_IIF limits two questions - Printable Version

_IIF limits two questions - Printable Version

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_IIF limits two questions - doppler - 12-20-2024

1.
Is the new _IIF limited to only numerics ? Or can I play with strings too ?

2. Can this statement be on one line: p=_iff(p=instr(thing$,"\"): p <= 10, p, p=0)
re: position of "\" must be less than 11 else make it zero

Question two in my mind very iffy. If question #1 is true.
Don't need an code answer for question 2. I could do that in my sleep.
Just thought sub-coding might be possible in a coded line.

RE: _IIF limits two questions - Petr - 12-20-2024

Hi,

In the last two parameters of the function you set its output values. The first for true, the second for false.

Code: (Select All)



a$ = "YES"



result = _IIf(a$ = "YES", 100, 0)



Select Case result

    Case 0: Print "a$ is not YES"

    Case 100: Print "a$ is YES"

End Select

RE: _IIF limits two questions - bplus - 12-20-2024

(12-20-2024, 07:06 PM)doppler Wrote: 2. Can this statement be on one line: p=_iff(p=instr(thing$,"\"): p <= 10, p, p=0)
re: position of "\" must be less than 11 else make it zero

How about:
p=_iff(instr(thing$,"\") <= 10, instr(thing$,"\"), 0)

RE: _IIF limits two questions - Pete - 12-20-2024

If iff works with strings why didn't they just name it _stiff?

Pete

- We missed _hitkey by that much!

RE: _IIF limits two questions - Pete - 12-21-2024

Petr's example as a string I think would be...

Code: (Select All)

Dim result as String

a$ = "Yes"

result = _IIf(a$ = "YES", "a$ is YES", "a$ is not YES" )

Print result

I say think because I haven't downloaded and installed the new version yet.

Someone please correct Steve if I am wrong. Big Grin

Pete

RE: _IIF limits two questions - doppler - 12-21-2024

(12-20-2024, 09:07 PM)bplus Wrote:
(12-20-2024, 07:06 PM)doppler Wrote: 2. Can this statement be on one line: p=_iff(p=instr(thing$,"\"): p <= 10, p, p=0)
re: position of "\" must be less than 11 else make it zero

How about:
p=_iff(instr(thing$,"\") <= 10, instr(thing$,"\"), 0)

Yes that is the basis of the line. My real question, can I mini sub-code the first parameter of the IFF (test comparison). I thought I could be fancy on the first statement. Since the IFF statements are separated by comma's. Only the last minicoding result is the real test. ie: (p<=10). I only happened to use instr as a question example. The minicoding could be almost anything and referencing other variables to manipulate. Hell for all intended purposes the first statement could be a sub-function call out. ie:

dim share x, p

p=_iff(test,p,p=0)

sub test
x=instr(thing$,"\")
if x<=10 the p=x
end sub

The whole idea of a sub maybe washed up

RE: _IIF limits two questions - bplus - 12-21-2024

Smile

How about:
p = instr(thing$,"\")
p = _iff(p<11, p, 0)

_IFF is just a very brief assignment statement made from a decision.

RE: _IIF limits two questions - madscijr - 12-22-2024

(12-21-2024, 12:02 AM)Pete Wrote: Petr's example as a string I think would be...

Code: (Select All)
Dim result as String

a$ = "Yes"

result = _IIf(a$ = "YES", "a$ is YES", "a$ is not YES" )

Print result
I say think because I haven't downloaded and installed the new version yet.

Someone please correct Steve if I am wrong.

Pete

I haven't used the new _IIF command yet, but in VBA (and VB6 if I recall?) you could use IIF to return multiple types.

In QB64 / QB64PE, I had to make seperate functions for different return types, like below, but it would be nice if the built-in _IIF command just worked with whatever type you passed in for parameters 2 & 3 (as long as parameters 2 & 3 aren't 2 different types)...

Code: (Select All)
'Integer

Function IIF% (Condition, IfTrue%, IfFalse%)

    If Condition Then IIF% = IfTrue% Else IIF% = IfFalse%

End Function

'String

Function IIFS$ (Condition, IfTrue$, IfFalse$)

    If Condition Then IIFS$ = IfTrue$ Else IIFS$ = IfFalse$

End Function

'Long

Function IIFL& (Condition, IfTrue&, IfFalse&)

    If Condition Then IIFL& = IfTrue& Else IIFL& = IfFalse&

End Function

'Single

Function IIFSng! (Condition, IfTrue!, IfFalse!)

    If Condition Then IIFSng! = IfTrue! Else IIFSng! = IfFalse!

End Function

'Double

Function IIFDbl# (Condition, IfTrue#, IfFalse#)

    If Condition Then IIFDbl# = IfTrue# Else IIFDbl# = IfFalse#

End Function

'Float

Function IIFF## (Condition, IfTrue##, IfFalse##)

    If Condition Then IIFF## = IfTrue## Else IIFF## = IfFalse##

End Function

'Unsigned Integer

Function IIFUI~% (Condition, IfTrue~%, IfFalse~%)

    If Condition Then IIFUI~% = IfTrue~% Else IIFSTR$ = IfFalse~%

End Function

'Etc.

RE: _IIF limits two questions - a740g - 12-23-2024

Quote:but it would be nice if the built-in _IIF command just worked with whatever type you passed in for parameters 2 & 3 (as long as parameters 2 & 3 aren't 2 different types)...

It does.

RE: _IIF limits two questions - madscijr - 12-23-2024

(12-23-2024, 01:15 AM)a740g Wrote:
Quote:but it would be nice if the built-in _IIF command just worked with whatever type you passed in for parameters 2 & 3 (as long as parameters 2 & 3 aren't 2 different types)...
It does.

That's a really cool improvement, thanks guys!

Along those lines, I don't suppose it would be possible (or universally appreciated) to support operator overloading in functions? ie you can define a function x that receives certain parameter types, and define one or more additional functions also called x but receiving different parameters, where the compiler will know which definition to use based on the parameter types sent? In other words, it would allow someone to define a function that works with different parameter types like _iif does.