class Param{
public:
Param(int aa, int bb){
a=aa;
b=bb;
}
int a,b;
};
void function(Param);
Code:
int main(){
function(2,3);
return 0;
}
Code:
void function(Param par){
cout<<par.a;
}
, and when I run it, I get the following message error:
Code:
.../main.cpp|21|error: conversion from ‘int’ to non-scalar type ‘Param’ requested|
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
Last edited by santiagorf; 06-26-2010 at 04:45 PM..
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
jifty::param::schema
Jifty::Param::Schema(3pm) User Contributed Perl Documentation Jifty::Param::Schema(3pm)NAME
Jifty::Param::Schema - Declare parameters of a Jifty action with ease.
SYNOPSIS
package MyApp::Action::Login;
use Jifty::Param::Schema;
use Jifty::Action schema {
param email =>
label is 'Email address',
is mandatory,
ajax validates;
param password =>
type is 'password',
label is 'Password',
is mandatory;
param remember =>
type is 'checkbox',
label is 'Remember me?',
hints is 'If you want, your browser can remember your login for you',
default is 0;
};
DESCRIPTION
This module provides a simple syntax to declare action parameters.
It re-exports "defer" and "lazy" from Scalar::Defer, for setting parameter fields that must be recomputed at request-time:
param name =>
default is defer { Jifty->web->current_user->name };
See Scalar::Defer for more information about "defer".
schema
The "schema" block from a Jifty::Action subclass describes an action for a Jifty application.
Within the "schema" block, the localization function "_" is redefined with "defer", so that it resolves into a dynamic value that will be
recalculated upon each request, according to the user's current language preference.
param
Each "param" statement inside the "schema" block sets out the name and attributes used to describe one named parameter, which is then used
to build a Jifty::Param object. That class defines possible field names to use in the declarative syntax here.
The "param" function is not available outside the "schema" block.
ALIASES
In addition to the labels provided by Jifty::Web::Form::Field and Jifty::Param, this module offers the following aliases:
ajax validates, # ajax_validates is 1
ajax canonicalizes, # ajax_canonicalizes is 1
order is -1, # sort_order is -1
default is 0, # default_value is 0
valid are qw( 1 2 3 ), # valid_values are qw( 1 2 3 )
available are qw( 1 2 3 ), # available_values are qw( 1 2 3 )
render as 'select', # render_as is 'select'
SEE ALSO
Object::Declare, Scalar::Defer
merge_params HASHREF HASHREF
Takes two hashrefs. Merges them together and returns the merged hashref.
- Empty fields in subclasses don't override nonempty fields in superclass anymore.
- Arrays don't merge; e.g. if parent class's valid_values is [1,2,3,4], and
subclass's valid_values() is [1,2], they don't somehow become [1,2,3,4,1,2].
BUG: This should either be a private routine or factored out into Jifty::Util
perl v5.14.2 2010-09-25 Jifty::Param::Schema(3pm)