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. thenewboston On thenewboston, you can find a free HTML5 video course. This website has a collection of good programming video courses, such as Adobe, Java, and C ++. In computer science, you can find HTML5 programming and get some HTML5, canvas, and video player tutorials, which are free of charge. Online learning HTML5 programming advanced tutorial Through free tutorials, blogs, and videos, we have gained basic and comprehensive HTML5 programming knowledge. It is time to gain an in-depth und

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check whether your input is correct". I think those characters may be nearby, so double-click "registration failed, check whether your input is correct. 00415829 |> 66: C745 A4 D4> mov word ptr ss: [EBP-5C], 0D40036682f |. BA ADEC4900 mov edx, TextDraw.0049ECAD; Registration failed. Please check whether your input is correct00415834 |. 8D45 B8 lea eax, dword ptr ss: [EBP-48] In section 00415829, the "jump from 0000004ed" is displayed in the informat

efficiency, should be converted to assembly, the intermediate results into a separate register40.//Thanks to Menzi11 's article, let me realize that the relevant data in the program will make the CPU can not disorderly execution.41.//Here is replaced by pseudo assemblerTYPE S4 = 0;43.Register TYPE r1 = 0;Register TYPE r2 = 0;for (int i = 0; i R1 + + + a[i++];R2 + = a[i++];49.}50.Wuyi Cout52.} Several of the above versions are reasonable, but these optimizations are based on the assumption that

The test software is Splish.exe.Bytes ------------------------------------------------------------------------------------------I am sure everyone knows the beginning of searching for an algorithm. I will not talk about it here. Next I will directly discuss the assembly code and comments of the algorithm.Bytes ------------------------------------------------------------------------------------------------004015E4 55 push ebp; algorithm started004015E5 8BEC mov ebp, ESP004015E7 6A 20 PUSH 2000401

dummy1, int dummy2){_ ASM {Push EBPMoV EBP, ESPMoV eax, 152Lea edX, 8 [EBP]Int 0x2ePop EBPRET 9}} It turns out that the user space also has an ntreadfile (), which is executing the self-trapping command "int 0x2e ". Let's take a look at this Assembly Code. Here, 152 is the call number of the System Call ntreadfile (), so when the CPU falls into the system space, the register eax holds the specific system call number. The register

connect them during compilation?In this case, we can conclude that there is another secret. For more information, see ntreadfile () in msvc6/iface/native/syscall/debug/ZW. C: _ Declspec (naked) _ stdcallNtreadfile (INT dummy0, int dummy1, int dummy2){_ ASM {Push EBPMoV EBP, ESPMoV eax, 152Lea edX, 8 [EBP]Int 0x2ePop EBPRET 9}} It turns out that the user space also has an ntreadfile (), which is executing the self-trapping command "int 0x2e ". Let's t

In many network development scenarios, memory conversion is often encountered in the following scenarios: #define PACKAGE_PARSE_ERROR -1#define PACKAGE_PARSE_OK 0int parse_package( int* a, int* b, int* c, int* d, char* buf, int buf_len ){ if( !buf || buf_len This is a call in the Process of network unpacking, and the packet process is a reverse process. An application like this can be replaced by an integer forced conversion, and the efficiency will be at least doubled. To illustrate t

Reading Tips: 《Delphi Image ProcessingThe series focuses on efficiency. The general code is Pascal, and the core code is BaSm. 《C ++ Image ProcessingThe series focuses on code clarity and readability, and all uses C ++ code. Make sure that the two items are consistent and can be compared with each other. The code in this article must include the imagedata. Pas unit in "Delphi Image Processing-data type and public process. The minimum value processing of an image is centered on the current pixel

edi.data:0040605f 8B mov ecx, [eax].data:00406061 8B mov EDX, [eax+4];. data:00406061;; Save String "Createfi". data:00406064 C7 FC xx 00+ mov [ebp+processor_architecture], 0.data:0040606b 4D F8 mov [Ebp+szcrea], ecx.data:0040606e, MOV [Ebp+sztefi], edx.data:00406071 64 A1 xx eax, large Fs:30h; Get _peb.data:00406077 8B 0C mov eax, [eax+0ch]; Get ldr_peb_ldr_data.data:0040607a 8B 1C mov esi, [eax+1ch]; Get

],al004113EE mov dword ptr [EBP-2CH],0FFFFFFFFH004113F5 Push offset string "Masefee" (415804h)004113FA Lea EAX,[EBP-20H]004113FD push EAX004113FE call @ILT +160 (_strcpy) (4110a5h)00411403 Add esp,800411406 push edx00411407 mov ecx,ebp00411409 push EAX0041140A Lea edx,[(411438h)]00411410 call @ILT +130 (@_rtc_checkstackvars@8) (411087h)00411415 pop eax00411416 pop edx00411417 Pop EDI00411418 pop ESI00411419 pop ebx0041141A mov ecx,dword ptr [ebp-4]004

other than esp. The scaling factor can be 1, 2, 4, or 8. The offset is an immediate number. For example, [ebp+edx*8+200] is a valid, valid address expression. Of course, in most cases you don't need to be so complicated, the address, scaling factor, and offset do not necessarily appear. The base unit of memory is bytes (byte). Each byte is 8 bits, so the maximum number of energy-saving expressions per word is 11111111, or 255 of the decimal. In gene

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de facto standard? In other words, thefuck is not very tall. _ (: 3 "outputs) _ list of excellent Python projects (awesome-python) Vinta/awesome-python · GitHub Pycrumbs/pycrumbs. md at master · kirang89/pycrumbs · GitHub Svaksha/pythonidae · GitHub Checkcheckzz/python-github-projects · GitHub Rasbt/python_reference · GitHub Easy-Python And awesome-* Series Bayandin/awesome-awesomeness · GitHub Sqlmap! Goagent! By the way, there are also shadowsocks! Open

Tools:VC 7.0BCB 6.0Compilation options: Maximum Speed Optimization (VC 7.0 turns off the automatic inline function option)Decompilation tool: w32dasm Benchmark Test procedure:Void test (){Int A = 0, B = 1, C = 4;For (INT I = 0; I ++;}} Int main (){_ ASM {MoV edX, EDXNOP};Test ();} Purpose: To test the program's ability to optimize useless functions. Because test does not return any value or modify any external variables,Therefore, for programs, this i

: 77F061F8 _ NtQuerySystemInformation @ 16 In ntdll, the two functions of zw and nt are actually the same subject: . Text: 77F061F8 mov eax, 105 h; NtQuerySystemInformation . Text: 77F061F8; RtlGetNativeSystemInformation . Text: 77F061FD mov edx, 7FFE0300h . Text: 77F06202 call dword ptr [edx] . Text: 77F06204 retn 10 h Then compare the image: Check whether the Mode is usermode or kernelmode. Ntdll. the

Core tips: This experiment demonstrates that when calling a method in a class, all methods imply a self parameter, and this parameter is passed as the first parameter of the object method... First, create an empty form and put a button.The following two methods are declared under implementation: // The external method declares only one parameter. In this case, the standard Object internal event Method tpolicyevent is declared. In this declaration, the sender corresponds to the object pointer

Traceback (most recent):File "manage.py", line all, in startup = Importlib.import_module (Edx_args.startup)File "/usr/lib/python2.7/importlib/__init__.py", line Notoginseng, in Import_module__IMPORT__ (name)File "/edx/app/edxapp/edx-platform/cms/startup.py", line 7, Settings. Installed_apps # pylint:disable=w0104File "/edx/app/edxapp/venvs/edxapp/local/lib/python