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Custom STL-like iterator for RedBlackTree implementation
With these it helps You would be suprised to know that a std::set is implemented as an Red-Black Tree. What are your reasons for writing one yourself?For a real answer: Writing iterators isn't trivial. You should read about the common differences bet
TAG :cpp
Date : October 19 2020, 11:12 PM , By : swimbikerun
non ascii char to binary or integer in c++
help you fix your problem The characters are already numbers/binary - in C, a character is an integer type.What might be confusing you is that the string literal "\377\242\242" has 3 characters, not 12. In C, a \ followed by 1-3 digits between 0-7 is
TAG :cpp
Date : October 19 2020, 11:12 PM , By : user68112
Refactoring an id type
Any of those help Presumably your new type isn't numeric - it's something like a small struct?
TAG :cpp
Date : October 19 2020, 11:12 AM , By : Sebastian Souza Tarn
C/C++ Macro: How to generate two separate sections of code with one macro (boost preprocessor library?)
around this issue Macro tricks...If you want to expand a loop in a C macro, you need to have as many macroes as iteration (with the preprocessor, you may also play other tricks with including files recursively, but then you don't have a macro like in
TAG :cpp
Date : October 19 2020, 11:12 AM , By : Michael C-Intel
Why malloc always return NULL
I wish did fix the issue. You mentioned memory fragmentation and that would certainly be my first guess. Try downloading this application. Its called Address Space Monitor, and should be able to show you if its a fragmentation issue.
TAG :cpp
Date : October 19 2020, 11:12 AM , By : Murat A'ngın
Gauge Control for C++ Application
around this issue For wxWidgets there are the (free) wxIndustrial controls. Update 11/2015: last updated in 2007, no downloads but source code still available hereAlso you'll find more controls at wxCode.
TAG :cpp
Date : October 19 2020, 11:12 AM , By : slyval
How do I use Luabind and C++ to create an asset managing class?
I think the issue was by ths following , You may need to bind the vector type itself with some relevant methods, or try Luabind's return_stl_iterator, which provides for iteration (but not indexing) over STL-compatible containers.If you need more hel
TAG :cpp
Date : October 19 2020, 11:12 AM , By : user3850616
What's a good directory structure for larger C++ projects using Makefile?
Any of those help Separating the .cpp of the .h file is not always a good solution. Generally I separate both of them when it is used as a library (public header in include and private header with the source code).If it is a library, this structure i
TAG :cpp
Date : October 19 2020, 11:12 AM , By : mechahex
Shell Extension: DragQueryFile returns at most 16 (in Windows 7)
Does that help The IShellExtInit.Initialize() method is called once again, with full file list, after your command is invoked, just before IContextMenu.InvokeCommand() is called by the shell. Then you have the opportunity to collect the file list aga
TAG :cpp
Date : October 18 2020, 11:12 PM , By : ClubKemp
Input stream iterators and exceptions
it should still fix some issue failbit is set whenever a read operation fails to extract any characters, whether this is because it hit EOF or not.
TAG :cpp
Date : October 18 2020, 11:12 PM , By : TBcoding
Variable naming convention according to scope (class, method, global...)
hope this fix your issue There are many people who have created conventions - google for c++ naming conventionAlso there are style guides which also suggest ways of programming.
TAG :cpp
Date : October 18 2020, 11:12 PM , By : Kat L
How to prevent VC++ 9 linker from linking unnecessary global variables?
To fix this issue The MSDN (see the Arguments section, REF | NOREF arguments, 4th paragraph) specifies that You have to explicitly mark data as a COMDAT; use __declspec(selectany). for the linker to remove said unused data when using /OPT:REF.Have yo
TAG :cpp
Date : October 18 2020, 11:12 AM , By : Siddhant Swaroop
Which light C++ event/delegate (signal/slot) library should I choose?
To fix this issue My feeling is that http://www.codeproject.com/KB/cpp/ImpossiblyFastCppDelegate.aspx is a great implementation for games. No dynamic memory allocation, reasonable performance, simple to debug => great for games.I have used similar de
TAG :cpp
Date : October 18 2020, 11:12 AM , By : user3850954
not waiting for keyboard input (overloaded input stream operator) in C++
Does that help A common issue with input stream, especially in visual c++, is that you need .ignore(). This will prevent the input from getting ignored. If I remember correctly, just do cin.ignore() right before (or is it after) the first cin. I thin
TAG :cpp
Date : October 17 2020, 11:12 PM , By : justuser
Question about running a program at same speed in any computer
I wish this helpful for you I don't know what "Glut" is, but as a general rule of game development, I would never base movement speed off of how fast the computer can process the directives. That's what they did in the late 80's and that's why when y
TAG :cpp
Date : October 17 2020, 11:12 PM , By : Keith Yoder
Hot to get random date in range
wish of those help You can convert the dates to Unix timestamp. Randomly pick a timestamp between the two timestamps and convert it back to date.
