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  • Javascript tail recursion

    - by Misha Moroshko
    Why the following code runs so.... slow....... ? <html><body><script type="text/javascript"> var i = 0; f(); function f() { if (i == 5000) { document.write("Done"); } else { i++; tail(); } } function tail() { var fn = tail.caller; var args = arguments; setTimeout(function() {fn.apply(this, args)}, 0); }; </script></body></html>

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  • Execuitng script in threads

    - by Pedro Magalhaes
    Hi. I wanna make an app that executes remote scripts. I am going to design it like a Windows Service that listen on tcp/ip port. Every new request I will execute a python scripts. So I can handle any number of tcp/ip request at same time, so I will need to execute python script in separate threads. How can I do that? Is that simple? The script will share some objects, like Log files(text files) and other modules. In the log file example every script will write in the same file. So the app (windows service) will be responsible for do that. I need to make this objects thread safe, right?

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  • [wxWidgets] How to store wxImage into database, using C++?

    - by Thomas Matthews
    I have some wxImages and I would like to store them into a BLOB (Binary Large OBject) field in a MySQL database. There are no methods in wxImage nor wxBitmap for obtaining the binary data as an array of unsigned char so I can load into the database. My current workaround is to write the image to a temporary file, then load the BLOB field directly from the file. Is there a more efficient method to load and store a wxImage object into a MySQL BLOB field? I am using MySql C++ connector 1.05, MS Visual Studio 2008, wxWidgets and C++.

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  • Why does eclipse break when the .project file is hidden?

    - by Tommy
    Why does eclipse break with the error "Could not write file: M:\workspaces\eclipse\project.project. M:\workspaces\eclipse\project.project (Access is denied)" when the .project file is hidden (on the Windows file system)? Note: This happens w/ other files as well. Steps to Reproduce: 1. Install the latest eclipse, I am using eclipse-jee-galileo-SR2-win32.zip. (Not sure if it happens in other versions) 2. Create a project. 3. Browse to the project in windows explorer, find the .project file. 4. Right click - properties 5. Under Attributes check hidden. 6. In eclipse, open the .project file, make a change and try to save. 7. After you get the error, uncheck the hidden box and save again.

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  • How do I host a Google gadget? How does it work?

    - by sintaloo
    I just spent 5 hours by checking Google gadgets websites and FAQs, but I still have no idea how to host a gadget. What I've figured from reading the Google documentation: I can write gadgets with XML, JavaScript etc.. Gadgets can be added to iGoogle etc.. Google can host the gadgets for you. Gadgets can be hosted anywhere else??? All of the above information doesn't answer my question. For instance, with jQuery or Dojo Toolkit, I can download the JavaScript framework and use it. With Google gadgets, I can not find a download link for a framework. Why? Does Google provide its framework? If not, why does the documentation indicate that gadgets can be hosted anywhere? I am totally confused. A brief explanation or some helpful links are very welcome! Thanks a lot!!!

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  • Missing backslashes in filename using C#

    - by CL4NCY
    Hi, I have a string literal as follows: string filename = @"C:\myfolder\myfile.jpg"; When I use File.Exists(filename) it works most of the time but sometimes I get an error saying the following file doesn't exist: C:myfoldermyfile.jpg Something seems to strip the backslashes out of the filename. This code is sometimes accessed via an ajax request. Does anyone know why/how this could be happening? Edit: Here is a more detailed version of the code. public class Feeds { public static string ftpDir = @"C:\website\Feeds\"; } public class Feed { public static void run(string name) { if (!Directory.Exists(Feeds.ftpDir + name)){ Response.Write("Feed doesn't exist '" + Feeds.ftpDir + name + "'"); return; } //run feed... } }

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  • How to use correctly the Query Window in SQL Server 2008

    - by Richard77
    Hello, What should I do to avoid that commands be executed each time I hit 'Execute !. icon' I mean this USE master; GO CREATE DATABASE Sales GO USE Sales; GO CREATE TABLE Customers( CustomerID int NOT NULL, LName varchar (50) NOT NULL, FName varchar (50) NULL, Status varchar (10), ModifiedBy varchar (30) NULL ) GO When I click Execute!, Sql Server tries to redo the same thing. What I do for now is to delete the Query Window completely then write what I need before clicking the Execute icon. But, I doubt that I should be doing that. What can I do to keep writing the commands without having each time to clear the Query Window? Thanks for helping

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  • SQLce Select query problem

    - by DieHard
    Wrote a Truck show Contest voting app, financial etc using sqlite. decided to write backup app for show day using ce 3.5. Created db moved to data directory, created tables configured dgridviews all is well. Entered some test data started management studio 08 ran select query against table and got null returns. Started app from vs studio and found that test data is gone. Re entered data ran query in MS data gone again. If I use VS Studio can start and enter data, close app restart and data is still there, seems only when using outside tool on select query data deletes. I don't know ce that well but this cannot be right. select * from votes = delete * from votes??????????????

