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by: Stub |
last post by:
Docs says that "The compiler does not use an explicit constructor to
implement an implied conversion of types. It's purpose is reserved
explicitly for construction."
I put up code of three cases at the bottom. Hope you can help me understand
the "explicit" keyword and its usage. Specifically,
Is "explicit" keyword only associated with constructor in C++?
What's "implied conversion of types"?
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by: Tanmoy Bhattacharya |
last post by:
Hi,
This is a question about whether I am right that a particular syntactic
sugar is missing in C++.
Let me explain with an example. Let us say I have a class for complex
numbers, and I want people to be able to initialize real numbers (like
an object of type double) from it ... in such a context (or if someone
explicitly casts to double), the imaginary part is to be ignored.
However, I certainly do not want people to be able to ask...
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by: spamadress |
last post by:
Hello
I wonder why only constructors can be qualified with explicit to
prevent implicit conversion, but not conversion operators. To me the
following makes perfectly sense:
struct A {
explicit operator int() { return 0;} ;
};
void foo(int) {};
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by: Alex Sedow |
last post by:
Why explicit conversion from SomeType* to IntPtr is not ambiguous (according
to standart)?
Example:
// System.IntPtr
class IntPtr
{
public static explicit System.IntPtr (int);
public static explicit System.IntPtr (long);
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by: Michael C |
last post by:
If a class inherits from another class, say Form inherits from control, then
I can assign the Form to a variable of type Control without needing an
explicit conversion, eg
Form1 f = new Form1();
Control c = f;
An enum value inherits from int but it doesn't get implicitly converted:
HorizontalAlignment h = HorizontalAlignment.Center;
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by: Aaron Queenan |
last post by:
Given the classes:
class Class
{
public static implicit operator int(Class c)
{
return 0;
}
}
class Holder
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by: D.J. Stachniak |
last post by:
Hi,
I have a question about explicit constructors and the C++ standard.
Forgive me for my laziness in not pouring over the spec myself, but I
thought I'd ask first and read later. I have a class/app like so:
#include <string>
#include <iostream>
class UTF8string
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by: Noone |
last post by:
Hello all,
Ok, I want to create a program that will load plugins (dll's) from a
plugin folder. I can create the forms and put them into a dll but I
cannot actually add them dynamically at run time. I have tried to use
the LoadLibrary and GetProc functions, which sort of worked. I got
the pointer to the function but I cannot actually RUN the function
like I can in C++. I have heard some things about Invoking(?) I
believe but I cannot...
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by: coder_lol |
last post by:
Thanks everyone again for contributing to helping me clear C++
confusions. I did some serious reading on copy constructors and
assignments and I think I've got a good handle on the memory stuff.
Well, I came across Scott Meyer's SmartPtr example from some 10 years
ago. I like the template member function for type conversion to solve
inheritance issues.
On MSVS 2003, I get the below error, if I declare the constructor
SmartPtr(T*...
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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...
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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,...
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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...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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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...
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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...
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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
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by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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