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• Reference methods defined in one JScript file from another JScript

  - by Thomas Svensen

  I am writing some server-side scripts using jscript and WSH. The scripts are getting quite long, and some common functions and variables would fit better in a general library script which I included in my various script instances. But, I cannot find a way reference one JScript file from another. For a moment, I though reading the file contents and passing it to "eval()" could work. But, as it says on MSDN: "Note that new variables or types defined in the eval statement are not visible to the enclosing program." (http://msdn.microsoft.com/en-us/library/b51a45x6.aspx) Is there any way to include/refence a JScript from another one?

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• So how I can control the page contents loading sequence in dojo

  - by David Zhao

  Hi there, I'm using dojo for our UI's, and would like to load certain part of page contents in sequence. For example, for a certain stock, I'd like to load stock general information, such as ticker, company name, key stats, etc. and a grid with the last 30 days open/close prices. Different contents will be fetched from the server separately. Now, I'd like first load the grid so the user can have something to look at, then, say, start loading of key stats which is a large data set takes longer time to load. How do I do this. I tried: dojo.addOnLoad(function() { startGrid(); //mock grid startup function which works fine getKeyStats(); //mock key stat getter function also works fine }); But dojo is loading getKeyStats(), then startGrid() here for some reason, and sequence doesn't seem be matter here. So how I can control the loading sequence at will? Thanks in advance! David

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• LINQ-To-SQL and Many-To-Many Relationship Deletions

  - by Jake

  I have a many-to-many relationship between two tables, let's say Friends and Foods. If a friend likes a food I stick a row into the FriendsFoods table, like this: ID Friend Food 1 'Tom' 'Pizza' FriendsFoods has a Primary Key 'ID', and two non-null foreign keys 'Friend' and 'Food' to the 'Friends' and 'Foods' tables, respectively. Now suppose I have a Friend tom .NET object corresponding to 'Tom', and Tom no longer likes pizza (what is wrong with him?) FriendsFoods ff = tom.FriendsFoods.Where(x => x.Food.Name == 'Pizza').Single(); tom.FriendsFoods.Remove(ff); pizza.FriendsFoods.Remove(ff); If I try to SubmitChanges() on the DataContext, I get an exception because it attempts to insert a null into the Friend and Food columns in the FriendsFoods table. I'm sure I can put together some kind of convoluted logic to track changes to the FriendsFoods table, intercept SubmitChanges() calls, etc to try and get this to work the way I want, but is there a nice, clean way to remove a Many-To-Many relationship with LINQ-To-SQL?

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• Scala regex Named Capturing Groups

  - by Brent

  In scala.util.matching.Regex trait MatchData I see that there support for groupnames (Named Capturing Groups) But since Java does not support groupnames until version 7 as I understand it, Scala version 2.8.0.RC4 (Java HotSpot(TM) 64-Bit Server VM, Java 1.6. gives me this exception: scala> val pattern = """(?<login>\w+) (?<id>\d+)""".r java.util.regex.PatternSyntaxException: Look-behind group does not have an obvio us maximum length near index 11 (?<login>\w+) (?<id>\d+) ^ at java.util.regex.Pattern.error(Pattern.java:1713) at java.util.regex.Pattern.group0(Pattern.java:2488) at java.util.regex.Pattern.sequence(Pattern.java:1806) at java.util.regex.Pattern.expr(Pattern.java:1752) at java.util.regex.Pattern.compile(Pattern.java:1460) So the question is Named Capturing Groups supported in Scala? If so any examples out there? If not I might look into the Named-Regexp lib from clement.denis.

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• System.EntryPointNotFoundException:while importing libsrp in a c# code under ubuntu

  - by Hema Joshi

  hi, i am importing libsrp.so in a c# code under ubuntu.my code is using System; using System.IO; using System.Text; using System.Runtime.InteropServices; namespace Main { public static class Test { [DllImport("libsrp.so" ,EntryPoint = "SRP_initialize_library", CallingConvention=CallingConvention.Cdecl)] public static extern int SRP_initialize_library(); [DllImport("libsrp.so" ,EntryPoint = "SRP_finalize_library", CallingConvention=CallingConvention.Cdecl)] public static extern int SRP_finalize_library(); } public class Test1 { public static void Main( string[] args ) { Console.Write("output is:", Test.SRP_initialize_library()); Test. SRP_finalize_library(); Console.Write("\n"); } } } but while runnign the code using mono i am finding error Unhandled Exception: System.EntryPointNotFoundException: SRP_initialize_library at (wrapper managed-to-native) Main.Test:SRP_initialize_library () at Main.Test1.Main (System.String[] args) [0x00000] i am unable to find what is the problem? please tell me where is the problem?

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• kernelHow to read/write files within kernel module?

