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c++ Programming Glossary: byteWhy 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 perform best when fundamental data types are stored at byte addresses that are multiples of their sizes. Here's an example.. typical settings for an x86 processor struct X short s 2 bytes 2 padding bytes int i 4 bytes char c 1 byte 3 padding bytes.. for an x86 processor struct X short s 2 bytes 2 padding bytes int i 4 bytes char c 1 byte 3 padding bytes struct Y int i..
When and why will an OS initialise memory to 0xCD, 0xDD, etc. on malloc/free/new/delete? http://stackoverflow.com/questions/370195/when-and-why-will-an-os-initialise-memory-to-0xcd-0xdd-etc-on-malloc-free-new variables are automatically assigned to this value at byte level . the following magic values are done by the OS not the.. finding bugs assuming a cleared lower bit. Large numbers byte values at least are less typical and are good at finding bad.. has been changed from 0xBD to 0xED to ensure that 4 bytes of that 0xEDEDEDED would give an inaccessible address under..
http://stackoverflow.com/questions/402283/stdwstring-vs-stdstring wchar_t char is supposed to hold a character usually a 1 byte character. wchar_t is supposed to hold a wide character and.. and then things get tricky On Linux a wchar_t is 4 bytes while on Windows it's 2 bytes what about Unicode then The problem.. On Linux a wchar_t is 4 bytes while on Windows it's 2 bytes what about Unicode then The problem is that neither char nor..
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 for various types of runtimes and languages like 8 or 12 bytes. It is imperative that whatever values are stored in this area.. just a number. If you think of memory as a big array of bytes the very first byte has the address 0 the next one the address.. you think of memory as a big array of bytes the very first byte has the address 0 the next one the address 1 and so on upwards...
http://stackoverflow.com/questions/589575/size-of-int-long-etc 2008 on a 32 bit architecture. Here is what I get char 1 byte short 2 bytes int 4 bytes long 4 bytes float 4 bytes double.. bit architecture. Here is what I get char 1 byte short 2 bytes int 4 bytes long 4 bytes float 4 bytes double 8 bytes I tried.. Here is what I get char 1 byte short 2 bytes int 4 bytes long 4 bytes float 4 bytes double 8 bytes I tried to find without..
WChars, Encodings, Standards and Portability http://stackoverflow.com/questions/6300804/wchars-encodings-standards-and-portability there does not appear to be support for any sensible multi byte console encoding and mbstowcs is essentially useless other than.. null terminated string as a file name. Most systems take byte strings but Windows NTFS takes 16 bit strings. You have to take..
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 sort of long lived storage area where the lifetime of each byte in the storage that is the period of time when it is validly.. of short lived storage area where the lifetime of each byte in the storage is well known and in particular lifetimes of.. a pointer to the middle of some entirely valid million byte memory block. In our analogy you check out of the hotel when..
What is the difference between _tmain() and main() in C++? http://stackoverflow.com/questions/895827/what-is-the-difference-between-tmain-and-main-in-c it easier to switch between Unicode UTF 16 and their multibyte character set they've defined _tmain which if Unicode is enabled.. all the ASCII characters are represented as the pair of bytes 0 followed by the ASCII value. And since the x86 CPU is little.. And since the x86 CPU is little endian the order of these bytes are swapped so that the ASCII value comes first then followed..
Win32 API to enumerate dll export functions? http://stackoverflow.com/questions/1128150/win32-api-to-enumerate-dll-export-functions lib e_magic IMAGE_DOS_SIGNATURE PIMAGE_NT_HEADERS header BYTE lib PIMAGE_DOS_HEADER lib e_lfanew assert header Signature IMAGE_NT_SIGNATURE.. 0 PIMAGE_EXPORT_DIRECTORY exports BYTE lib header OptionalHeader.DataDirectory IMAGE_DIRECTORY_ENTRY_EXPORT.. IMAGE_DIRECTORY_ENTRY_EXPORT .VirtualAddress PVOID names BYTE lib exports AddressOfNames for int i 0 i exports NumberOfNames..