TAG :cpp
Date : October 17 2020, 11:12 PM , By : Mohamed Mohamed
The Fastest Sorting function
around this issue Use the std::sort function which typically defaults to quicksort (but deals with the ugly edge cases of e.g. a fully sorted array taking O(n^2) time). Then measure the speed: if that's not good enough, describe details (e.g. how lar
TAG :cpp
Date : October 17 2020, 11:12 PM , By : Dewaine
How to write C .so library to subsitute existing C++ .so library?
I think the issue was by ths following , If you build and link with the new one, can you get it to link with the old one? It sounds like you generated a binary compatible library, but only in one direction.
TAG :cpp
Date : October 17 2020, 11:12 PM , By : lv42daze
Simplifying my program to convert numbers to from one base to another
To fix this issue I'm taking a beginner C++ course. I received an assignment telling me to write a program that converts an arbitrary number from any base between binary and hex to another base between binary and hex. I was asked to use separate func
TAG :cpp
Date : October 17 2020, 11:12 AM , By : Isaac Thomas
How to open an URL in a QTableView
may help you . You'll need to create a delegate to do the painting. The code should look something like this:
TAG :cpp
Date : October 17 2020, 11:12 AM , By : user3851338
How to put c++ string into char array
I wish did fix the issue. If I have something like
TAG :cpp
Date : October 17 2020, 11:12 AM , By : Joshua Diaz
Aligning doubles on 8-byte boundaries?
I wish this helpful for you Is there a common portable idiom in numerics code (I'm writing in D, but language-agnostic, C and C++ answers would be useful to me, too) to ensure that all stack-allocated doubles that are accessed frequently are aligned
TAG :cpp
Date : October 17 2020, 11:12 AM , By : Zouaghi Mariem
STL Vector Corruption Across VS Projects
Hope that helps The problem is that library and program have been compiled with different compiler options. As the result you've got different iterators implementation but with the same signature. It is known problem and Microsoft recommends to compi
TAG :cpp
Date : October 17 2020, 11:12 AM , By : user3851294
how to make data structures persistent in c++?
I hope this helps . Try Google Protocol Buffers or the Boost serialization library.
TAG :cpp
Date : October 17 2020, 11:12 AM , By : BodyBagz
Priority Queue Wrong Order
this one helps. Elements in your priority queue are pointers. Since you don't provide a function that takes 2 pointers to Node objects , default compare function compares 2 pointers.
TAG :cpp
Date : October 17 2020, 11:12 AM , By : Norma Vega Shek
Embedded C++, any tips to avoid a local thats only used to return a value on the stack?
around this issue How complex is SomeDataType? Does it have a lot of members? Does it do a lot of work in a constructor? If so, then I'd avoid this. If not, you may find the compiler will generate good code for this. For example, the compiler will pr
TAG :cpp
Date : October 16 2020, 11:12 PM , By : user3851475
On MacOSX, using g++, is std::vector .size() thread safe?
I wish this helpful for you If you are calling ONLY vec->size() you are safe. But this is somehow difficult to believe. As soon you call any changing method, such as push_back a race can cause to get the wrong size.
TAG :cpp
Date : October 16 2020, 11:12 PM , By : user3851464
Disabling multi core programmatically
will be helpful for those in need I think some workaround can be in setting affinity for main thread of your task for one core, than create threads with infinite loops for other cores and set them highest possible priority. But usually somthing wrong
TAG :cpp
Date : October 16 2020, 11:12 PM , By : user3851453
C++ : Getting HTTP status code from a URL
like below fixes the issue libcurl is another option. It is actually platform independent. The thing that you might not like with this library is that you will need some extra DLLs.
