c++.stlsoft - scoped_handle but for functions?

Cl�udio Albuquerque (9/9) Feb 07 2007 Hi Mathew,

Matthew Wilson (4/13) Feb 07 2007 Not sure what you mean. Can you give me an illustration of what you mean...

Cl�udio Albuquerque (15/38) Feb 07 2007 Sure,

Matthew Wilson (17/59) Feb 07 2007 I see.

Matthew Wilson (8/8) Feb 07 2007 I mean:

Cl�udio Albuquerque (6/15) Feb 07 2007 Humm I see

Matthew Wilson (3/21) Feb 07 2007 You're welcome. ;-)

Cl�udio Albuquerque (18/47) Mar 08 2007 Hi Mathew,
Cl�udio Albuquerque (18/46) Mar 09 2007 Hi Mathew,

Matthew Wilson (8/59) Mar 09 2007 Ah, the problem there is that it's not designed to do that for member

Cl�udio Albuquerque (19/93) Mar 12 2007 Mathew,

"Cl�udio Albuquerque" <0318222801 netcabo.pt> writes:

Hi Mathew,



I've been browsing the STLSoft documentation looking for something like 
scoped_handle but that applies the same principle but to two functions. 
Unfortunately did not find it, and instead of rushing into the 
implementation, a chosen a wiser path and decided that asking you would 
hurt. So STLSoft already has something like applying the RAII idea but to 
functions?



Thanks

Cl�udio Albuquerque

Feb 07 2007

"Matthew Wilson" <matthew hat.stlsoft.dot.org> writes:

Not sure what you mean. Can you give me an illustration of what you mean?

Matthew


"Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
news:eqc6nd$2815$1 digitaldaemon.com...
 Hi Mathew,



 I've been browsing the STLSoft documentation looking for something like
 scoped_handle but that applies the same principle but to two functions.
 Unfortunately did not find it, and instead of rushing into the
 implementation, a chosen a wiser path and decided that asking you would
 hurt. So STLSoft already has something like applying the RAII idea but to
 functions?



 Thanks

 Cl�udio Albuquerque

Feb 07 2007

"Cl�udio Albuquerque" <0318222801 netcabo.pt> writes:

Sure,

void MyFunc()
{
 ...
    scoped_functions<InitializeFunc,FinalizeFunc> OpInitializeFinalize;
...
}

When I declare the scoped_functions object, it will call the 
InitializeFunc() function, when the object goes out of scope it will call 
the FinalizeFun().

Hope this explanation helps.

Regards
Cl�udio Albuquerque


"Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message 
news:eqcc8u$2fni$1 digitaldaemon.com...
 Not sure what you mean. Can you give me an illustration of what you mean?

 Matthew


 "Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
 news:eqc6nd$2815$1 digitaldaemon.com...
 Hi Mathew,



 I've been browsing the STLSoft documentation looking for something like
 scoped_handle but that applies the same principle but to two functions.
 Unfortunately did not find it, and instead of rushing into the
 implementation, a chosen a wiser path and decided that asking you would
 hurt. So STLSoft already has something like applying the RAII idea but to
 functions?



 Thanks

 Cl�udio Albuquerque

Feb 07 2007

"Matthew Wilson" <matthew hat.stlsoft.dot.org> writes:

I see.

No, scoped_handle does not support that syntax. However, it does support
that functionality, as in:

void MyFunc()
{
    ...
    InitializeFunc();
    scoped_functions<void> OpInitializeFinalize(FinalizeFunc);
    ...
}

:-)

Cheers

Matthew


"Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
news:eqd624$in5$1 digitaldaemon.com...
 Sure,

 void MyFunc()
 {
  ...
     scoped_functions<InitializeFunc,FinalizeFunc> OpInitializeFinalize;
 ...
 }

 When I declare the scoped_functions object, it will call the
 InitializeFunc() function, when the object goes out of scope it will call
 the FinalizeFun().

 Hope this explanation helps.

 Regards
 Cl�udio Albuquerque


 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqcc8u$2fni$1 digitaldaemon.com...
 Not sure what you mean. Can you give me an illustration of what you


mean?
 Matthew


 "Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
 news:eqc6nd$2815$1 digitaldaemon.com...
 Hi Mathew,



 I've been browsing the STLSoft documentation looking for something like
 scoped_handle but that applies the same principle but to two functions.
 Unfortunately did not find it, and instead of rushing into the
 implementation, a chosen a wiser path and decided that asking you would
 hurt. So STLSoft already has something like applying the RAII idea but



to
 functions?



