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Why Sizeof Operator Cannot Be Overloaded


That means you can'toverload the scope resolution operator since it has no arguments. It's an operator. > thus this is done in the preprocessor and not in the compiler. Redefining operators in C++ Operators that cannot be Overloaded - WHY? What is the impact of Big Data on Internet of Things (IoT) Industry? useful reference

Only one of the two result operands is evaluated. Powered by Blogger. Source: CoolInterview.com I think the above answer is not appropriate .

According to me all these operators use name instead of operand ,so we can`t pass any name (either of variable,class) to Fresher Jobs | Experienced Jobs | Government Jobs | Walkin Jobs | Company Profiles | Interview Questions | Placement Papers | Companies In India | Consultants In India | Colleges In

Why Scope Resolution Operator Cannot Be Overloaded In C++

You can't memcpy it anywhere, you can't pass that size > to the stream::write, because the memory is not contuguous. and ?: (and sizeof). Related Sites Visual Studio Visual Studio Integrate VSIP Program Microsoft .NET Microsoft Azure Connect Forums Blog Facebook LinkedIn Stack Overflow Twitter Visual Studio Events YouTube Developer Resources Code samples Documentation Downloads What is the impact of Big Data on Healthcare Industry?

Welcome to the Coding Forums, the place to chat about anything related to programming and coding languages. Why Big Data is becoming so important? it cannot change the basic operations it performs or to create new operators Dheeraj Can dynamic_cast be overloaded? Which Operator Cannot Be Overloaded In C++ Using Friend Function Already because argument passing - in which order and whatnot is unspecified –Johannes Schaub - litb Apr 6 '09 at 1:40 1 @Johannes, the absense of an official ABI standard

O'Connor Guest I believe the reason is because sizeof is a macro instead of a function. Your name or email address: Do you already have an account? There is no analogous language feature that could be applied to a function. .* operator: Same as the dot operator. How to prove that authentication system works, and that the customer is using the wrong password?

The compiler probably doesn't actually do this. Why All Operators Cannot Be Overloaded In C++ Please include your IP address in your email. 403. Make your own partition magic software. It probably calculates the size of a type (including a class) and stores it, instead of recalculating every time you write sizeof(X).

Why Can't We Overload Some Operators In C++

The exact function definition could be better option. –Alien01 Apr 5 '09 at 13:01 sizeof cannot be a function because it accepts both types and values: compare sizeof (int) What does a Big Data analyst do? Why Scope Resolution Operator Cannot Be Overloaded In C++ Build me a brick wall! Why Some Operators Cannot Be Overloaded In C++ View Answer Can you declare the override method static while the original method is non-static?

share|improve this answer edited Apr 5 '09 at 13:05 answered Apr 5 '09 at 12:58 Yuval Adam 86.4k62237331 It doesn't give implementation details . http://bovbjerg.net/cannot-be/which-of-the-following-operator-cannot-be-overloaded.php View Answer Difference between realloc() and free()? Operator overloads are simply functions, and do what they do at run time. Privacy Policy Terms and Rules Help Connect With Us Log-in Register Contact Us Forum software by XenForo™ ©2010-2015 XenForo Ltd. Operators That Cannot Be Overloaded In C++

You'll be able to ask questions about coding or chat with the community and help others. Browse other questions tagged c++ or ask your own question. SweatyFinger, Dec 2, 2006, in forum: ASP .Net Replies: 2 Views: 2,874 Smokey Grindel Dec 2, 2006 #define ARR_SIZE sizeof(arr)/sizeof(arr[0]) Vinu, May 11, 2005, in forum: C Programming Replies: 13 Views: this page The compiler will insert the correct value - which it knows already.

For more details, see D&E. Which Operator Cannot Be Overloaded In C# lordslimey posted Oct 3, 2016 How to remove an empty line which is created when i deleted a element from my xml file? However, ABIs are platform- and often vendor-specific, i.e.

What do you hope to learn from seeing an implementation of it?

One could imagine allowing overloading of x::y where x is an object rather than a namespace or a class, but that would - contrary to first appearances - involve introducing new It can't be overloaded because built-in operations such as incrementing a pointer into an array implicitly depend on it. It is also allowed to e.g. We Can Change The Basic Meaning Of An Operator In C++ Nov 22 '09 #2 reply Expert Mod 5K+ P: 8,922 weaknessforcats All operators that can be overloaded must have at least one argument that is a user-defined type.

Please join our friendly community by clicking the button below - it only takes a few seconds and is totally free. And another sentiment: what would be the use of that > reported size? View Answer Please Note: We keep on updating better answers to this site. http://bovbjerg.net/cannot-be/why-dot-operator-cannot-be-overloaded.php Sharepoint 2013: Rest API - does header need to include X-RequestDigest?

thanks in much lokicer Lokicer, Mar 5, 2005 #1 Advertisements Michael P. on x86 and (say) IA64 the size of A below will be different because IA64 does not permit unaligned data access.