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c++ Programming Glossary: coutWhy 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 static_cast double clock start CLOCKS_PER_SEC std cout elapsedTime std endl std cout sum sum std endl Without std sort.. start CLOCKS_PER_SEC std cout elapsedTime std endl std cout sum sum std endl Without std sort data data arraySize the code..
Why is “using namespace std;” considered bad practice? http://stackoverflow.com/questions/1452721/why-is-using-namespace-std-considered-bad-practice have using namespace std in our programs and that std cout and std cin are more proper. However they would always be vague..
What is this weird colon-member syntax in the constructor? http://stackoverflow.com/questions/1711990/what-is-this-weird-colon-member-syntax-in-the-constructor Foo public int bar Foo int num bar num int main void std cout Foo 42 .bar std endl return 0 What does this strange bar num..
http://stackoverflow.com/questions/236129/how-to-split-a-string-in-c down the road istringstream iss s do string sub iss sub cout Substring sub endl while iss c split c faq stdstring share.. iss istream_iterator string ostream_iterator string cout n Instead of copying the extracted tokens to an output stream..
Undefined, unspecified and implementation-defined behavior http://stackoverflow.com/questions/2397984/undefined-unspecified-and-implementation-defined-behavior n yes I know deprecated conversion p 0 'y' p 5 'w' std cout p The variable p points to the string literal hello n and the..
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 test T 0 sizeof char int main int argc char argv std cout has_helloworld Hello value std endl std cout has_helloworld.. char argv std cout has_helloworld Hello value std endl std cout has_helloworld Generic value std endl return 0 I've just tested..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c pointer afterwards one can access individual elements std cout x 3 x 7 std endl If x denotes an array then array to pointer.. is a bit clumsy C provides the alternative syntax x i std cout x 3 x 7 std endl Due to the fact that addition is commutative.. commutative the following code does exactly the same std cout 3 x 7 x std endl The definition of the indexing operator leads..
Pretty-print C++ STL containers http://stackoverflow.com/questions/4850473/pretty-print-c-stl-containers wchar_t and MyDelims needs to be defined for TChar. Usage cout pretty_print custom_delims MyDelims x . struct custom_delims_base.. for raw C style arrays. Usage int arr 1 2 4 8 16 std cout wrap_array arr ... namespace pretty_print template typename.. vv.reserve argc 1 vp.reserve argc 1 vd.reserve argc 1 std cout Printing pairs. std endl while argc std string s argv argc std..
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 code. int foo int a 5 return a int main int p foo cout p p 8 cout p And the code is just running with no runtime exceptions.. int foo int a 5 return a int main int p foo cout p p 8 cout p And the code is just running with no runtime exceptions The..
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