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  • Compressing three individual jpeg pics containing temporal redundancy?

    - by michael
    I am interfacing and embedded device with a camera module that returns a single jpeg compressed frame each time I trigger it. I would like to take three successive shots (approx 1 frame per 1/4 second) and further compress the images into a single file. The assumption here is that there is a lot of temporal redundancy, therefore lots of room for more compression across the three frames (compared to sending three separate jpeg images). I will be implementing the solution on an embedded device in C without any libraries and no OS. The camera will be taking pics in an area with very little movement (no visitors or screens in the background, maybe a tree with swaying branches), so I think my assumption about redundancy is pretty solid. When the file is finally viewed on a pc/mac, I don't mind having to write something to extract the three frames (so it can be a nonstandard cluge) So I guess the actual question is: What is the best way to compress these three images together given the fact that they are already in JPEG format (it is a possibly to convert back to a raw image, but if i dont have too...)

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  • adhoc struct/class in C#?

    - by acidzombie24
    Currently i am using reflection with sql. I find if i want to make a specialize query it is easiest to get the results by creating a new class inheriting from another and adding the 2 members/columns for my specialized query. Then due to reflections in the lib in my c# code i can write foreach(var v in list) { v.AnyMember and v.MyExtraMember) Now instead of having the class scattered around or modifying my main DB.cs file can i define a class inside a function? I know i can create an anonymous object by writing new {name=val, name2=...}; but i need a to pass this class in a generic function func(query, args);

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  • http response to GET request - working in FF not Chromium

    - by Tyler
    For fun I'm trying to write a very simple server in C. When I send this response to Firefox it prints out the body "hello, world" but with Chromium it gives me a Error 100 (net::ERR_CONNECTION_CLOSED): Unknown error. This, I believe, is the relevant code: char *response = "HTTP/1.0 200 OK\r\nVary: Accept-Encoding, Accept-Language\r\nConnection: Close\r\nContent-Type: text/plain\r\nContent-Length:20\r\n\r\nhello, world"; if(send(new_fd, response, strlen(response), 0) == strlen(response)) { printf("sent\n"); }; close(new_fd); What am I missing? Thanks!

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  • Where is the default language data stored in OS 10.6

    - by George Baugh
    From a shell in 10.4 or 10.5, I was able to do this: /usr/bin/defaults read NSGlobalDomain AppleLanguages To get the list of the language preference for that particular machine. This was done so that I could restore it back to that list after changing it with the 'defaults write' command to something else (in order to help automate l10n testing). Now, along comes OS 10.6, and AppleLanguages is nowhere in any of our defaults domains. I know that I can alter it for each running application by altering their specific property lists...but at the cost of more complexity. Also, some of the apps I have under test here are installer packages...and It's a real pain to change stuff (like the .plist I'd have to change here) in those without being somewhat destructive; that's why I chose to do it globally in the first place. Anyways, it'd be great if I could find where they stashed it now...or if they deprecated it (like a zillion other things in OS 10.6) completely.

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  • BLL returning the right Type of an instance

    - by Younes
    I have a class "Artikel" and there i write some Business Logic. I also have a class "tArtikel" which is a type. In my class "Artikel" I work with "tArtikel" and returns are of that type. Now when i instantiate an "Artikel" i want it to be of type "tArtikel", so what i tried in my code is: public tArtikel Artikel() { tArtikel artikel = new tArtikel(); } Which results in: "'Artikel' member names cannot be the same as their enclosing type". How would i set this up correctly?

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  • [StructureMap] Xml configuration or Configuration through code?

    - by Amith George
    I personally like the option to configure StructureMap from C# code. From what I understand, one of the advantages of DI, is that we can easily swap in a new concrete instance. But, if the configuration is defined in code, then the concrete instances are hardcoded in the dll. So, practically, its as good as having hard coded the dependencies, right? I know, during testing it makes life easier... My point is, wouldnt it be better to use xml configuration instead? you want to plugin a new concrete instance? simply have your installer overwrite the structuremap.config file with the new one. So, what is the preferred way to configure StructureMap? Extra: Am forced to use C# configuration for the time being because I dont know how to pass the connection string to instance. I can write the connectionstring in the config file, but i would like to reuse the connectionstring defined in app.config.