Hooking DirectX EndScene from an injected DLL http://stackoverflow.com/questions/1994676/hooking-directx-endscene-from-an-injected-dll 26 typedef HRESULT IDirect3DDevice9 EndSceneFunc void BYTE pVtable reinterpret_cast void pTempDev EndSceneFunc pVtable..
Writing BMP image in pure c/c++ without other libraries http://stackoverflow.com/questions/2654480/writing-bmp-image-in-pure-c-c-without-other-libraries bmfh BITMAPINFOHEADER bmih RGBQUAD aColors BYTE aBitmapBits ... see the file format for more details share..
how to get vendor id and product id of a plugged usb device on windows http://stackoverflow.com/questions/2935184/how-to-get-vendor-id-and-product-id-of-a-plugged-usb-device-on-windows Interface_Info Interface_Info.cbSize sizeof Interface_Info BYTE Buf 1024 DWORD i DWORD InterfaceNumber 0 PSP_DEVICE_INTERFACE_DETAIL_DATA.. hInfo DeviceInfoData SPDRP_DEVICEDESC DataT PBYTE buffer buffersize buffersize if GetLastError ERROR_INSUFFICIENT_BUFFER..
http://stackoverflow.com/questions/295027/array-of-zero-length Any advice in refactoring those struct someData int nData BYTE byData 0 NB It's C Windows XP VS 2003 c visual studio arrays.. struct someData malloc sizeof struct someData size sizeof BYTE if result result nData size return result Now you have an object..
How do I read from a version resource in Visual C++ http://stackoverflow.com/questions/316626/how-do-i-read-from-a-version-resource-in-visual-c failed with error d n GetLastError return false std vector BYTE data dwSize load the version info if GetFileVersionInfo szFilename..
How to get the version information of a DLL file in C++ http://stackoverflow.com/questions/420185/how-to-get-the-version-information-of-a-dll-file-in-c DWORD handle 0 size GetFileVersionInfoSize fileName handle BYTE versionInfo new BYTE size if GetFileVersionInfo fileName handle.. fileName handle BYTE versionInfo new BYTE size if GetFileVersionInfo fileName handle size versionInfo..
How can adding code to a loop make it faster? http://stackoverflow.com/questions/688325/how-can-adding-code-to-a-loop-make-it-faster ebp test edx edx jg SHORT L4458 177 pDestination 0 mov BYTE PTR ecx 0 178 else if iScaled PRECISION3 jmp SHORT L4461 L4458.. edx 4096 00001000H jl SHORT L4460 179 pDestination 255 mov BYTE PTR ecx 255 000000ffH 180 else jmp SHORT L4461 L4460 181 182.. iScaled 183 pDestination unsigned char iSRGB mov dl BYTE PTR _FloatToSRGBTable3 edx mov BYTE PTR ecx dl L4461 184 185..
How can I detect only deleted, changed, and created files on a volume? http://stackoverflow.com/questions/7421440/how-can-i-detect-only-deleted-changed-and-created-files-on-a-volume u n DWORD record FileNameLength filename WCHAR BYTE record record FileNameOffset filenameend WCHAR BYTE record record.. WCHAR BYTE record record FileNameOffset filenameend WCHAR BYTE record record FileNameOffset record FileNameLength printf FileName.. record WCHAR filename WCHAR filenameend filename WCHAR BYTE record record FileNameOffset filenameend WCHAR BYTE record record..
TCP socket Transfer data from PC to android device (Android NDK) http://stackoverflow.com/questions/11872405/tcp-socket-transfer-data-from-pc-to-android-device-android-ndk sockaddr_in struct s_addr and sin_port are in Network Byte Order Big Endian Since Intel CPUs use Host Byte Order Little.. in Network Byte Order Big Endian Since Intel CPUs use Host Byte Order Little Endian conversion is necessary e.g. htons and htonl..
http://stackoverflow.com/questions/1194479/write-your-own-memory-manager
How to Convert Byte* to std::string in C++? http://stackoverflow.com/questions/1673445/how-to-convert-byte-to-stdstring-in-c to Convert Byte to std string in C I have Byte want to convert it to std string.. to Convert Byte to std string in C I have Byte want to convert it to std string . Can you please tell me the..
