Roku Developer Program

[matrixebiz]

So with 'Sub' I can declare a value to Something without having to return that value back out of the routine like I would have to do with a 'Function'? or are you meaning something different?

Something = Door
Somthing = Sub()  or  Somthing = Function()


Sub()
Change Something to = "Window"
End Sub

Function()
Change Something to = "Window"
return window
End Function

[squirreltown]

"matrixebiz" wrote:
So with 'Sub' I can declare a value to Something without having to return that value back out of the routine like I would have to do with a 'Function'? or are you meaning something different?

You are not required to return something from a function.

[matrixebiz]

Okay, thank you

[Komag]

sometimes I want to conditionally cancel a function with an empty RETURN, and if I plan to do that, I just have to add the AS VOID to the FUNCTION at the top or else I'll get a Return error. 
Ex:

FUNCTION mapScrollOne(dir) AS VOID
 map    = m.drAA.map
 IF NOT m.mAA.flL[map.mapFl][ 1] THEN RETURN
 IF map.mInvert THEN dir = oppFace(dir)
 moveY  = 0
 moveX  = 0
 mSYp   = map.mapScrollY
 mSXp   = map.mapScrollX
 d      = m.sy.sett.scrollSz
 IF       dir = 0: moveY = - d: mSYp = mSYp - d
   ELSEIF dir = 1: moveX =   d: mSXp = mSXp + d
   ELSEIF dir = 2: moveY =   d: mSYp = mSYp + d
   ELSEIF dir = 3: moveX = - d: mSXp = mSXp - d
 END IF
 IF checkMapRoom(dir, mSYp, mSXp)
   map.mapScrollY = mSYp
   map.mapScrollX = mSXp
   offsetMap(moveY, moveX)
   playSound("menuForw", 0, 0, 0, FALSE, 1, 1)
 END IF
END FUNCTION

[squirreltown]

"Komag" wrote:
sometimes I want to conditionally cancel a function with an empty RETURN, and if I plan to do that, I just have to add the AS VOID to the FUNCTION at the top or else I'll get a Return error. 

Or you could return 0

[marcelo_cabral]

"Komag" wrote:
sometimes I want to conditionally cancel a function with an empty RETURN, and if I plan to do that, I just have to add the AS VOID to the FUNCTION at the top or else I'll get a Return error. 

You can also use Return from a Sub the same way.

[Komag]

"squirreltown" wrote:

"Komag" wrote:
sometimes I want to conditionally cancel a function with an empty RETURN, and if I plan to do that, I just have to add the AS VOID to the FUNCTION at the top or else I'll get a Return error. 

Or you could return 0

Functions are Integers by default? If I have to declare AS INTEGER then it's easier to type AS VOID and save myself the trouble later on of typing that 0. But if you can do 0 by default without the AS VOID that's nice to know.

[EnTerr]

"Komag" wrote:
Functions are Integers by default?

Functions and variables in B/S are "as Dynamic", unless otherwise explicitly declared. That means you can return ANY of The Types.

[Komag]

Ah yes, if I would have applied my noggin a little harder I might have realized/remembered that! At least, I knew it regarding variables.