TAG :cpp
Date : October 16 2020, 11:12 PM , By : srugh
Why don't std::vector's elements need a default constructor?
it helps some times std::vector doesn't need the default constructor because it never uses it. Every time it needs to construct an element, it does it by using the copy constructor, because every time it has something to copy: either existing vector
TAG :cpp
Date : October 16 2020, 11:12 PM , By : Yøgèsh Räghûwáñshí T
Floating point calculation change depending on the compiler
I wish this helpful for you On x86, usually most calculations happen with 80-bit quantities, unless otherwise forced to be double-precision. Most other architectures I know of do all calculations in double-precision (again, unless otherwise overridde
TAG :cpp
Date : October 16 2020, 11:12 PM , By : Xinh Xinh
Templated operator[]... possible? Useful?
I think the issue was by ths following , Could you have: , You can also do
TAG :cpp
Date : October 16 2020, 11:12 AM , By : Amaan
Retrieving a resource file from an exe
around this issue So you have a binary file embedded as a resource in an EXE, and you want to read the file?Try something like this (very rough, look up functions on MSDN for proper parameters):
TAG :cpp
Date : October 16 2020, 11:12 AM , By : user3851606
sorting vectors based on size()
it fixes the issue i have a 2-d vector like vector < vector < coordinates > > v( points); where coordinates class is: , 1) make a function that compares two vectors based on size:
TAG :cpp
Date : October 16 2020, 11:12 AM , By : pwelo
c++ figuring out memory layout of members programmatically
I hope this helps . You need to research "serialization". There is a library, Boost Serialization, that people have been recommending.FWIW, I recommend against using fwrite or std::ostream::write on classes, structures and unions. The compiler is all
TAG :cpp
Date : October 15 2020, 11:12 PM , By : user3851784
Setting the precision for stringstream globally
should help you out Probably the easiest way to do this is to replace your use of stringstream throughout your program with your own class that inherits from stringstream:
TAG :cpp
Date : October 15 2020, 11:12 PM , By : user3851723
Is it possible for a process to catch an unhandled exception of another process on windows?
may help you . Native (AKA standard) C++ has no real concept of multiple processes, and has no means of catching exceptions thrown across process boundaries. And no means of throwing exceptions across such boundaries, come to that.
TAG :cpp
Date : October 15 2020, 11:12 AM , By : user3851933
Type casting in c++
hope this fix your issue Not all objects. Every object in C++ has a type. That type of an object defines whether a cast to int exists, and if so, what algorithm is used.
TAG :cpp
Date : October 15 2020, 11:12 AM , By : user3851923
How to convert a Gstreamer program to stream video via udp into a Qt program?
To fix this issue http://cgit.freedesktop.org/gstreamer/qt-gstreamer/
TAG :cpp
Date : October 15 2020, 11:12 AM , By : user3851880
Disabling bounds checking for c++ vectors
like below fixes the issue If you really want to do it (at least for a quick and dirty profiling comparison), this will work if you have no other at()s
TAG :cpp
Date : October 15 2020, 11:12 AM , By : Harvey Shi
In what state should my overridden >> operator leave my object when the input stream contains invalid data?
this will help Say I have overridden the >> operator for a class like below: , The way that most code that performs stream I/O is written is:
TAG :cpp
Date : October 15 2020, 01:20 AM , By : user3852036
Help understanding part of this generated assembly code
I wish this help you cmpl $0x0,-0x4(%esp); setg %al means compare -0x4(%esp) (floop_id in your code) against 0, and set %al to 1 if it's greater, or 0 otherwise.test %al, %al here isn't doing anything. I don't know why it's in the assembly. (Normally
TAG :cpp
Date : October 15 2020, 01:20 AM , By : ivester
c++: getting ascii value of a wide char
wish help you to fix your issue You're contradicting yourself. International characters like ä are (by definition) not in the ASCII character set, so they don't have an "ascii value".It depends on the exact encoding of your two-character array, if yo
TAG :cpp
Date : October 15 2020, 01:20 AM , By : Kynic0
Do pthread mutexes work across threads if in shared memory?
may help you . You need to tell the mutex to be process-shared when it's inited:http://www.opengroup.org/onlinepubs/007908775/xsh/pthread_mutexattr_setpshared.html
TAG :cpp
Date : October 15 2020, 01:20 AM , By : 對沒錯
What C++ book talks about recommended ways of organizing big projects?
