, and when I run it, I get the following message error:
I know the problem is that function should have been called with an object from Param, but I was expecting that the constructor Param(int , int) would do the job.
What is wrong with my assumption, and how could I fix this problem?
thank you in advance!!
santiagorf
This is known as implicit conversion and for constructors it works if it has a single argument only.
If you have multiple arguments and want to make use of the implicit conversion, then you need a constructor having default values.
Hi guys I am new to these forums but since I am taking a class at college I would appreciate any help that is possible for this program. My instructor said that when its complete the program should be able to store all 3 fields instead of just 1.
public class Greeter2Test
{
public static... (4 Replies)
helo i read many books but i cant find the proper answer that why
constructor cannot be virtual
can u explain me in simple term that why constructor cannot be virtual
Regards,
Amit (2 Replies)
helo i m new in c++ on linux
can u tell me with an simple example that how do you handle constructor and destructor that fail?
Regards,
Amit (4 Replies)
Hi All,
I have made the simple following program :-
#include <string>
#include <iostream>
using namespace std;
class A{
private: int val;
public :
A(){cout<<"In A()"<<endl;}
A (const A& aa)
{
cout<<"In copy c'tor"<<endl;
}
};
A f(... (1 Reply)
I am new to PHP and UNIX. I am using Apache to do my testing on a Windows Vista machine.
I am getting this error when I am trying to connect to a web service. I did a search and did not see any posts that pertain to this.
Here is my function:
<?php
function TRECSend($a, $b, $c, $d,... (0 Replies)
I have a code as following:
#include <iostream>
#include <algorithm>
#include <list>
using namespace std;
//the class Nth is a predicates
class Nth{
private:
int nth;
int count;
public:
Nth(int n):nth(n),count(0){}
bool operator()(int){
... (2 Replies)
Hello,
I am new to programming shared objects and I was hoping someone could tell me if what I want to do is possible, or else lead me in the right direction.
I have a main program that contains an abstract base class. I also have a subclass that I'm compiling as a shared object. The subclass... (13 Replies)
Hi,
If I run the following program
class A {
public:
A() { cout << "default" << endl; }
A(const A&) { cout << "copy" << endl; }
};
A tmp;
A fun() {
return tmp;
}
A test() {
A tmp;
cout << &tmp << endl;
return tmp;
} (1 Reply)
I am learning about C++ and today am reading concepts for Constructor but it seems a bit difficult to grab it fully. Please anyone explain in simple words about Constructor? (1 Reply)
How to initialize an object of class say "A", with an object of type say "B".
The following code give the error message "error: conversion from âAâ to non-scalar type âBâ requested"
#include <iostream>
using namespace std;
class B;
class A{
public:
A() { cout <<"\nA()" << endl; }
... (1 Reply)
Discussion started by: techmonk
1 Replies
LEARN ABOUT DEBIAN
ropkg::exceptions
RoPkg::Exceptions(3pm) User Contributed Perl Documentation RoPkg::Exceptions(3pm)NAME
RoPkg::Exceptions - exceptions used by RoPkg packages
DESCRIPTION
RoPkg::Exceptions is a collection of predefined exceptions used by all modules from RoPkg namespace.
SYNOPSIS
#!/usr/bin/perl
use strict;
use warnings;
use RoPkg::Exceptions;
sub main {
eval {
if ( $#ARGV == -1 ) {
Param::Missing->throw('No parameter found');
}
};
if ( my $e = Exception::Class->caught('Param::Missing') ) {
print STDERR $e->message,$/,$e->trace,$/;
}
}
main();
It is very possible that you don't find a good reason for using exceptions from this example. And you are right. This example is kind of
silly. But, try to use exceptions in a real project. Then, you will apreciate their real value.
DEPENDENCIES
RoPkg::Exceptions require perl 5.008 or later and the Exception::Class module.
Exceptions List
The following exceptions are defined in this class:
*) General - general pourpose exception
*) OutsideClass - raised when a method is called outside a class instance
*) File - the base for all file related exceptions . This exception has the filename parameter, who can be used to specify the path to the
file. filename parameter can be used by all derivated exceptions. The following exceptions are derivated from File:
*) File::NotFound - the file was not found
*) File::Open - error while opening file
*) File::Create - could not create file
*) Dir - the base for all directory related exceptions . This exception has the dirname parameter, who can be used to specify the path to
the directory. dirname parameter can be used by all derivated exceptions. The following exceptions are derivated from Dir:
*) Dir::NotFound - the directory was not found
*) Dir::Open - error while opening directory
*) Dir::Create - could not create directory
*) Param - the base for all parameters related exceptions. This exception has the name parameter, who can be used to specify the parameter
name. name can be used by all derivated exceptions. The following exceptions are derivated from Param:
*) Param::Missing - the parameter was not found
*) Param::Unknown - the parameter is unknown
*) Param::Wrong - the parameter has the wrong value or is not defined
*) DB - the base for all database related exceptions. This exception has the following parameters: dsn, user and pass . This exception (and
the ones derivated from her) are mostly used in RoPkg::DB class. Of course, this doesn't means that you can't use them in your application
;) .The following exceptions are derivated from DB:
*) DB::Connect - raised when the connection with the database could not be established
*) DB::ConnExists - raised when a connection with the same name already exists.
*) DB::ConnNotFound - the requested connection was not found
*) DB::NoResults - the sql query returned no results
Exceptions Tree
ROOT
General
OutsideClass
File
File::NotFound
File::Open
File::Create
Dir
Dir::NotFound
Dir::Open
Dir::Create
Param
Param::Missing
Param::Unknown
Param::Wrong
DB
DB::Connect
DB::ConnExists
DB::ConnNotFound
DB::NoResults
SEE ALSO
RoPkg::Utils
AUTHOR
Subredu Manuel <diablo@iasi.roedu.net>
VERSION
The current version is 0.2.1
DIAGNOSTICS
The tests for this module are located in t directory. To run those tests, use the following command: make test
SUBROUTINES /METHODS
This module does not have any public methods.
INCOMPATIBILITIES
None known to me
PERL CRITIC
This module is perl critic level 1 compliant with 1 exception.
BUGS AND LIMITATIONS
No known bugs. If you find one (or many) please send me a detailed report.
CONFIGURATION AND ENVIRONMENT
No configuration file or environment variables are used by this module.
LICENSE AND COPYRIGHT
Copyright (C) 2005 Subredu Manuel. All Rights Reserved. This module is free software; you can redistribute it and/or modify it under the
same terms as Perl itself. The LICENSE file contains the full text of the license.
perl v5.8.8 2006-06-09 RoPkg::Exceptions(3pm)