[Gambas-user] VB to Gambas conversion question

[nando]

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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