not used. So your example would fail with an invalid number.

 

[Alexander Stolte]

because as I recall in VBA you can't do that because IIF evaluates ALL of the responses

Yes, your memory has worked properly. That falls on my feet every time.

 

[WhiteWizard]

Why not CHOOSE(condition,trueval,falseval) ?, there is no need to be cryptic.

 

[LucaMs]

Why not CHOOSE(condition,trueval,falseval) ?, there is no need to be cryptic.

IIF is an existing .Net function.
CHOOSE also exists, although I don't understand its usefulness, since it corresponds to:

Public Sub Choose(Index As Int, Values() As Object) As Object
    Return Values(Index)
End Sub

Why not write directly:

Dim MyVariable As Int = Values(SomeIndex)

?

 

[WhiteWizard]

Pity about the CHOOSE operator, I'm a Clarion programmer and I like that minimalistic languaje, for ex, we only have a LOOP command for LOOPs:
LOOP F = 1 TO N (BY step)
. (or END at your preference)
LOOP UNTIL/WHILE
just LOOP.

 

[LucaMs]

Pity about the CHOOSE operator, I'm a Clarion programmer and I like that minimalistic languaje, for ex, we only have a LOOP command for LOOPs:
LOOP F = 1 TO N (BY step)
. (or END at your preference)
LOOP UNTIL/WHILE
just LOOP.

Well, having two distinct:

For Each...

Do Until/While...

I think is better, more easily readable and logical.

 

[MrKim]

It's here (almost)! https://www.b4x.com/android/forum/threads/b4j-v9-10-beta-is-available-for-download.132170/