7 More Discussions You Might Find Interesting
1. Programming
Hello All,
I am a learner in C++. I was testing my inheritance knowledge with following piece of code.
#include <iostream>
using namespace std;
class base
{
public :
void display()
{
cout << "In base display()" << endl;
}
void display(int k)
{... (2 Replies)
Discussion started by: anand.shah
2 Replies
2. Programming
I have the two class definition as follows.
class A { public: int a; };
class B : virtual public A{ };
The size of class A is shown as 4, and size of class B is shown as 16. Why is this effect ?. (2 Replies)
Discussion started by: techmonk
2 Replies
3. UNIX for Advanced & Expert Users
Hi all!
I am trying to register a device in an existing device class, but I am
having trouble getting the pointer to an existing class.
I can create a class in a module, get the pointer to it and then use
it to register the device with:
*cl = class_create(THIS_MODULE, className);... (0 Replies)
Discussion started by: hdaniel@ualg.pt
0 Replies
4. Programming
Hi,
I believe the next code is wrong:
class Egg {
Egg e;
int i;
Egg(int ii=0) : i(ii) {}
};
because you would end up with an endless definition (memory allocation) of Egg objects, thus int i.
Ok, so God Eckel proposes for a singleton:
class Egg {
static Egg e;
int... (5 Replies)
Discussion started by: xavipoes
5 Replies
5. Programming
Hi, i have a question about C++. Is it possible to declare a class with a member ot the same class? For example, a linked list or i want to convert this C code to C++ class (Elemento)
typedef struct elemento
{
char name;
char value;
List<struct elemento> ltElementos;
... (7 Replies)
Discussion started by: pogdorica
7 Replies
6. UNIX for Dummies Questions & Answers
im just trying to have some fun and kill some time writing a c++ program that has a person type in a car make and model then gives them a year and a price. or something like that. i always have problems getting it goin but once the ball is rolling im usually pretty good. anyone wanna help me out? ... (1 Reply)
Discussion started by: rickym2626
1 Replies
7. Shell Programming and Scripting
hi anbu23 u have just replied to my post i want to ask u something else can we get into contact thanks
or reply itself
mv -f $XXTEST_TOP/install/SPE1/XXTEST_SPE1_XX_QUOTE_DETAILS_TBL.sql $XXTEST_TOP/admin2/sql
if
then
echo "Move is successful"
fi
1. What u mean by $? here can u be... (1 Reply)
Discussion started by: Lutchumaya
1 Replies
Class::WhiteHole(3) User Contributed Perl Documentation Class::WhiteHole(3)
NAME
Class::WhiteHole - base class to treat unhandled method calls as errors
SYNOPSIS
package Bar;
# DBI inherits from DynaLoader which inherits from AutoLoader
# Bar wants to avoid this accidental inheritance of AutoLoader.
use base qw(Class::WhiteHole DBI);
DESCRIPTION
Its possible to accidentally inherit an AUTOLOAD method. Often this will happen if a class somewhere in the chain uses AutoLoader or
defines one of their own. This can lead to confusing error messages when method lookups fail.
Sometimes you want to avoid this accidental inheritance. In that case, inherit from Class::WhiteHole. All unhandled methods will produce
normal Perl error messages.
BUGS & CAVEATS
Be sure to have Class::WhiteHole before the class from which you're inheriting AUTOLOAD in the ISA. Usually you'll want Class::WhiteHole
to come first.
If your class inherits autoloaded routines this class may cause them to stop working. Choose wisely before using.
White holes are only a hypothesis and may not really exist.
COPYRIGHT
Copyright 2000 Michael G Schwern <schwern@pobox.com> all rights reserved. This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.
AUTHOR
Michael G Schwern <schwern@pobox.com>
SEE ALSO
Class::BlackHole
perl v5.12.1 2003-05-28 Class::WhiteHole(3)