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c++ Programming Glossary: goesWhat 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 ptr new MyObject ptr DoSomethingUseful boost scopted_ptr goes out of scope the MyObject is automatically destroyed. ptr Oops.. p1 Oops the reference count of of p1 and p2 never goes to zero The objects are never destroyed To work around this..
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 the other path You look at the past history If the train goes left 99 of the time then you guess left. If it alternates then.. If it alternates then you alternate your guesses. If it goes one way every 3 times you guess the same... In other words you.. to the branch predictor since the branch consecutively goes the same direction many times. Even a simple saturating counter..
Is gcc4.7 buggy about regular expressions? [duplicate] http://stackoverflow.com/questions/12530406/is-gcc4-7-buggy-about-regular-expressions something I take responsibility and fix it and the same goes for the other maintainers. GCC is a mission critical tool for..
http://stackoverflow.com/questions/1265039/using-std-namespace long nested types. This is OK though because std count goes into the global namespace and the function count hides it. #include..
http://stackoverflow.com/questions/146452/what-are-pod-types-in-c and virtual members functions. Wikipedias article on POD goes into a bit more detail and defines it as A Plain Old Data Structure..
Unnamed/anonymous namespaces vs. static functions http://stackoverflow.com/questions/154469/unnamed-anonymous-namespaces-vs-static-functions Please see this SO question for more details. Credit goes to Mike Percy for bringing this to my attention. share improve..
How come a non-const reference cannot bind to a temporary object? http://stackoverflow.com/questions/1565600/how-come-a-non-const-reference-cannot-bind-to-a-temporary-object const reference in which case they die when the reference goes out of scope . Applying that rule it seems x is already dead..
What is the name of this operator: “-->”? http://stackoverflow.com/questions/1642028/what-is-the-name-of-this-operator The code #include stdio.h int main int x 10 while x 0 x goes to 0 printf d x I'd assume this is C since it works in GCC..
Convert std::string to const char* or char* http://stackoverflow.com/questions/347949/convert-stdstring-to-const-char-or-char memory is automatically freed if the smart pointer goes out of scope std vector This is the standard way does not require..
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 the pointer to the first member and vice versa. The list goes on and on... Conclusion It is important to understand what exactly..
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 you've forgotten that the house is no longer there and goes to visit it with failed results see also the part about an invalid.. occupies three address Main Street 1 3 and your address goes to the middle of the house. Any attempts to treat that part..
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 it. Most of the time. Until one day something truly awful goes wrong and the process explodes. This is problematic. There are..
What is “rvalue reference for *this”? http://stackoverflow.com/questions/8610571/what-is-rvalue-reference-for-this linked to that transformed overload is called. The same goes for the second call to 'f' second call to 'f' in 'main' f1 test..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks duration . It will get cleaned up automatically when it goes out of scope. When you write new T you're creating an object.. but deletes automatically This is a common idiom that goes by the not very descriptive name RAII Resource Acquisition Is..
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