command

问题 I'm trying to refactor an undo/redo implementation I have but am unsure how to go about it. public class MyObject { public int A; public int B; public int C; } public abstract class UndoRedoAction { protected MyObject myobj; protected int oldValue; protected int newValue; public abstract void Undo(); public abstract void Redo(); } public class UndoRedoActionA : UndoRedoAction { UndoRedoActionA(MyObject obj, int new) { myobj = obj; oldValue = myobj.A; newValue = new; myobj.A = newValue; }

问题 I'm working on a ServiceStack project that requires me to gather a list of commands, of which I have over 200, and create a operation and service for each of them. Essentially I am making a Commanding API which will allow users to send commands without using the UI (exposing my commands). A simplistic example of what I am trying to do: (Application Start) Gather all commands (with some exemptions) for each command make an operation and service for that command map the commands attributes to

问题 Does anyone has a short list with most used git commands? Not the complete manual, but only what I approximately need daily. I'm new and would like a small list to put under my screen. This to pickup git faster. That's all folks! 回答1: This is what I came up with. I have printed this out, and it helps me getting started with git commands: git init git status git log --summary git add file.txt git add '*.txt' : add all files, also in subfolders git rm file.txt : remove file git rm -r foldername

问题 I'm using django-haystack for searching on my site. I'm also using django multilingual model for I18n. I import MultilingualModel in search_indexes.py I ca run all manangement commands as long as I don't have haystack in the INSTALLED_APPS. When haystack is in the INSTALLED_APPS and try to run syncdb or migrate (and several other management commands) I'm always getting: django.core.exceptions.ImproperlyConfigured: ImportError haystack: cannot import name MultilingualModel 回答1: This is likely

问题 I'm making an application in C#, based on Delphi (converting code), but I found a command that I do not recognize (shl), and i want to know if there is any equivalent to C#. Thanks in advance. 回答1: Shl is left shift. Use << C# operator for the same effect. Example: uint value = 15; // 00001111 uint doubled = value << 1; // Result = 00011110 = 30 uint shiftFour = value << 4; // Result = 11110000 = 240 回答2: From Shl Keyword this is a bitwise shift left which from C# Bitwise Shift Operators

问题 Trying to run FFmpeg command using executable file stored in Raw folder eclipse for android app. I am getting permission denied error and not able to resize video. How can i give right permissions from my java file. 回答1: put this code in a static class or wherever you want: public static void installBinaryFromRaw(Context context, int resId, File file) { final InputStream rawStream = context.getResources().openRawResource(resId); final OutputStream binStream = getFileOutputStream(file); if

问题 I have to write a program that will perform the same operation that du | sort | head in the command line would do, but I'm stuck, and my program is not working. The output right now is 112 . and the program doesn't terminate. Please help, I don't know what to do! int main(void) { int fd[2]; int fd1[2]; int pid; if (pipe(fd) == -1) { perror("Pipe"); exit(1); } switch (fork()) { case -1: perror("Fork"); exit(2); case 0: dup2(fd[1], STDOUT_FILENO); close(fd[0]); close(fd[1]); execl("/usr/bin/du"

问题 This command is actually a solution for this question about mongodb issue. But the ichiness of not knowing what exactly it is doing, command by command, is really drive me nut! If anyone could dissect what this line does to... the /data/db directory, or even any other directory! Will be really appreciated (also those who like me, very noobie in command line) Thanks! 回答1: The main command is chown, which itself change the owner of the files. -R means Recursively, means, its applied to every

问题 Is there any unix commands that can display duplicate files in a particular directory .kindly let me know your comments. 回答1: You should be able to use fdupes to achieve this. fdupes ./directory That should list all the duplicate files in a directory, you can also pass it -r for a recursive scan into subdirectories. 来源： https://stackoverflow.com/questions/5321509/list-duplicate-files-in-a-directory-in-unix

问题 Premise: It is recommended that in CQRS+DDD+ES style applications use task based screens, these screens guide the user and capture intent. These task screens can also be referred to as Inductive User Interface . Some examples of UI design guidelines that can help you create mondern, user-friendly apps: Microsoft Inductive User Interface Guidelines and, Index of UX guidelines The way I understand it, the tasks , generally speaking, should line up with Commands or Functions waiting on the