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c++ Programming Glossary: asWhat are the rules about using an underscore in a C++ identifier? http://stackoverflow.com/questions/228783/what-are-the-rules-about-using-an-underscore-in-a-c-identifier you'll probably use m_foo . I've also seen myFoo occasionally. C# or possibly just .NET seems to recommend using just.. just .NET seems to recommend using just an underscore as in _foo . Is this allowed by the C standard c standards c faq.. not change in C 11 Reserved in any scope including for use as implementation macros identifiers beginning with an underscore..
What can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux look at the call stack. If there is some code that is wasting some percentage of the time 20 or 50 or whatever that is.. is no educated guesswork required. If you do have a guess as to what the problem is this will prove or disprove it. You may.. the remaining ones will take a larger percentage and be easier to spot on subsequent passes. Caveat programmers tend to..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three an object mean What are the copy constructor and the copy assignment operator When do I need to declare them myself How can.. I prevent my objects from being copied c copy constructor assignment operator c faq rule of three share improve this question.. object actually means. Let us consider a simple example class person std string name int age public person const std string..
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points environment it is said that the expression its evaluation has some side effect s . For example int x y where y is also an.. Sequence point is a point in time at which the dust has settled and all side effects which have been seen so far are.. arguments a and a . The behaviour is undefined in that case if a is considered to be a primitive type at a function call..
Is there a difference in C++ between copy initialization and direct initialization? http://stackoverflow.com/questions/1051379/is-there-a-difference-in-c-between-copy-initialization-and-direct-initializati constructor is needed too but this is not important below As you see copy initialization is in some way a part of direct.. so direct initialization will call it. Copy initialization As said above copy initialization will construct a conversion sequence..
Why is processing a sorted array faster than an unsorted array? http://stackoverflow.com/questions/11227809/why-is-processing-a-sorted-array-faster-than-an-unsorted-array are virtually useless. Further Reading Branch_predictor . As hinted from above the culprit is this if statement if data c..
What is the difference between a definition and a declaration? http://stackoverflow.com/questions/1410563/what-is-the-difference-between-a-definition-and-a-declaration is the difference between a definition and a declaration As title says the meaning of both eludes me. c c terminology c..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom should manage one resource only A successful solution As mentioned the copy and swap idiom will fix all these issues... sizes rather than allocating and copying entire arrays. Aside from this bonus in functionality and efficiency we are now..
http://stackoverflow.com/questions/356950/c-functors-and-their-uses a different value. This makes them nicely customizable. As the last lines show you often pass functors as arguments to..
What are rvalues, lvalues, xvalues, glvalues, and prvalues? http://stackoverflow.com/questions/3601602/what-are-rvalues-lvalues-xvalues-glvalues-and-prvalues referring to the object or function to which E points. As another example the result of calling a function whose return..
What can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux thread pool at a point in time as there is in Java. P.P.S As a rough generality the more layers of abstraction you have in..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c are no remaining references to str it will be deleted. As such you no longer have to worry about deleting it yourself...
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three alternative using a char and you should be convinced. As long as you stay away from raw pointer members the rule of three..
What are Aggregates and PODs and how/why are they special? http://stackoverflow.com/questions/4178175/what-are-aggregates-and-pods-and-how-why-are-they-special of scalar type holds its original value goto statement. As you may know it is illegal the compiler should issue an error..
http://stackoverflow.com/questions/4421706/operator-overloading between Member and Non member Common operators to overload Assignment Operator Input and Output Operators Function call operator.. won ™t compile or your users code will behave surprisingly. Assignment Operator There's a lot to be said about assignment... that you would find a reasonable use case for these 2 . 1 As with all rules of thumb sometimes there might be reasons to..
Why do I get “unresolved external symbol” errors when using templates? http://stackoverflow.com/questions/456713/why-do-i-get-unresolved-external-symbol-errors-when-using-templates in the template's source file and hence unavailable. As a result of all this the compiler just assumes that it's defined..
What are the barriers to understanding pointers and what can be done to overcome them? http://stackoverflow.com/questions/5727/what-are-the-barriers-to-understanding-pointers-and-what-can-be-done-to-overcome 1234My house h v after free xx34My house As you can see h still points to the remnants of the data in memory.. after losing pointer ttttNNNNNNNNNN 1234My house As you can see the old data is left intact in memory and will not..
What are the differences between pointer variable and reference variable in C++? http://stackoverflow.com/questions/57483/what-are-the-differences-between-pointer-variable-and-reference-variable-in-c So pointer and reference occupies same amount of memory As a general rule Use references in function parameters and return..
WChars, Encodings, Standards and Portability http://stackoverflow.com/questions/6300804/wchars-encodings-standards-and-portability Use of the Windows specific _wfopen may be required. As a corollary there is in general no well defined notion of how..
Where do I find the current C or C++ standard documents? http://stackoverflow.com/questions/81656/where-do-i-find-the-current-c-or-c-standard-documents C 11 c c standards c faq share improve this question As of December 2012 the best locations by price for C C standards.. at Amazon contains the actual text of the standard. As mentioned in several answers here the draft versions of these..
What is the difference between char a[] = “string”; and char *p = “string”; http://stackoverflow.com/questions/9460260/what-is-the-difference-between-char-a-string-and-char-p-string google or otherwise. Please Do not modify the title again As the heading says What is the difference between char a string..
Dynamically set imageSource in ImageView Blackberry 10 http://stackoverflow.com/questions/17715533/dynamically-set-imagesource-in-imageview-blackberry-10 distributed under the License is distributed on an AS IS BASIS WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either.. distributed under the License is distributed on an AS IS BASIS WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND either express..
AJAX response not valid in C++ but Apache http://stackoverflow.com/questions/4861935/ajax-response-not-valid-in-c-but-apache same. The php file wich is the original response php echo AS echo rand 0 9 And the origional source code Socket.h http pastebin.com..
Move semantics & returning const values http://stackoverflow.com/questions/7138780/move-semantics-returning-const-values v IS NO LONGER ALIVE BY THE TIME WE ARE INSIDE std puts AS WE ARE TAKING THE c_str OF A TEMPORARY std string std puts c_str..
Where do I find the current C or C++ standard documents? http://stackoverflow.com/questions/81656/where-do-i-find-the-current-c-or-c-standard-documents from ansi.org available online free of charge C90 &ndash AS 3955 1991 141 from ansi.org the Australian version of C90 identical..
How to capture a unique_ptr into a lambda expression? http://stackoverflow.com/questions/8236521/how-to-capture-a-unique-ptr-into-a-lambda-expression after this point But it is not compile. Any idea UPDATE AS suggested some new syntax is required to explicitly specify..
Unique class type Id that is safe and holds across library boundaries http://stackoverflow.com/questions/922442/unique-class-type-id-that-is-safe-and-holds-across-library-boundaries for DERIVED NOT SURE IT WILL BE REALLY UNIQUE FOR EACH CLASS static const int id reinterpret_cast int typeid DERIVED .name.. INT BUT VALID AND CROSS PLATFORM CROSS VERSION COMPATBLE AS FAR AS YOU KEEP THE CLASS NAME return typeid DERIVED .name int.. VALID AND CROSS PLATFORM CROSS VERSION COMPATBLE AS FAR AS YOU KEEP THE CLASS NAME return typeid DERIVED .name int wmain..
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