”@
c++ Programming Glossary: here'sSystem(“pause”); - Why is it wrong? http://stackoverflow.com/questions/1107705/systempause-why-is-it-wrong &ldquo pause&rdquo Why is it wrong Here's a question that I don't quite understand The command system..
Why isn't sizeof for a struct equal to the sum of sizeof of each member? http://stackoverflow.com/questions/119123/why-isnt-sizeof-for-a-struct-equal-to-the-sum-of-sizeof-of-each-member at byte addresses that are multiples of their sizes. Here's an example using typical settings for an x86 processor struct..
What does the explicit keyword in C++ mean? http://stackoverflow.com/questions/121162/what-does-the-explicit-keyword-in-c-mean to another in order to get the right type for a parameter. Here's an example class with a constructor that can be used for implicit.. foo m_foo foo int GetFoo return m_foo private int m_foo Here's a simple function that takes a Foo object void DoBar Foo foo..
Easy way to use variables of enum types as string in C? http://stackoverflow.com/questions/147267/easy-way-to-use-variables-of-enum-types-as-string-in-c way to use variables of enum types as string in C Here's what I am trying to do typedef enum ONE TWO THREE Numbers I..
Is there a performance difference between i++ and ++i in C++? http://stackoverflow.com/questions/24901/is-there-a-performance-difference-between-i-and-i-in-c i and i are making calls to one of the operator functions. Here's a standard pair of these functions Foo Foo operator called for..
Is it possible to write a C++ template to check for a function's existence? http://stackoverflow.com/questions/257288/is-it-possible-to-write-a-c-template-to-check-for-a-functions-existence on if a certain member function is defined on a class Here's a simple example of what I would want to write template class.. can check if a given class does provide a certain method. Here's the working code #include iostream struct Hello int helloworld..
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom but it needs operator to work correctly. A failed solution Here's how a naive implementation might look the hard part dumb_array..
Printing lists with commas C++ http://stackoverflow.com/questions/3496982/printing-lists-with-commas-c T charT traits operator T const item Here's the only real change from ostream_iterator Normally the ' os..
When to use virtual destructors? http://stackoverflow.com/questions/461203/when-to-use-virtual-destructors at the following snippet Base b new Derived use b delete b Here's the problem Since Base's destructor is not virtual and b is..
How to execute a command and get output of command within C++? http://stackoverflow.com/questions/478898/how-to-execute-a-command-and-get-output-of-command-within-c the system function but that will just execute a command. Here's an example of what I'm looking for std string result system..
What does T&& (double ampersand) mean in C++11? http://stackoverflow.com/questions/5481539/what-does-t-double-ampersand-mean-in-c11 It declares an rvalue reference standards proposal doc . Here's an introduction to rvalue references http www.artima.com cppsource.. references http www.artima.com cppsource rvalue.html . Here's a fantastic in depth look at rvalue references by one of Microsoft's..
When to use forward declaration? http://stackoverflow.com/questions/553682/when-to-use-forward-declaration type. Assuming the following forward declaration. class X Here's what you can and cannot do. What you can do with an incomplete..
How do I expand a tuple into variadic template function's arguments? http://stackoverflow.com/questions/687490/how-do-i-expand-a-tuple-into-variadic-template-functions-arguments c c 11 arguments tuples share improve this question Here's my code if anyone is interested Basically at compile time the..
How to generate a stacktrace when my gcc C++ app crashes http://stackoverflow.com/questions/77005/how-to-generate-a-stacktrace-when-my-gcc-c-app-crashes fault. Documentation can be found in the libc manual . Here's an example program that installs a SIGSEGV handler and prints..
Why is one loop so much slower than two loops? http://stackoverflow.com/questions/8547778/why-is-one-loop-so-much-slower-than-two-loops will appear at the same offset from a page boundary. Here's the test code int main const int n 100000 #ifdef ALLOCATE_SEPERATE..
http://stackoverflow.com/questions/988158/take-the-address-of-a-one-past-the-end-array-element-via-subscript-legal-by-the you're obviously not allowed to dereference it either. Here's what the standard has to say on the subject 5.7 5 When an expression..
C++ convert hex string to signed integer http://stackoverflow.com/questions/1070497/c-convert-hex-string-to-signed-integer you want to do... If you don't feel like using boost here's a light version of lexical cast which does no error checking..
