• Walter Bright (4/4) Jul 23 2007 extern (System)
• Stewart Gordon (4/8) Jul 26 2007 What is the practical use of extern (System)?
• Frits van Bommel (14/24) Jul 26 2007 Some libraries have the same interface (functions) on different
• Sean Kelly (3/9) Jul 26 2007 The ODBC API is one such.

Walter Bright <newshound1 digitalmars.com> writes:

   extern (System)

should work now.

http://www.digitalmars.com/d/1.0/changelog.html
http://ftp.digitalmars.com/dmd.1.020.zip

"Stewart Gordon" <smjg_1998 yahoo.com> writes:

"Walter Bright" <newshound1 digitalmars.com> wrote in message 
news:f83il1$1b57$1 digitalmars.com...
   extern (System)

 should work now.

 http://www.digitalmars.com/d/1.0/changelog.html
 http://ftp.digitalmars.com/dmd.1.020.zip

What is the practical use of extern (System)?

Stewart. 

Frits van Bommel <fvbommel REMwOVExCAPSs.nl> writes:

Stewart Gordon wrote:
 "Walter Bright" <newshound1 digitalmars.com> wrote in message 
 news:f83il1$1b57$1 digitalmars.com...
   extern (System)

 should work now.

 http://www.digitalmars.com/d/1.0/changelog.html
 http://ftp.digitalmars.com/dmd.1.020.zip

 
 What is the practical use of extern (System)?

Some libraries have the same interface (functions) on different 
operating systems, but with a different calling convention. (Typically 
extern(Windows) on Windows and extern(C) elsewhere)
This used to be handled by putting
---
version(Windows) {
     extern(Windows):
} else {
     extern(C):
}
---
at the top of the interface module but apparently the fact that that 
worked was due to a bug, and it was fixed...

Sean Kelly <sean f4.ca> writes:

Frits van Bommel wrote:
 Stewart Gordon wrote:
 What is the practical use of extern (System)?

 
 Some libraries have the same interface (functions) on different 
 operating systems, but with a different calling convention.

The ODBC API is one such.


Sean