How well is unicode supported in C++11? http://stackoverflow.com/questions/17103925/how-well-is-unicode-supported-in-c11 which the standard calls a wide string and a byte string. Byte strings are always strings of char . The encodings to convert..
http://stackoverflow.com/questions/2867758/how-to-generate-a-long-guid abcdefghijkmnopqrstuvwxyzABCDEFGHJKLMNOPQRSTUVWXYZ23456789 Byte randomBytes new Byte PasswordLength RNGCryptoServiceProvider.. Byte randomBytes new Byte PasswordLength RNGCryptoServiceProvider rng new RNGCryptoServiceProvider.. Byte randomBytes new Byte PasswordLength RNGCryptoServiceProvider rng new RNGCryptoServiceProvider..
Problem to Decode H264 video over RTP with ffmpeg (libavcodec) http://stackoverflow.com/questions/3493742/problem-to-decode-h264-video-over-rtp-with-ffmpeg-libavcodec z sizeof start_sequence rtpReceive 16 size 16 ConsumedBytes avcodec_decode_video codecContext pFrame GotPicture uint8_t.. z size 16 sizeof start_sequence delete z Result ConsumedBytes 0 and GotPicture 0 often SPS and PPS identical code. Result.. 0 often SPS and PPS identical code. Result ConsumedBytes 0 and GotPicture 0 It's normal I think When I find a new couple..
Serial Comm using WriteFile/ReadFile http://stackoverflow.com/questions/6036716/serial-comm-using-writefile-readfile int length 0 DCB config 0 bool abContinue true DWORD dwBytesWritten DWORD dwBytesRead int isRead false HANDLE m_hCommPort.. config 0 bool abContinue true DWORD dwBytesWritten DWORD dwBytesRead int isRead false HANDLE m_hCommPort CreateFile L COM2 GENERIC_READ.. ONESTOPBIT config.Parity PARITY_NONE config.ByteSize DATABITS_8 config.fDtrControl 0 config.fRtsControl 0 if..
how to convert from string to byte[] [duplicate] http://stackoverflow.com/questions/6041381/how-to-convert-from-string-to-byte the following code string s 2563MNBJP89256666666685755854 Byte bytes encoding.GetBytes s string hex foreach byte b in bytes.. s 2563MNBJP89256666666685755854 Byte bytes encoding.GetBytes s string hex foreach byte b in bytes int c b hex String.Format..
http://stackoverflow.com/questions/621535/what-are-data-breakpoints to break when the contents of variable foo change. In the Byte Count box enter the number of bytes you want the debugger to..
Convert Byte Array into Bitset http://stackoverflow.com/questions/708114/convert-byte-array-into-bitset Byte Array into Bitset I have a byte array generated by a random.. expect. I'm rusty in C . std bitset bytesToBitset int numBytes byte data std bitset numBytes CHAR_BIT b for int i 0 i numBytes.. bitset bytesToBitset int numBytes byte data std bitset numBytes CHAR_BIT b for int i 0 i numBytes i byte cur data i int offset..
Efficient way of storing Huffman tree http://stackoverflow.com/questions/759707/efficient-way-of-storing-huffman-tree writer if node.IsLeafNode writer.WriteBit 1 writer.WriteByte node.Value else writer.WriteBit 0 EncodeNode node.LeftChild.. reader if reader.ReadBit 1 return new Node reader.ReadByte null null else Node leftChild ReadNode reader Node rightChild.. etc. Node implementation public class Node public Byte Value public Node LeftChild public Node RightChild public Node..
Compile lua code, store bytecode then load and execute it http://stackoverflow.com/questions/8936369/compile-lua-code-store-bytecode-then-load-and-execute-it function expects a NULL terminated string which is bad. Byte code can have embedded NULL characters in it which would screw..
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