execution | 易学教程

How to track the execution process of ruby program

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问题 I am new to ruby and I want to track the execution process of ruby program when I feel confused about some programs. I wonder whether there is a way to help me track just as shell scripts set -x do? PS: Such as shell script test.sh: set -x ls /home echo "hello dujun and haotianma!" when I execute test.sh, then the output will be like: + ls /home dujun haotianma + echo 'hello dujun and haotianma!' hello dujun and haotianma! Just as how this bash script echos each statement before executing it,

Does php execution stop after a user leaves the page?

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I want to run a relatively time consuming script based on some form input, but I'd rather not resort to cron, so I'm wondering if a php page requested through ajax will continue to execute until completion or if it will halt if the user leaves the page. It doesn't actually output to the browser until a json_encode at the end of the file, so would everything before that still execute? It depends. From http://us3.php.net/manual/en/features.connection-handling.php : When a PHP script is running normally the NORMAL state, is active. If the remote client disconnects the ABORTED state flag is turned

Can I pass an argument to a VBScript (vbs file launched with cscript)?

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I have this script saved in "test.vbs": Set FSO = CreateObject("Scripting.FileSystemObject") Set File = FSO.OpenTextFile(workFolder &"\test.txt", 2, True) File.Write "testing" File.Close Set File = Nothing Set FSO = Nothing Set workFolder = Nothing When I run the script I want to pass the value of the "workFolder" variable. How can I do this? Can I do it? Something like "cscript test.vbs workFolder:'C:\temp\'" perhaps? Bonus question: Is it neccessary to clean up the passed variable with "Set workFolder = Nothing" or does VBSCript do that automatically when it terminates? Maybe "Set File =

WPF Image Dynamically changing Image source during runtime

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问题 I have a window with a title on it. When the user selects a choice from a drop down list, the title image can change. The problem is when the image loads, it's a blurred, stretched, and pixelated. These are PNG files I'm working with and they look good prior to setting the source dynamically. Here's the code I'm using to change the image's source. string strUri2 = String.Format(@"pack://application:,,,/MyAssembly;component/resources/main titles/{0}", CurrenSelection.TitleImage); Stream

Adding delay between execution of two following lines

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问题 I need to add delay between the execution of two lines in a(same) function. Is there is any favorable options to do this? Note: I don't need two different functions to do this, and the delay must not affect other functions' execution. eg: line 1: [executing first operation]; line 2: Delay /* I need to introduce delay here */ line 3: [executing second operation]; Any help is appreciable. Thanks in advance... 回答1: You can use gcd to do this without having to create another method double

Timing the CPU time of a python program?

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问题 I would like to time a snippet of my code, and I would like just the CPU execution time (ignoring operating system processes etc). I've tried time.clock(), it appears too imprecise, and gives a different answer each time. (In theory surely if I run it again for the same code snippet it should return the same value??) I've played with timeit for about an hour. Essentially what kills it for me is the "setup" process, I end up having to import around 20 functions which is impractical as I'm

Stop SQL query execution from .net Code

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I'm executing one stored procedure from the '.net' code. Since there is a lot of data, it is taking too much time to execute. Is there any way to stop this execution from the c# code? In other words, if we execute the query from database itself, there is a option to stop its execution but in the code is it possible? Yes sqlcommand.cancel is your friend http://msdn.microsoft.com/en-us/library/system.data.sqlclient.sqlcommand.cancel.aspx Yes, you can cancel the query by using SqlCommand.Cancel . However, the command must be running in another thread (otherwise Cancel will be called only after

Limit execution time of an function or command PHP

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Hi is there a possibility to set time limit only to a command or only to a function eg: function doSomething() { //..code here.. function1(); //.. some code here.. } I want to set time limit only to function1. There exits set_time_limit but I think this sets the time limit to whole script. Anybody any Idea? set_time_limit() does run globally, but it can be reset locally. Set the number of seconds a script is allowed to run. If this is reached, the script returns a fatal error. The default limit is 30 seconds or, if it exists, the max_execution_time value defined in the php.ini. When called,

C# -Four Patterns in Asynchronous execution

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问题 I heard that there are four patterns in asynchronous execution. There are four patterns in async delegate execution: Polling, Waiting for Completion, Completion Notification, and "Fire and Forget" When I have the following code : class AsynchronousDemo { public static int numberofFeets = 0; public delegate long StatisticalData(); static void Main() { StatisticalData data = ClimbSmallHill; IAsyncResult ar = data.BeginInvoke(null, null); while (!ar.IsCompleted) { Console.WriteLine("...Climbing

Difference between Run() and ShellExecute()

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问题 I want to execute something in a shell/terminal on Windows via AutoIt. And I know that there are two ways of doing it. For example: Run(@ComSpec & " /c " & $myCommand, "", @SW_HIDE) ;and ShellExecute($myCommand) I don't understand the difference; both functions will do what I want, but what's behind them? Which pros and cons do they have? 回答1: Run() is used to fire off executable files only. It requires the full path of the program. ShellExecute() also accepts content files like .txt, .htm