 Thanks

 Cl�udio Albuquerque

Feb 07 2007

"Matthew Wilson" <matthew hat.stlsoft.dot.org> writes:

I mean:

void MyFunc()
{
    ...
    InitializeFunc();
    scoped_handle<void> OpInitializeFinalize(FinalizeFunc);
    ...
}

Feb 07 2007

"Cl�udio Albuquerque" <0318222801 netcabo.pt> writes:

Humm I see

Ok, although I would like the "other" syntax better, I can see also some 
advantages to this.

Thanks Mathew!


"Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message 
news:eqd9t0$nv0$1 digitaldaemon.com...
 I mean:

 void MyFunc()
 {
    ...
    InitializeFunc();
    scoped_handle<void> OpInitializeFinalize(FinalizeFunc);
    ...
 }

Feb 07 2007

"Matthew Wilson" <matthew hat.stlsoft.dot.org> writes:

"Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
news:eqdc5a$r9r$1 digitaldaemon.com...
 Humm I see

 Ok, although I would like the "other" syntax better, I can see also some
 advantages to this.

 Thanks Mathew!

You're welcome. ;-)

 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqd9t0$nv0$1 digitaldaemon.com...
 I mean:

 void MyFunc()
 {
    ...
    InitializeFunc();
    scoped_handle<void> OpInitializeFinalize(FinalizeFunc);
    ...
 }

Feb 07 2007

"Cl�udio Albuquerque" <0318222801 netcabo.pt> writes:

Hi Mathew,

I'm trying to use the implementation that you recomended 
[scoped_handle<void> OpInitializeFinalize(FinalizeFunc);], but with member 
functions and I got a couple of errors. Could you help is it possible for 
you to help me on this? [I am using beta-44.]

Thanks In Advance
Cl�udio Albuquerque

stlsoft::scoped_handle<void> scopedEndOperation ( 
&baseClass::EndOperation );

Error 4 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void 
(__cdecl *)(void))' : cannot convert parameter 1 from 'bool (__thiscall 
teste::* )(void)' to 'void (__cdecl *)(void)'

scoped_handle<void> scopedFinalize( baseClass::OpFinalize() );

Error 5 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void 
(__cdecl *)(void))' : cannot convert parameter 1 from 'bool' to 'void 
(__cdecl *)(void)'



"Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message 
news:eqdfu3$10ap$1 digitaldaemon.com...
 "Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
 news:eqdc5a$r9r$1 digitaldaemon.com...
 Humm I see

 Ok, although I would like the "other" syntax better, I can see also some
 advantages to this.

 Thanks Mathew!

 You're welcome. ;-)

 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqd9t0$nv0$1 digitaldaemon.com...
 I mean:

 void MyFunc()
 {
    ...
    InitializeFunc();
    scoped_handle<void> OpInitializeFinalize(FinalizeFunc);
    ...
 }

Mar 08 2007

"Cl�udio Albuquerque" <0318222801 netcabo.pt> writes:

Hi Mathew,

I'm trying to use the implementation that you recomended
[scoped_handle<void> OpInitializeFinalize(FinalizeFunc);], but with member
functions and I got a couple of errors. Could you help is it possible for
you to help me on this? [I am using beta-44.]

Thanks In Advance
Cl�udio Albuquerque

stlsoft::scoped_handle<void> scopedEndOperation (
&baseClass::EndOperation );

Error 4 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void
(__cdecl *)(void))' : cannot convert parameter 1 from 'bool (__thiscall
teste::* )(void)' to 'void (__cdecl *)(void)'

scoped_handle<void> scopedFinalize( baseClass::OpFinalize() );

Error 5 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void
(__cdecl *)(void))' : cannot convert parameter 1 from 'bool' to 'void
(__cdecl *)(void)'



"Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
news:eqdfu3$10ap$1 digitaldaemon.com...
 "Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
 news:eqdc5a$r9r$1 digitaldaemon.com...
 Humm I see

 Ok, although I would like the "other" syntax better, I can see also some
 advantages to this.

 Thanks Mathew!

 You're welcome. ;-)

 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqd9t0$nv0$1 digitaldaemon.com...
 I mean:

 void MyFunc()
 {
    ...
    InitializeFunc();
    scoped_handle<void> OpInitializeFinalize(FinalizeFunc);
    ...
 }

Mar 09 2007

"Matthew Wilson" <matthew hat.stlsoft.dot.org> writes:

Ah, the problem there is that it's not designed to do that for member
functions.

