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c++ Programming Glossary: becauseWhat can I use to profile C++ code in Linux? http://stackoverflow.com/questions/375913/what-can-i-use-to-profile-c-code-in-linux stack. Call graphs don't give you the same information because 1 they don't summarize at the instruction level and 2 they give.. any program and it seems to work better on bigger programs because they tend to have more problems to find. P.S. This can also..
http://stackoverflow.com/questions/4172722/what-is-the-rule-of-three operator . Its job is generally a little more complicated because the target object is already in some valid state that needs.. name would delete the array containing the source string because when you write x x both this name and that.name contain the.. of the time you do not need to manage a resource yourself because an existing class such as std string already does it for you...
Undefined Behavior and Sequence Points http://stackoverflow.com/questions/4176328/undefined-behavior-and-sequence-points 1 same as above i parsed as i i i i i Undefined Behaviour because there's no sequence point between ` i` right most and assignment.. Example 1 std printf d d i i invokes Undefined Behaviour because of Rule no 2 Example 2 a i i or a i i or a i i etc is disallowed.. no 2 Example 2 a i i or a i i or a i i etc is disallowed because one of the accesses of i the one in a i has nothing to do with..
http://stackoverflow.com/questions/4421706/operator-overloading of and use shortcut semantics. While the user defined ones because they are syntactic sugar for method calls do not use shortcut..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c denotes an array then array to pointer decay will kick in because adding an array and an integer is meaningless there is no plus.. of an array then array to pointer decay is not necessary because the pointer on which i is going to be added already exists .. template argument deduction a bit harder for the compiler because in that case the first argument is an array but the second argument..
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 many dependent names for which typename is not necessary because the compiler can with the applicable name lookup in the template.. the following is parsed boost function int f Possibly not because it might look obvious to a human reader. Not so for the compiler...
Can a local variable's memory be accessed outside its scope? http://stackoverflow.com/questions/6441218/can-a-local-variables-memory-be-accessed-outside-its-scope you gave up the right to live in a predictable safe world because you chose to break the rules of the system. C is not a safe.. are usually generated as storage on a stack data structure because a stack has the property that the first thing pushed on it is.. this particular hotel . We use stacks for temporary stores because they are really cheap and easy. An implementation of C is not..
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 with x as argument. The winner is the conversion function Because if we have two candidate functions both accepting a reference..
what is the difference between const int*, const int * const, int const * http://stackoverflow.com/questions/1143262/what-is-the-difference-between-const-int-const-int-const-int-const is like a reference with out the extra syntactic sugar. Because of this fact usually you would use a reference where you would..
http://stackoverflow.com/questions/1647631/c-state-machine-design variables and return the new state for the state machine. Because they all follow the same form and take no parameters there's..
What 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 Such names are also reserved in namespace std 17.4.3.1 . Because C is based on the C standard 1.1 2 C 03 and C99 is a normative..
When does invoking a member function on a null instance result in undefined behavior? http://stackoverflow.com/questions/2474018/when-does-invoking-a-member-function-on-a-null-instance-result-in-undefined-beha a doesn't crash because the this pointer is never used. Because b dereferences the this pointer this .x 5 and this is null the..
Calling class method through NULL class pointer http://stackoverflow.com/questions/2505328/calling-class-method-through-null-class-pointer to exploit this implementation feature. And here is why Because standard states it yields undefined behavior could anyone give..
Dynamically allocating an array of objects http://stackoverflow.com/questions/255612/dynamically-allocating-an-array-of-objects int i 0 i 5 i arrayOfAs i A 3 But this blows up terribly. Because the new A object created with the A 3 call gets destructed when.. to assign the value onto the result of the array access. Because you did not define this operator the compiler generated one..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom the parameter's scope ends and its destructor is called. Because the idiom repeats no code we cannot introduce bugs within the.. the Rule of Three is now The Rule of Four and a half . Why Because not only do we need to be able to copy construct our resource.. and swap idiom. Footnotes Why do we set mArray to null Because if any further code in the operator throws the destructor of..
Can we increase the re-usability of this key-oriented access-protection pattern? http://stackoverflow.com/questions/3324898/can-we-increase-the-re-usability-of-this-key-oriented-access-protection-pattern an improvement though. Mostly saves on repeating yourself. Because template parameters cannot be friends we have to use a macro..
http://stackoverflow.com/questions/3582001/advantages-of-using-forward gives so called universal references . Why is this useful Because combined we maintain the ability to keep track of the value..
Can someone explain this template code that gives me the size of an array? http://stackoverflow.com/questions/437150/can-someone-explain-this-template-code-that-gives-me-the-size-of-an-array of the passed array size_t size_of_a sizeof array_size a Because an array of char having n elements has sizeof n that will give.. time so you can do int havingSameSize sizeof array_size a Because the function never is actually called it doesn't need to be..
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 is this c templates c faq share improve this question Because when instantiating a template the compiler creates a new class..
What are access specifiers? Should I inherit with private, protected or public? http://stackoverflow.com/questions/5447498/what-are-access-specifiers-should-i-inherit-with-private-protected-or-public error prog.cpp 4 error ˜int Myclass x is protected Because the derived class can only access members of its own Base Class..
Why is iostream::eof inside a loop condition considered wrong? http://stackoverflow.com/questions/5605125/why-is-iostreameof-inside-a-loop-condition-considered-wrong problems c iostream c faq share improve this question Because iostream eof will only be set after reading the end of the stream... initialized data hopefully And on your second question Because if scanf ... ... EOF is the same as if inStream data .eof and..
Why should `new` be used as little as possible? http://stackoverflow.com/questions/6500313/why-should-new-be-used-as-little-as-possible Bookkeeping is more complex and allocation is slower. Because there is no implicit release point you must release the memory..
Singleton: How should it be used http://stackoverflow.com/questions/86582/singleton-how-should-it-be-used something new If you want to show off how much you know Because everyone else is doing it See cargo cult programmer in wikipedia..
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