Re: Keyword 'Global' is not really useful ... use Shared
Posted: Sat Sep 09, 2006 3:07 pm
Yeah man... don't hassle the hoff...PB wrote:Do you really want all that hassle?
- np
- np
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Keyword 'Global' is not really useful ... use Shared
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- np
Re: Keyword 'Global' is not really useful ... use Shared
Posted: Tue Sep 12, 2006 2:43 am
Isn't another name for a variable that never changes a "Constant"?PB wrote:> If you use Global very often (You like it?) it seems to be a bad design of your code
No it's not. I use it for variables that NEVER change, such as appname$ that
holds the name of the running exe.
Russell
Re: Keyword 'Global' is not really useful ... use Shared
Posted: Tue Sep 12, 2006 10:12 pm
@Amiga5k not really.Amiga5k wrote:Isn't another name for a variable that never changes a "Constant"?PB wrote:> If you use Global very often (You like it?) it seems to be a bad design of your code
No it's not. I use it for variables that NEVER change, such as appname$ that
holds the name of the running exe.
Russell
A Constant can't be defined by a variabel, whereas a global can be, and at runtime and stille never change after that, if you like.
best Henrik
Re: Keyword 'Global' is not really useful ... use Shared
Posted: Tue Sep 12, 2006 10:21 pm
> Isn't another name for a variable that never changes a "Constant"?
Yes, but only when the variable's value is already known. Observe:
Yes, but only when the variable's value is already known. Observe:
Code: Select all
#appname=ProgramFilename()Posted: Wed Sep 13, 2006 4:58 pm
Well, there you changed it (it was null when the program started, now it's "PureBasic1.exe" or something).
Posted: Wed Sep 13, 2006 10:24 pm
> you changed it
Technically: yes, of course a variable will change once you give it an inital value.
Technically: yes, of course a variable will change once you give it an inital value.
Posted: Thu Sep 14, 2006 3:02 am
And you did say that you would "Never" change it... Just messing with ya here, but there is a subtle difference. It could, however, be useful to allow Constants to be defined initially with a variable - under certain rules of course (such as the example given). But I suppose in that situation you would just use a Global.
Russell
Just messing with ya here, but there is a subtle difference. It could, however, be useful to allow Constants to be defined initially with a variable - under certain rules of course (such as the example given). But I suppose in that situation you would just use a Global. Russell
Posted: Thu Sep 14, 2006 6:21 am
I'm not sure I see how a constant can be assigned a variable value.
Maybe special constants could be created such as #PB_ProgramFileName, but they would not be real constants. PureBasic would have to do some hidden initial code to assign the value to the Psuedo-Constant. And in such a case there would be no real gain for the programmer or the program over using the Global approach as PB outlined.
Maybe special constants could be created such as #PB_ProgramFileName, but they would not be real constants. PureBasic would have to do some hidden initial code to assign the value to the Psuedo-Constant. And in such a case there would be no real gain for the programmer or the program over using the Global approach as PB outlined.