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c++ Programming Glossary: secondIs 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 doesn't do any initialization for a POD Read 8.5 9 . The second copy initializes Value initializes a temporary and then copies..
Most vexing parse: why doesn't A a(()); work? http://stackoverflow.com/questions/1424510/most-vexing-parse-why-doesnt-a-a-work of an object A a B declares an object However in the second case doing the same leads to a compile error A a compile error.. example which then doesn't work when reapplying it in the second example. Is the A a B workaround a specific exception written..
Do-While and if-else statements in C/C++ macros http://stackoverflow.com/questions/154136/do-while-and-if-else-statements-in-c-c-macros the same thing. Let's say you had something like your second macro. #define BAR X f x g x Now if you were to use BAR X in..
What is the equivalent of the C++ Pair<L,R> in Java? http://stackoverflow.com/questions/156275/what-is-the-equivalent-of-the-c-pairl-r-in-java between the two values how do you know what first and second mean . A better practice is to write a very simple class like.. a class Entry key value rather than a generic Pair first second that doesn't tell me anything about what it's supposed to do...
What is the copy-and-swap idiom? http://stackoverflow.com/questions/3279543/what-is-the-copy-and-swap-idiom better if the operator could work properly without it. The second is that it only provides a basic exception guarantee. If new.. public ... friend void swap dumb_array first dumb_array second nothrow enable ADL not necessary in our case but good practice.. the two classes are effectively swapped swap first.mSize second.mSize swap first.mArray second.mArray ... Now not only can..
RAII and smart pointers in C++ http://stackoverflow.com/questions/395123/raii-and-smart-pointers-in-c we're holding onto the file longer than we need to. The second problem is what if an exception is thrown before we close the.. is thrown before we close the file Java solves the second problem using a finally clause try File file new File path to..
http://stackoverflow.com/questions/4810664/how-do-i-use-arrays-in-c a pointer to a pointer which trivially succeeds. On the second line it detects an assignment from an array to a pointer. Since.. x 0 x 0 n Note that it is illegal to provide x n as the second argument since this is equivalent to x n and the sub expression.. in that case the first argument is an array but the second argument is a pointer. Again array to pointer decay kicks in...
Why is iostream::eof inside a loop condition considered wrong? http://stackoverflow.com/questions/5605125/why-is-iostreameof-inside-a-loop-condition-considered-wrong with correctly initialized data hopefully And on your second question Because if scanf ... ... EOF is the same as if inStream..
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 h v ttttNNNNNNNNNN 1234My house Memory layout after second allocation h v ttttNNNNNNNNNN ttttNNNNNNNNNN 1234My house.. chose a fixed size array. To set the stage assume that the second house we allocate will for some reason be placed before the.. placed before the first one in memory. In other words the second house will have a lower address than the first one. Also they're..
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 is needed and reclaim it when it is no longer needed. The second is to have some sort of short lived storage area where the lifetime.. when memory is detected to be corrupt billions of nanoseconds after the corruption happened when it is very hard to figure..
Why does the use of 'new' cause memory leaks? http://stackoverflow.com/questions/8839943/why-does-the-use-of-new-cause-memory-leaks to it to delete in order to clean it up However your second example is worse you're dereferencing the pointer and making..
Why not use pointers for everything in C++? http://stackoverflow.com/questions/1064325/why-not-use-pointers-for-everything-in-c one Heap allocations are slow. Stack allocations are fast. Second and much more important is RAII . Because the stack allocated..
Is there a difference between i==0 and 0==i? [duplicate] http://stackoverflow.com/questions/10656419/is-there-a-difference-between-i-0-and-0-i are the differences First code if i 0 do instructions here Second code if 0 i do instructions here What is the difference between..
http://stackoverflow.com/questions/162941/why-use-pointers You can reach any element in the array like this printf Second char is c a 1 Index 1 since the array starts with element 0... starts with element 0. Or you could equally do this printf Second char is c a 1 The pointer operator the is needed since we are.. above and we wouldn't have had to put the in front printf Second char is s a 1 WRONG But this would not have just printed the..
Beyond Stack Sampling: C++ Profilers http://stackoverflow.com/questions/4394606/beyond-stack-sampling-c-profilers at all possible especially when profiling threaded code. Second Sampling profilers generate gobs of data. The data is extremely..
Calling virtual method in base class constructor http://stackoverflow.com/questions/448258/calling-virtual-method-in-base-class-constructor protected abstract LoadState XElement definition Second option using a two step process public class BaseObject public..
C++11 rvalues and move semantics confusion http://stackoverflow.com/questions/4986673/c11-rvalues-and-move-semantics-confusion 1 2 3 4 5 return tmp std vector int rval_ref return_vector Second example std vector int return_vector void std vector int tmp.. you obviously can't use rval_ref in a non const manner. Second example std vector int return_vector void std vector int tmp..
Is C# really slower than say C++? http://stackoverflow.com/questions/5326269/is-c-sharp-really-slower-than-say-c actually want to it's usually pretty easy to trigger it. Second optimizing code like most other optimization problems is largely.. out on a server and nobody spends time waiting for it. Second an executable can be generated once and used many times by many..
Is Global Memory Initialized in C++ http://stackoverflow.com/questions/60653/is-global-memory-initialized-in-c Global Memory Initialized in C And if so how Second Clarification When a program starts up what is in the memory..
If statement inside a cuda kernel http://stackoverflow.com/questions/6179295/if-statement-inside-a-cuda-kernel void kernel switch action case 1 First code break case 2 Second code break template void kernel 1 template void kernel 2 share..
c++ boost get current time in milliseconds http://stackoverflow.com/questions/6734375/c-boost-get-current-time-in-milliseconds 0 On my win7 machine. The first out is either 0 or 1000. Second resolution. The second one is nearly always 500 because of the..
Subclass/inherit standard containers? http://stackoverflow.com/questions/6806173/subclass-inherit-standard-containers in your derived class. Basic rules for virtual dtors Second it is really bad design. And there are actually several reasons..
http://stackoverflow.com/questions/69112/what-is-a-symbol-table files it's processing and stick the final location there. Second there's also the symbol table in a shared library or DLL. This..
Executing cv::warpPerspective for a fake deskewing on a set of cv::Point http://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint right they MUST be in the same order in the other vector. Second to have the resulting image contain only the object of interest..
Read integers from a text file with C++ ifstream http://stackoverflow.com/questions/8116808/read-integers-from-a-text-file-with-c-ifstream of integers ended with ' n' for example First line 0 1 4 Second line 1 0 4 3 2 Thrid line 2 1 3 Fourth line 3 1 2 4 Fifth line..
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