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  • How to use a c# datagridview to update a database file just like Access does?

    - by mackeyka
    I have googled everywhere and I am finally giving up and asking here. I am working in Visual Studio 2010 with C#. I have set up a form with a datagridview connected to a MSSQL database and I need to save changes made in the datagridview back to the physical database. I am having some success but I think that I am going about some of it completely wrong because I can not get it to save consistently. What I really want is for the updates to work just like they do when working with Access. When I edit a row in the datagridview and then leave that row, either by selecting another row or by selecting some other control on the form or even by changing to another form or quitting the application the row should be automatically pdated to the physical database. The first part of this question I think is, what is the proper event to use to trigger the save and then second what methods should be used to actually write the data to the database?

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  • Java Regex for matching quoted string with escaped quotes

    - by kayahr
    I know there are already many questions like mine but I found no answer which works in Java. So I write a new question. I have text files with content like this: key1 = "This is a \"test\" text with escapes using '\\' characters"; key2 = 'It must work with \'single\' quotes and "double" quotes'; I need a regular expression which matches the values in the double-quotes (or single-quotes). This regular expression must support the escaped quotes and escaped backslashes. The regular expression must work with Java standard Pattern/Matcher classes.

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  • Maximum number of files one ext3 directory while still getting acceptable performance?

    - by knorv
    I have an application writing to an ext3 directory which over time has grown to roughly three million files. Needless to say, reading the file listing of this directory is unbearably slow. I don't blame ext3. The proper solution would have been to let the directory write to sub-directories such as ./a/b/c/abc.ext rather than just ./abc.ext. I'm changing to such a sub-directory structure and my question is simply: roughly how many files should I expect to store in one ext3 directory while still getting acceptable performance? Or in other words; assuming that I need to store three million files in the structure, how many levels deep should the ./a/b/c/abc.ext structure be? Obviously this is a question that cannot be answered exactly, but I'm looking for a ball park estimate.

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  • Powershell - Problem with Start-transcript using remoting

    - by Sanjeev
    I have a file transcript-test.ps1 with below contents $log="TestLog{0:yyyyMMdd-HHmm}" -f (Get-Date) $logfile = 'C:\logs\'+$log+'.txt' Start-transcript -path $logfile -force Echo "To test if this message gets logged" Write-host "To test if this message gets logged" logged" Stop-transcript I try to run the script from lets say "box1" and the log file contains the below contents ********** Windows PowerShell Transcript Start Start time: 20110105114050 Username : domain\user Machine : BOX1 (Microsoft Windows NT 5.2.3790 Service Pack 2) ********** Transcript started, output file is C:\logs\TestLog20110105-1140.txt This should get logged in the log file C:\logs\TestLog20110105-1140.txt ********** Windows PowerShell Transcript End End time: 20110105114050 When I run the same script from another machine using below script I don't see any messages in the log file Invoke-command {powershell.exe -ExecutionPolicy Unrestricted -NoProfile -File C:\in ll\transcript-test.ps1} -computername box1 -credential $credential Contents of log file : ********** Windows PowerShell Transcript Start Start time: 20110105114201 Username : OX\qauser Machine : MODESIGNAU1 (Microsoft Windows NT 5.2.3790 Service Pack 2) ********** Windows PowerShell Transcript End End time: 20110105114201 Is there anyway to log the messages from the script to log file when invoked remotely ? Thanks! Sanjeev

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  • How should I do custom sort in Python 3?

    - by S.Mark
    In Python 2.x, I could pass custom function to sorted and .sort functions >>> x=['kar','htar','har','ar'] >>> >>> sorted(x) ['ar', 'har', 'htar', 'kar'] >>> >>> sorted(x,cmp=customsort) ['kar', 'htar', 'har', 'ar'] Because, in My language, consonents are comes with this order "k","kh",....,"ht",..."h",...,"a" But In Python 3.x, looks like I could not pass cmp keyword >>> sorted(x,cmp=customsort) Traceback (most recent call last): File "<stdin>", line 1, in <module> TypeError: 'cmp' is an invalid keyword argument for this function Is there any alternatives or should I write my own sorted function too?

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  • How to implement this mechanism:

    - by Sorush Rabiee
    Hi i want to implement a dynamic relation mechanism with python something like: a:=10 b:=30 c:=a+b print c a+=20 print c output: 40 60 c is always result of a+b. so if a or b change, then c automatically updates value. i write a code in C# and do this by set and get mechanism. now want to translate it to python code for using in another program (FontLab Studio 5). I'm not so familiar with Python. does he have a get,set feature like C#? if not ho to implement one?