  - by Methos

  I know all the discussions about why one should not read/write files from kernel, instead how to use /proc or netlink to do that. I want to read/write anyway. I have also read http://www.linuxjournal.com/article/8110 However, problem is 2.6.30 does not export sys_read(). Rather its wrapped in SYSCALL_DEFINE3. So if I use that in my module, I get following warnings: WARNING: "sys_read" [xxx.ko] undefined! WARNING: "sys_open" [xxx.ko] undefined! Obviously insmod cannot load the module because linking does not happen correctly. Questions: How to read/write within kernel after 2.6.22 (where sys_read()/sys_open() are not exported)? In general, how to use system calls wrapped in macro SYSCALL_DEFINEn() from within the kernel?

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• Learning Visual C++ 2008 and C++ at the same time? Any resources to recommend?

  - by Javed Ahamed

  Hey guys, I am trying to learn Visual C++ 2008 and C++ at the same time to get involved with sourcemod, a server side modding tool for valve games. However I have never touched Visual C++ or C++ in general, and doing some preliminary research I am quite confused on these different versions of C++ (mfc, cli, win32), and why a lot of people seem to hate Visual C++ and use something like Borland instead. I really learn visually, and have used videos from places like Lynda.com with great success. I was wondering if anyone had any exceptional resources they had come across to teach Visual C++ 2k8, with its intricacies and setting up the IDE along with C++ at the same time. Books would be nice, but videos would be preferred, and I don't mind paying for resources. Thanks in advance!

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• How do I use test/beta Perl modules from test Perl scripts?

  - by DVK

  If my Perl code has a production code location and "beta" code location (e.g. production Perl code us in /usr/code/scripts, BETA Perl code is in /usr/code/beta/scripts; production Perl libraries are in /usr/code/lib/perl and BETA versions of those libraries are in /usr/code/beta/lib/perl, is there an easy way for me to achieve such a setup? The exact requirements are: The code must be THE SAME in production and BETA location. To clarify, to promote any code (library or script) from BETA to production, the ONLY thing which needs to happen is literally issuing cp command from BETA to prod location - both the file name AND file contents must remain identical. BETA versions of scripts must call other BETA scripts and BETA libraries (if exist) or production libraries (if BETA libraries do not exist) The code paths must be the same between BETA and production with the exception of base directory (/usr/code/ vs /usr/code/beta/) I will present how we solved the problem as an answer to this question, but I'd like to know if there's a better way.

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• ChannelFactory don't have an address on the endpoint, why?

  - by Maxim

  When I create a new instance of a ChannelFactory: var factory = new ChannelFactory<IMyService>(); and that I create a new channel, I have an exception saying that the address of the Endpoint is null. My configuration inside my web.config is as mentioned and everything is as it is supposed to be (especially the address of the endpoint). If I create a new MyServiceClientBase, it loads all the configuration from my channel factory: var factoryWithClientBase = new MyServiceClientBase().ChannelFactory; Console.WriteLine(factoryWithClientBase.Endpoint.Address); //output the configuration inside the web.config var factoryWithChannelFactory = new ChannelFactory<IMyService>(); Console.WriteLine(factoryWithChannelFactory.Endpoint.Address); //output nothing (null) Why?

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• Why is thread local storage so slow?

  - by dsimcha

  I'm working on a custom mark-release style memory allocator for the D programming language that works by allocating from thread-local regions. It seems that the thread local storage bottleneck is causing a huge (~50%) slowdown in allocating memory from these regions compared to an otherwise identical single threaded version of the code, even after designing my code to have only one TLS lookup per allocation/deallocation. This is based on allocating/freeing memory a large number of times in a loop, and I'm trying to figure out if it's an artifact of my benchmarking method. My understanding is that thread local storage should basically just involve accessing something through an extra layer of indirection, similar to accessing a variable via a pointer. Is this incorrect? How much overhead does thread-local storage typically have? Note: Although I mention D, I'm also interested in general answers that aren't specific to D, since D's implementation of thread-local storage will likely improve if it is slower than the best implementations.

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• Unicode characters in URLs

  - by Pekka

  In 2010, would you serve URLs containing UTF-8 characters in a large web portal? Unicode characters are forbidden as per the RFC on URLs (see here). They would have to be percent encoded to be standards compliant. My main point, though, is serving the unencoded characters for the sole purpose of having nice-looking URLs, so percent encoding is out. All major browsers seem to be parsing those URLs okay no matter what the RFC says. My general impression, though, is that it gets very shaky when leaving the domain of web browsers: URLs getting copy+pasted into text files, E-Mails, even Web sites with a different encoding HTTP Client libraries Exotic browsers, RSS readers Is my impression correct that trouble is to be expected here, and thus it's not a practical solution (yet) if you're serving a non-technical audience and it's important that all your links work properly even if quoted and passed on? Is there some magic way of serving nice-looking URLs in HTML http://www.example.com/düsseldorf?neighbourhood=Lörick that can be copy+pasted with the special characters intact, but work correctly when re-used in older clients?

