473,851 Members | 2,245 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

about "friend name injection"

Code from book <<C++ templates>>
template<typena me T>
class C {
friend void f();
friend void f(C<T> const&);

void g (C<int>* p)
f(); // Is f() visible here?
f(*p); // Is f(C<int> const&) visible here?
Author say,"The trouble is that if friend declarations are visible in
the enclosing namespace, then instantiating a class template may make
visible the declaration of ordinary functions"?

What this means? Why "instantiat ing a class template may make visible
the declaration of ordinary functions"?


Jul 22 '05 #1
0 1261

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

by: Erik T. Nomad | last post by:
I've created a link that will enable the reader of any page on my website to click it, enter an e-mail address, and have it arrive in that inbox with a hyperlink to the site. However, I'm wondering if there's a way to customize it further, such that the hyperlink they are sent is the web address of the page the "send to friend" link was on. I don't want to convert my entire site over to .asp, so having a pop-up .asp page seems to make...
by: Richard | last post by:
<a href="#" name="sample">link 1</a> <a href="#" name="sample">link 2</a> Would this be invalid use of the name? If I wanted to have a function that would be acted upon by detection of the "name", would this happen if all "name"s in a group were the same? I know ID can only be used once per document, what about "name"? If this is invalid, then if I went by a unique ID, such as sample1, sample2, sampl3, is there a way to eliminate the...
by: Zeng | last post by:
It's so messy w/o the "friend" relationship. Does anyone know why it was not supported in C#. It's almost about as bad as it doesn't support the inheritance hierarchy and method reference (calling tree) browsing that is supported in C++. I don't know how some could write a large scale object-oriented application w/o those. If you have overcome these limitations in C#, please share your thoughts and ideas. Thanks!
by: timbobd | last post by:
I have encountered a situation that I don't understand. When I call a sub of Friend scope (in an object with Friend scope), I am getting an error "Public member 'subname' not found in type 'myType'". Any idea why? Since Friend scope should be visible within my assembly, and everying is taking place within a single project, I don't understand why this error is occuring. Here is some illustrative code, where I would get the error in the...
by: AndyB | last post by:
I'm using xsd.exe to generate a typed-dataset. Then using typed dataset tables (datatables containing two columns--a name and a value) to bind to ASP.NET dropdown list controls (for the dropdown list option values). All was fine with the binding, until I moved the dataset to a different assembly, as I found out that the DataColumn property is "Friend" (in VB.NET). Could you point me how to make the DataColumn "public", or another work...
by: jbeteta | last post by:
Hello, I have a problem declaring variables. I need to create an object oRpte as ReportClass on WebForm1.aspx and be able to use its value on WebForm2.aspx. For declaring the property oRpte() on WebForm1.aspx, I use "Public Property" and I declare variable _oRpte as Friend Shared. That's my problem. If I don't declare _oRpte as Friend Shared, I can't use WebForm1.oRpte() on other webpage. If I declare _oRpte as Friend Shared, I can use...
by: Yarco | last post by:
In c++ we could modify the private variable in a class use friend keyword. How could it be done in php? class YourBag { int money; friend class Thief; // friend? };
by: shybe | last post by:
Ok, Im trying to create a "send this article to a friend" script for my blog, Right now its sending all the articles, but I want it to only send the article in which the form is attached to.
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look ! Part I. Meaning of...
by: Hystou | last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it. First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth. The Art of Business Website Design Your website is...
by: tracyyun | last post by:
Dear forum friends, With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own.... Now, this would greatly impact the work of software developers. The idea...
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms. Adolph will...
by: conductexam | last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one. At the time of converting from word file to html my equations which are in the word document file was convert into image. Globals.ThisAddIn.Application.ActiveDocument.Select();...
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.