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  • How to OCR a specific region of a MODI.Document?

    - by Mark Kadlec
    I need to OCR a specific region of a scanned document and I am using MODI (Microsoft's Document Imaging COM object). My code currently OCR's the entire page (quite accurately!), but I would like to target a specific region of the page where the text is always static (order number). How can I do this? Here is my code for the page: MODI.Document md = new MODI.Document(); md.Create("c:\\temp\\mpk.tiff"); md.OCR(MODI.MiLANGUAGES.miLANG_ENGLISH, true, true); MODI.Image image = (MODI.Image)md.Images[0]; FileStream createFile = new FileStream("c:\\temp\\mpk.txt", FileMode.CreateNew); StreamWriter writeFile = new StreamWriter(createFile); writeFile.Write(image.Layout.Text); writeFile.Close(); md.Close(); Can I somehow specify the region of the image? Any help would be greatly appreciated!

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  • Replace into equivalent for postgresql and then autoincrementing an int

    - by Mohamed Ikal Al-Jabir
    Okay no seriously, if a postgresql guru can help out I'm just getting started. Basically what I want is a simple table like such: CREATE TABLE schema.searches ( search_id serial NOT NULL, search_query character varying(255), search_count integer DEFAULT 1, CONSTRAINT pkey_search_id PRIMARY KEY (search_id) ) WITH ( OIDS=FALSE ); I need something like REPLACE INTO for mysql. I don't know if I have to write my own procedure or something? Basically: check if the query already exists if so, just add 1 to the count it not, add it to the db I can do this in my php code but I'd rather all that be done in postgres C engine Thanks for helping

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  • Using LINQ-To-Entities to Generate Information

    - by parminder
    I am working on a website where a user can add tags to their posted books, much like is currently done for questions on Stack Overflow. Classes: Books { bookId, Title } Tags { Id Tag } BooksTags { Id BookId TagId } Here are few sample records. Books BookId Title 113421 A 113422 B Tags Id Tag 1 ASP 2 C# 3 CSS 4 VB 5 VB.NET 6 PHP 7 java 8 pascal BooksTags Id BookId TagId 1 113421 1 2 113421 2 3 113421 3 4 113421 4 5 113422 1 6 113422 4 7 113422 8 Questions I need to write something in LINQ to entity queries which gives me data according to the tags: Query: bookIds where tagid = 1 Returns: bookid: 113421, 113422 Query 2: tags 1 and 2 Returns: 113421 I need tags and their count to to show in related tags, so in first case my related tags class should have following result. RelatedTags Tag Count 2 1 3 1 4 2 8 1 Second Case: RelatedTags Tag Count 3 1 4 1 How do I do this in LINQ?

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  • Extending configuration for .Net 3.5 Applications

    - by Maximiliano Rios
    Due to a requirement in my current project, I have to build a configuration manager to handle configurations that merge local config info with database one. Custom configuration doesn't fit my needs, problem is that I don't know what's the type before loading certain information, for example: Loading database information I will able to know what's myhandler's type. Not previously. So I thought to write my own handler but I can't let set blank as type for sections, in fact .net requires to know what's the type to match myhandler nodes. I'm thinking on building a different parser to read XML nodes but I would prefer to match this structure. I've not found any information to do that yet, is there any way? Can I extend or hook up something into the framework to be capable of loading on-the-fly types and validate nodes? Thanks in advance.

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  • Can't run jUnit with Eclipse

    - by KimKha
    I use new Eclipse. Create demo test with jUnit (I added default jUnit library built-in Eclipse). Then I write this code: import junit.framework.*; import org.junit.Test; public class SimpleTest extends TestCase { public SimpleTest(String name) { super(name); } public final void main(String method){ } @Test public final void testSimpleTest() { int answer = 2; assertEquals((1+1), answer); } } But it doesn't run. In the Debug tab: org.eclipse.jdt.internal.junit.runner.RemoteTestRunner at localhost:52754 Thread [main] (Suspended (exception ClassNotFoundException)) URLClassLoader$1.run() line: not available [local variables unavailable] AccessController.doPrivileged(PrivilegedExceptionAction<T>, AccessControlContext) line: not available [native method] Launcher$AppClassLoader(URLClassLoader).findClass(String) line: not available Launcher$AppClassLoader(ClassLoader).loadClass(String, boolean) line: not available Launcher$AppClassLoader.loadClass(String, boolean) line: not available Launcher$AppClassLoader(ClassLoader).loadClass(String) line: not available How can I solve this?

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