[Gambas-user] VB to Gambas conversion question

[wally]

Thank you very much.

so if i use 
VB:		ReDim t#(0 To 25)
GB:	Dim t[25] as Float

VB: If (i < 10) Then t(I) = 0#
GB: If(i < 10) then t[i] = 0.0

all will be nice, correct ?



On Saturday 28 July 2012 15:10:17 nando wrote:
> Not a cast
> It is Forced Double at compile time.
> 
> 0 is usually interpreted when compiled as 0 (integer)
> 0.0 would be interpreted as non-integer
> 0# same thing but forces the representation as double.
> 
> Reason behind doing this:
> 
> if you have a double array t#(0..25)
> 
> when you do
> 
> t#(I) = 0
> 
> The zero compiles to an integer.
> at RUNTIME, it has to convert to double....which takes more cpu cycles.
> 
> So, 0# forces the compile to a double..at compile time.
> at RUNTIME, no convesion....less cpu cycles.
> 
> It would make a difference with many converstions over a long time
> or if the program was very intense doing this type of stuff.
> 
> Smarter compilers would realize the immediate value is being assigned to
> a double and coerce the immediate to double at compile time.
> 
> 
> ---------- Original Message -----------
> From: wally <wally at ...2037...>
> To: mailing list for gambas users <gambas-user at lists.sourceforge.net>
> Sent: Sat, 28 Jul 2012 15:36:31 +0200
> Subject: [Gambas-user] VB to Gambas conversion question
> 
> > what does "0#" mean in VB ?
> > 
> > e.g.
> > 
> > ReDim t#(0 To 25)
> > 
> > If (i < 10) Then t(I) = 0#
> > 
> > is this some kind of casting zero to Double ?
> > 
> > thanks in advance
> > wally
> > 
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