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digitalmars.D.learn - base class function hiding

reply bc <mi_emayl_adrez hotmail.com> writes:
It's so annoying. I'm always running into difficulties with this. The  
times a function has been hidden when I didn't want it hidden outnumber  
the reverse case 20 to 1 or more. Especially with templates and mixins.  
I'm sure someone will say it it's better this way but I don't buy it. I  
really would prefer functions to never be hidden unless specifically  
requested. What can be done about this?
Oct 11 2007
parent reply Regan Heath <regan netmail.co.nz> writes:
bc wrote:

 It's so annoying. I'm always running into difficulties with this. The 
 times a function has been hidden when I didn't want it hidden outnumber 
 the reverse case 20 to 1 or more. Especially with templates and mixins. 
 I'm sure someone will say it it's better this way but I don't buy it. I 
 really would prefer functions to never be hidden unless specifically 
 requested. What can be done about this?


The problem is larger than personal preference, have a search through 
these groups and the archives on digitalmars.com/d.
Oct 11 2007
parent reply bc <mi_emayl_adrez hotmail.com> writes:
On Thu, 11 Oct 2007 18:51:25 +0100, Regan Heath <regan netmail.co.nz>  
wrote:


 bc wrote:

 It's so annoying. I'm always running into difficulties with this. The  
 times a function has been hidden when I didn't want it hidden outnumber  
 the reverse case 20 to 1 or more. Especially with templates and mixins.  
 I'm sure someone will say it it's better this way but I don't buy it. I  
 really would prefer functions to never be hidden unless specifically  
 requested. What can be done about this?


 The problem is larger than personal preference, have a search through  
 these groups and the archives on digitalmars.com/d.


Thanks for the pointer. Sorry if I was rude BTW. I'd been messing around
trying to make a rectangular array class in C++, that must have an
opIndex with variable number of arguments up to the number of dimensions,
got p***ed off with that, thought 'i bet this is easier in D' and found
that it wasn't.
Oct 11 2007
next sibling parent Bill Baxter <dnewsgroup billbaxter.com> writes:
bc wrote:

 On Thu, 11 Oct 2007 18:51:25 +0100, Regan Heath <regan netmail.co.nz> 
 wrote:
 

 bc wrote:

 It's so annoying. I'm always running into difficulties with this. The 
 times a function has been hidden when I didn't want it hidden 
 outnumber the reverse case 20 to 1 or more. Especially with templates 
 and mixins. I'm sure someone will say it it's better this way but I 
 don't buy it. I really would prefer functions to never be hidden 
 unless specifically requested. What can be done about this?


 The problem is larger than personal preference, have a search through 
 these groups and the archives on digitalmars.com/d.


 Thanks for the pointer. Sorry if I was rude BTW. I'd been messing around
 trying to make a rectangular array class in C++, that must have an
 opIndex with variable number of arguments up to the number of dimensions,
 got p***ed off with that, thought 'i bet this is easier in D' and found
 that it wasn't.


With a string mixin and CTFE you should be able to generate the required 
functions on the fly.

Take a look at the code here (first one on the page should do it):
http://www.dsource.org/forums/viewtopic.php?t=3170&postdays=0&postorder=asc&start=0

It'll take some wading through, but if you're patient you should be able 
to figure out how to turn that into code that generates N different 
opIndex functions.


--bb
Oct 11 2007
prev sibling next sibling parent Regan Heath <regan netmail.co.nz> writes:
bc wrote:

 On Thu, 11 Oct 2007 18:51:25 +0100, Regan Heath <regan netmail.co.nz> 
 wrote:
 

 bc wrote:

 It's so annoying. I'm always running into difficulties with this. The 
 times a function has been hidden when I didn't want it hidden 
 outnumber the reverse case 20 to 1 or more. Especially with templates 
 and mixins. I'm sure someone will say it it's better this way but I 
 don't buy it. I really would prefer functions to never be hidden 
 unless specifically requested. What can be done about this?


 The problem is larger than personal preference, have a search through 
 these groups and the archives on digitalmars.com/d.


 Thanks for the pointer. Sorry if I was rude BTW. 


It wasn't that, it's just that this topic comes up every now and again 
and it also happens to be a hard one to explain so it's better to re-use 
the old conversations if possible.


 I'd been messing around
 trying to make a rectangular array class in C++, that must have an
 opIndex with variable number of arguments up to the number of dimensions,
 got p***ed off with that, thought 'i bet this is easier in D' and found
 that it wasn't.


Looks like Bill is sorting you out :)

Regan
Oct 12 2007
prev sibling parent reply Manfred Nowak <svv1999 hotmail.com> writes:
bc wrote


 must have an opIndex with variable number of arguments up to the
 number of dimensions


What's wrong with
  void opIndex(size_t[] arg ...)

-manfred
Oct 13 2007
parent reply Bill Baxter <dnewsgroup billbaxter.com> writes:
Manfred Nowak wrote:

 bc wrote
 

 must have an opIndex with variable number of arguments up to the
 number of dimensions


 
 What's wrong with
   void opIndex(size_t[] arg ...)
 
 -manfred  
 


*) No compile-time check on exceeding the valid number of arguments.
*) the return type shouldn't be "void" but an N-nargs (N minus 
args.length) dimensional array.  Since N is a template parameter, each 
function must return a different type.

--bb
Oct 13 2007
parent Manfred Nowak <svv1999 hotmail.com> writes:
Bill Baxter wrote


 *) No compile-time check on exceeding the valid number of
 arguments. *) the return type shouldn't be "void" but an N-nargs
 (N minus args.length) dimensional array.  Since N is a template
 parameter, each function must return a different type.


thx
-manfred
Oct 14 2007