c++ Programming Glossary: needWhat is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom swap share improve this question Overview Why do we need it Any class that manages a resource a wrapper like a smart.. that manages a resource a wrapper like a smart pointer needs to implement The Big Three . While the goals and implementation.. nuanced and difficult. How should it be done What pitfalls need to be avoided The copy and swap idiom is the solution and elegantly..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three constructor and the copy assignment operator When do I need to declare them myself How can I prevent my objects from being.. the target object is already in some valid state that needs to be dealt with. Since we declared neither the copy constructor.. const person that delete The rule of three Sometimes you need to implement a class that manages a resource. Never manage multiple..
http://stackoverflow.com/questions/4421706/operator-overloading change the standard library 䏭 stream types. That 䏭 why you need to implement these operators for your own types as non member.. be cheap to copy. If a function object absolutely needs to use data which is expensive to copy it is better to store.. operators which for member functions will be this needs to be const too. So a comparison operator implemented as a..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c vector T since C 98 and std array T n since C 11 so the need for arrays does not arise quite as often as it does in C. However..
Why can templates only be implemented in the header file? http://stackoverflow.com/questions/495021/why-can-templates-only-be-implemented-in-the-header-file int param do stuff using int Consequently the compiler needs to have access to the implementation of the methods to instantiate.. explicitly instantiate all the template instances you'll need Foo.h no implementation template typename T struct Foo ... ..
Where and why do I have to put the “template” and “typename” keywords? http://stackoverflow.com/questions/610245/where-and-why-do-i-have-to-put-the-template-and-typename-keywords or another FAQ entry. In order to parse a C program you need to know for certain names whether they name types or non types... parsed Usually for simple languages for parsing you don't need to know the meaning of a name but can just grammatically analyze.. should parse this. If t x is a dependent name then we need to prefix it by typename to tell the compiler to parse it in..
What is a smart pointer and when should I use one? http://stackoverflow.com/questions/106508/what-is-a-smart-pointer-and-when-should-i-use-one explicitly destroy the object when it is no longer useful. Need to create the object to achieve some goal MyObject ptr new MyObject..
Why do I need strand per connection when using boost::asio? http://stackoverflow.com/questions/12794107/why-do-i-need-strand-per-connection-when-using-boostasio within a strand as read did not wrap it. void handle_read Need to post read into the strand otherwise the async_receive would..
http://stackoverflow.com/questions/13216041/number-of-tuples a j a k H. 1 T 100 1 N 1000 1 L H 1000000 1 a i 1000000 PS Need Better Solution than N2logn c c algorithm share improve this..
How can I find all permutations of a string without using recursion? http://stackoverflow.com/questions/1326824/how-can-i-find-all-permutations-of-a-string-without-using-recursion to find all the permutations of a string of any length. Need a non recursive form of the same. a C language implementation..
Need a fast random generator for c++ http://stackoverflow.com/questions/1640258/need-a-fast-random-generator-for-c a fast random generator for c I'm trying to do some opt 3 swapping..
http://stackoverflow.com/questions/1744665/need-help-with-getline help with getline Is there a reason why if in my program I..
Need Advice on Implementing a Time-limited Trial http://stackoverflow.com/questions/197999/need-advice-on-implementing-a-time-limited-trial Advice on Implementing a Time limited Trial I'm developing..
http://stackoverflow.com/questions/3349956/portable-c-build-system for any serious projects outside the Boost itself. Need to find library Can't need to find header Can't. Need to do.. Need to find library Can't need to find header Can't. Need to do something outside of simple build and you have not idea..
Example of how to use boost upgradeable mutexes http://stackoverflow.com/questions/3896717/example-of-how-to-use-boost-upgradeable-mutexes stuff from it message ... UUID id message GetSessionID Need to obtain a lock here. shared lock multiple readers How is that..
http://stackoverflow.com/questions/4282961/how-to-call-c-sharp-from-c way to call a c# class method from C Native not C CLI code Need simple and elegant way c# c share improve this question ..
how to find memory leak in c++ code/project http://stackoverflow.com/questions/6261201/how-to-find-memory-leak-in-c-code-project share improve this question Instructions Things You'll Need Proficiency in C C compiler Debugger and other investigative..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle r9 rE rA _mm_sub_pd rA rD rB _mm_mul_pd rB rC i Need to renormalize to prevent denormal overflow. r0 _mm_and_pd r0.. r9 rE rA _mm256_sub_pd rA rD rB _mm256_mul_pd rB rC i Need to renormalize to prevent denormal overflow. r0 _mm256_and_pd..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks should do You should prefer automatic storage duration. Need a new object just write A a a new object of type A B b a new..
Need for predictable random generator http://stackoverflow.com/questions/910215/need-for-predictable-random-generator for predictable random generator I'm a web game developer and..
If I want to specialise just one method in a template, how do I do it? http://stackoverflow.com/questions/9330561/if-i-want-to-specialise-just-one-method-in-a-template-how-do-i-do-it method split void split ... actual code here not empty Need to specialise this in the Triangle class case.. something like..
What XML parser should I use in C++? http://stackoverflow.com/questions/9387610/what-xml-parser-should-i-use-in-c flowchart So the first question is this What do you need I Need Full XML Compliance OK so you need to process XML. Not toy XML.. question is Does your API need to conform to DOM or SAX I Need Exact DOM and or SAX Conformance OK so you really need the API.. encodings it can parse. It uses the MIT license. I Do Not Need Full XML Compliance OK so full XML compliance doesn't matter..
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