This might help you "Large-Scale C++ Software Design" by John Lakos worked great for me years ago on how to organise code in large projects.On testing, this is not my area, and I cannot recommend a great book. What I can do is discourage you from get
TAG :cpp
Date : October 15 2020, 01:19 AM , By : Vishak Balasubramani
Searching and Inserting in a map with 3 elements in C++
I wish this help you A map can only map one key type to one data type. If the data contains 2 elements, use a struct or a std::pair.
TAG :cpp
Date : October 15 2020, 01:19 AM , By : user3852248
Signedness of char and Unicode in C++0x
To fix the issue you can do char will be the type used for UTF-8 because it's redefined to be sure it can be used with it:
TAG :cpp
Date : October 15 2020, 01:19 AM , By : user3852207
Difference between i++ and ++i in a for loop
Any of those help Nothing at all. The increment is a lone statement, so whether it is pre-incremented or post-incremented doesn't matter.
TAG :cpp
Date : October 15 2020, 01:19 AM , By : melake
Set an exe icon for my program
wish helps you Ben had a good start to the question along with the help of Tymek, but you need to go to the next step. Once you have added your icon to your resources, you will also need a resource file .rc in order to set the icon as the main icon o
TAG :cpp
Date : October 15 2020, 01:19 AM , By : parthasarathi ray
Policy-based template design: How to access certain policies of the class?
wish of those help What you have is not exactly policy-based design IMO... if it were, your class should've actually implemented (i.e. extended) the policies.Now, back to your question/example. In your container, you store a "DishBase*". Right? From
TAG :cpp
Date : October 15 2020, 01:18 AM , By : Siddharth Manu
Pointer incrementing query
it helps some times It is really a problem with the whole idea. You can't meaningfully use a pointer to "jump" from one variable to another by incrementing and decrementing it. It is a weird, ugly and meaningless hack, for which the language gives yo
TAG :cpp
Date : October 15 2020, 01:18 AM , By : user3852460
c++ function overload resolution regarding templated type and class hierarchy
hop of those help? All things being equal, overload resolution prefers nontemplate functions to function templates. However, in this case, all things are not equal. To match your overload for Base*, a derived-to-base pointer conversion is necessary;
TAG :cpp
Date : October 15 2020, 01:18 AM , By : Kunal Khairnar
Virtual Classes Segmentation Faults
hop of those help? gfx points to an object in stack. Are you sure that the object is still there (at the same position where it was) when you are trying to draw?
TAG :cpp
Date : October 15 2020, 01:18 AM , By : Dhurai
c++ use of winmain()
hop of those help? main() is as arbitrary an entry point as WinMain() is. The standard only requires a function named main for consistency. The entry point (whether it's main or WinMain) is actually called by a hidden function that is the real entry
TAG :cpp
Date : October 14 2020, 11:12 PM , By : Ewelina
How to convert a double to a string without using the CRT
should help you out Given that you state your question has no practical application, I figure you're trying to learn about floating point number representations.Thus, if you're looking for a solution without using any library support, start with the
TAG :cpp
Date : October 14 2020, 11:12 PM , By : Kjetil Tenold
Bit packing of array of integers
may help you . I agree with keraba that you need to use something like Huffman coding or perhaps the Lempel-Ziv-Welch algorithm. The problem with bit-packing the way you are talking about is that you have two options: Pick a constant n such that the
TAG :cpp
Date : October 14 2020, 11:12 PM , By : dkd
How to design a class appropriate for millions of allocations?
it helps some times I don't think there's much to say about designing your class for millions of allocations. Yes, there's the obvious memory limit, so if you have a fix amount of memory this might be a real concern for you, otherwise you will always
TAG :cpp
Date : October 14 2020, 11:12 PM , By : SardaFilm
Trying to do this homework assignment but I keep getting a compilation error
Hope this helps Declare "j" outside the "for" loop. When you declare it inside the loop header, it's local to the loop's block and not visible outside it.
TAG :cpp
Date : October 14 2020, 11:12 PM , By : user3852534
Compile errors when trying to use list in C++
wish helps you I'm trying to use list in c++, but I get the following error: , Just some general comments...
TAG :cpp
Date : October 14 2020, 11:12 PM , By : Rukma Nirai
Learning the C++ Standard library - a good idea?
I think the issue was by ths following , You can't really be said to be a C++ programmer without a good knowledge of the standard library. And writing your own is a very bad idea. I strongly recommend you get a copy of Nicolai Josuttis's book and emb
TAG :cpp
Date : October 14 2020, 11:12 PM , By : cowcow

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