I wouldn't want to alter scoped_handle to do that, but I would be open to
implementing an RAII class template - e.g. scoped_method - to do that.

Anyone got any ideas on this one, to give me a kick start?


"Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
news:esraio$12d3$2 digitalmars.com...
 Hi Mathew,

 I'm trying to use the implementation that you recomended
 [scoped_handle<void> OpInitializeFinalize(FinalizeFunc);], but with member
 functions and I got a couple of errors. Could you help is it possible for
 you to help me on this? [I am using beta-44.]

 Thanks In Advance
 Cl�udio Albuquerque

 stlsoft::scoped_handle<void> scopedEndOperation (
 &baseClass::EndOperation );

 Error 4 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void
 (__cdecl *)(void))' : cannot convert parameter 1 from 'bool (__thiscall
 teste::* )(void)' to 'void (__cdecl *)(void)'

 scoped_handle<void> scopedFinalize( baseClass::OpFinalize() );

 Error 5 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void
 (__cdecl *)(void))' : cannot convert parameter 1 from 'bool' to 'void
 (__cdecl *)(void)'



 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqdfu3$10ap$1 digitaldaemon.com...
 "Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
 news:eqdc5a$r9r$1 digitaldaemon.com...
 Humm I see

 Ok, although I would like the "other" syntax better, I can see also



some
 advantages to this.

 Thanks Mathew!

 You're welcome. ;-)

 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqd9t0$nv0$1 digitaldaemon.com...
 I mean:

 void MyFunc()
 {
    ...
    InitializeFunc();
    scoped_handle<void> OpInitializeFinalize(FinalizeFunc);
    ...
 }

Mar 09 2007

"Cl�udio Albuquerque" <0318222801 netcabo.pt> writes:

Mathew,



Since I'm the only one interested here it goes:

My suggestion goes for a different name (for example: scoped_function :-) ). 
The name suggestion is just because then I would like something that acts 
like scope_handle<void> but also support's the this calling convention. 
Getting the this pointer into the RAII class as well as supporting a other 
type of functions is something I would consider you a better person to solve 
and I. :-)
The problem here is that there would be an overlap of functionality, 
although in the case of this new functionality appeared in stlsoft then I 
would only use scope_handle when there is some sort of recourse that I want 
to manage.

I only suggest a more general approach, because I would prefer then just one 
way of calling a function upon a closure of scope. I would think that the 
Thief constructor would also be helpful; at least I'm using it.



Kind Regards

Cl�udio Albuquerque








"Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message 
news:essph4$sji$1 digitalmars.com...
 Ah, the problem there is that it's not designed to do that for member
 functions.

 I wouldn't want to alter scoped_handle to do that, but I would be open to
 implementing an RAII class template - e.g. scoped_method - to do that.

 Anyone got any ideas on this one, to give me a kick start?


 "Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
 news:esraio$12d3$2 digitalmars.com...
 Hi Mathew,

 I'm trying to use the implementation that you recomended
 [scoped_handle<void> OpInitializeFinalize(FinalizeFunc);], but with 
 member
 functions and I got a couple of errors. Could you help is it possible for
 you to help me on this? [I am using beta-44.]

 Thanks In Advance
 Cl�udio Albuquerque

 stlsoft::scoped_handle<void> scopedEndOperation (
 &baseClass::EndOperation );

 Error 4 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void
 (__cdecl *)(void))' : cannot convert parameter 1 from 'bool (__thiscall
 teste::* )(void)' to 'void (__cdecl *)(void)'

 scoped_handle<void> scopedFinalize( baseClass::OpFinalize() );

 Error 5 error C2664: 'stlsoft::scoped_handle<void>::scoped_handle(void
 (__cdecl *)(void))' : cannot convert parameter 1 from 'bool' to 'void
 (__cdecl *)(void)'



 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqdfu3$10ap$1 digitaldaemon.com...
 "Cl�udio Albuquerque" <0318222801 netcabo.pt> wrote in message
 news:eqdc5a$r9r$1 digitaldaemon.com...
 Humm I see

 Ok, although I would like the "other" syntax better, I can see also



 some
 advantages to this.

 Thanks Mathew!

 You're welcome. ;-)

 "Matthew Wilson" <matthew hat.stlsoft.dot.org> wrote in message
 news:eqd9t0$nv0$1 digitaldaemon.com...
 I mean:

 void MyFunc()
 {
    ...
    InitializeFunc();
    scoped_handle<void> OpInitializeFinalize(FinalizeFunc);
    ...
 }

Mar 12 2007

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c++.stlsoft - scoped_handle but for functions?