PureBasic and GOSUB

[Charles Pegge]

With an inner gosub, there is always a risk of inadvertently falling into the body of the subroutine, but apart from that, the integrity of the stack would not be too hard to maintain.

[Patrice Terrier]

Really i couldn't figure how, for a SDK programmer, PowerBASIC could be easier to translate to PureBasic rather than  C++, i would like to understand that, because i have not attirance for sadomaso. 

[Jim Dunn]

... The last two versions of (PowerBASIC) saw significant bloat added ...

I'm not sure "significant" is the right word here; what's a few bytes/kilobytes/megabytes in this day/age.

[Theo Gottwald]

Patrice, its C that looks so far from Basic to me. But this is personal taste.
PureBasic also has the advantage that you can write a mail to the lead programmer (Fred) and he WILL give you an answer that helps. I like his behavior.

[Brice Manuel]

I'm not sure "significant" is the right word here; what's a few bytes/kilobytes/megabytes in this day/age.

"Bloat because you can" is a lazy and shoddy programming methodology.

[Patrice Terrier]

its C that looks so far from Basic to me

Not, when you are using the SDK coding style, they are exactly the same!

[Theo Gottwald]

Structurally, not exactly, Patrice 

[Patrice Terrier]

Structurally, a basic "Hello world" window, with a winproc callback and a message pump are exactly the same really.   

[Theo Gottwald]

Structurally, a basic "Hello world" window, with a winproc callback and a message pump are exactly the same really.   

Yes, but later it looks like this:

Code Select Expand

; ListView.GetSubItemRect((INT) pHeader->nmcd.dwItemSpec, pHeader->iSubItem, LVIR_BOUNDS, &Position);


and ... does it have a GOSUB?

[Charles Pegge]

GCC supports nested functions, with access to parent variables, a perfect substitute for gosub:

Code Select Expand


  #include <stdio.h>

  int main()
  {
    int a;
    void mygosub()
    {
     a=42;
    }
    mygosub();
    printf("%i",a); // 42
  }


[James C. Fuller]

Charles,
  Not my gcc

C:\CodeBlocks\Projects\nestes02\main.c|8|warning: ISO C forbids nested functions [-Wpedantic]|

James

[Charles Pegge]

Hi James,
My rig is a console-and-notepad job:
I compile direct with no switches : gcc gosub.c
It compiles to a.exe which is convenient for testing

[Theo Gottwald]

Does it really compile to just 1 Mnemonic for CALL and one Mnemonic for RET?

[James C. Fuller]

Hi James,
My rig is a console-and-notepad job:
I compile direct with no switches : gcc gosub.c
It compiles to a.exe which is convenient for testing

Charles,
  I did a quick compile with code::blocks where I had the iso standard flag set hence the warning
It is a  gcc feature.

James