What does the explicit keyword in C++ mean? http://stackoverflow.com/questions/121162/what-does-the-explicit-keyword-in-c-mean takes a Foo object void DoBar Foo foo int i foo.GetFoo and here's where the DoBar function is called. int main DoBar 42 The parameter..
http://stackoverflow.com/questions/12135518/is-faster-than amount of time. This one is a little tricky to answer but here's what I can give In the Intel Instruction Set Reference they..
Get the IP Address of local computer http://stackoverflow.com/questions/122208/get-the-ip-address-of-local-computer share improve this question If you use winsock here's a way http tangentsoft.net wskfaq examples ipaddr.html share..
Is gcc4.7 buggy about regular expressions? [duplicate] http://stackoverflow.com/questions/12530406/is-gcc4-7-buggy-about-regular-expressions people keep complaining on SO about libstdc 's regex code here's an explanation of why it's in the state it is That prototype..
initialize a const array in a class initializer in C++ http://stackoverflow.com/questions/161790/initialize-a-const-array-in-a-class-initializer-in-c class in C class a const int b 2 other stuff follows and here's the constructor a void The question is how do I initialize b..
http://stackoverflow.com/questions/162941/why-use-pointers in your array one single memory address to point at. So here's a few examples char x Allocate 6 bytes of memory for me and..
Best way to detect integer overflow in C/C++ http://stackoverflow.com/questions/199333/best-way-to-detect-integer-overflow-in-c-c determine the position of the highest one bit in a number here's a brute force method size_t highestOneBitPosition uint32_t a..
What are some uses of template template parameters in C++? http://stackoverflow.com/questions/213761/what-are-some-uses-of-template-template-parameters-in-c be a way to know the type inside the function. Finally here's a version which does work with std vector template template..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c split c faq stdstring share improve this question FWIW here's another way to extract tokens from an input string relying only..
http://stackoverflow.com/questions/2491707/memory-management-in-qt doesn't matter. For an example where the order does matter here's the documentation about object trees . If your MyClass is not..
Read whole ASCII file into C++ std::string http://stackoverflow.com/questions/2602013/read-whole-ascii-file-into-c-stdstring wrong results. Following KeithB's point in the comments here's a way to do it that allocates all the memory up front rather..
http://stackoverflow.com/questions/313970/stl-string-to-lower-case to get away with not iterating through each character. There's no way to know whether the character is lowercase or uppercase.. or uppercase otherwise. If you really hate tolower here's a non portable alternative that I don't recommend you use char..
http://stackoverflow.com/questions/4421706/operator-overloading according to votes rather than the time they were given here's an index of the answers in the order in which they make most.. users code will behave surprisingly. Assignment Operator There's a lot to be said about assignment. However most of it has already..
Calling a java method from c++ in Android http://stackoverflow.com/questions/5198105/calling-a-java-method-from-c-in-android java method call from c while java calls native method. So here's the java code public class MainActivity extends Activity private..
#include all .cpp files into a single compilation unit? http://stackoverflow.com/questions/543697/include-all-cpp-files-into-a-single-compilation-unit incremental building. And it's a PITA to maintain. EDIT here's the first google link for more info http buffered.io posts the..
Guaranteed lifetime of temporary in C++? http://stackoverflow.com/questions/584824/guaranteed-lifetime-of-temporary-in-c 0 private std string m_str std vector char m_buffer And here's how you would use it this is from a crusty old API that can't.. that a local temporary variable will be valid as long as there's a reference to it does this apply to parent objects when there's.. a reference to it does this apply to parent objects when there's a reference to a member variable Thanks. c share improve..
Why does integer overflow on x86 with GCC cause an infinite loop? http://stackoverflow.com/questions/7682477/why-does-integer-overflow-on-x86-with-gcc-cause-an-infinite-loop c 0 do c i i cout i endl while i 0 cout c endl return 0 So here's the deal Signed integer overflow is technically undefined behavior...
http://stackoverflow.com/questions/9568852/overloading-by-return-type made up of function name cv qualifiers parameter types And here's the quote 1.3.11 signature the information about a function..
http://stackoverflow.com/questions/988158/take-the-address-of-a-one-past-the-end-array-element-via-subscript-legal-by-the mine Of course this is for operator . So just to be sure here's what the standard says about array subscripting 5.2.1 1 The.. E1 E2 is identical by deļ¬nition to E1 E2 Of course there's an obvious caveat Your example doesn't actually show an out..
|