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• pubsubhubbub link with Project Rome

  - by itsadok

  I want to use Project Rome to create an RSS feed, using the code from the tutorial as base. I would like to add a pubsubhubbub discovery link, but there doesn't seem to be a general way to do so. I can use a Link object if I create an atom feed (which I don't want to limit myself to), or I can just add foreign markup, like this: // import org.jdom.Element Element element = new Element("link"); element.setAttribute("rel", "hub"); element.setAttribute("href", "https://myhub.example.com/endpoint"); feed.setForeignMarkup(Arrays.asList(element)); But it feels ugly. Is this really the best way to do this?

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• Test Driven Development For Complex Methods involving external dependency

  - by bill_tx

  I am implementing a Service Contract for WCF Service. As per TDD I wrote a test case to just pass it using hardcoded values. After that I started to put real logic into my Service implementation. The actual logic relies on 3-4 external service and database. What should I do to my original test case that I wrote ? If i Keep it same in order to make test pass it will have to call several other external services. So I have question in general what should I do if I write a test case for a Business Facade first using TDD and later when I add real logic, if it involves external dependency.

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• How to add an Interbase connection pool to glassfish?

  - by kgrad

  Hi, I am attempting to add an Interbase connection pool to GlassFish v3 to use EJB 3.1 in a project. The glassfish log appears to be connecting to my database properly, it spits out all my table names and indices. However, I get an error INFO: fetching database metadata SEVERE: could not complete schema update java.lang.NullPointerException at interbase.interclient.ResultSet.local_Close(Unknown Source) ... And when I ping the connection pool from within Glassfish I receive "Ping failed Exception - null". I have the following properties set with my connectionpool: resource type: javax.sql.DataSource Datasource Classname: interbase.interclient.DataSource portNumber: 3050 as well as my database info. I can't seem to find information elsewhere. This question is similar but did not receive an answer. thanks.

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• How can I tell datacontext I've updated a record via StoreProcedure

  - by Ldsenow

  Hi Geeks, I've a stroe procedure to update a record and after running it I use LinqToSql to delete the record. I know it is weird but I just want to test how smart the datacontext it is and understand how it works. Since the datacontext caches the results so any change via it can be recorded but now I use a store procedure to update something, it would not know. So when I try to delete it, an exception comes out "Row not found or changed". How I can tell the datacontext what I have updated? If I can do so the problem will sovle.

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• how to extract elements from a list in python ?

  - by Stefano Borini

  I feel suddenly uneasy of not being able to perform this operation easily. It could be that I'm tired, or that there's really no way (google didn't help), but... if you have a list in python, and want to extract element at indices say 1, 2 and 5 into a new list, how do you do ? This is how I did it, but I'm not very satisfied >>> a [10, 11, 12, 13, 14, 15] >>> [x[1] for x in enumerate(a) if x[0] in [1,2,5]] [11, 12, 15] any better way ? more in general, given a tuple with indices, how to use this tuple to extract the corresponding elements from a list, eventually with duplication (e.g. tuple (1,1,2,1,5) produces [11,11,12,11,15] )

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• Calling python from Java?

  - by griffin

  I'm trying to call Jython from a Java 6 application using javax.script: import javax.script.ScriptEngine; import javax.script.ScriptEngineManager; import javax.script.ScriptException; public class jythonEx { public static void main (String args[]) throws ScriptException { ScriptEngineManager mgr = new ScriptEngineManager(); ScriptEngine pyEngine = mgr.getEngineByName("python"); try { pyEngine.eval("print \"Python - Hello, world!\""); } catch (Exception ex) { ex.printStackTrace(); } } } This is causing a NullPointerException: java.lang.NullPointerException at jythonEx.main(jythonEx.java:12) Does anyone have any idea what I'm doing wrong here?

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• QTableWidget signal cellChanged(): distinguish between user input and chage by routines

  - by crabman

  i am using PyQt but my question is a general Qt one: I have a QTableWidget that is set up by the function updateTable. It writes the data from DATASET to the table when it is called. Unfortunately this causes my QTableWidget to emit the signal cellChanged() for every cell. The signal cellChanged() is connected to a function on_tableWidget_cellChanged that reads the contents of the changed cell and writes it back to DATASET. This is necessary to allow the user to change the data manually. So everytime the table is updated, its contents are written back to DATASET. Is there a way to distinguish if the cell was changed by the user or by updateTable? i thought of disconnecting on_tableWidget_cellChanged by updateTable temporarily but that seems to be a little dirty.

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• How to make a reference to a normal java class from GWT server side

  - by mohammed-qumhieh

  hello I building my project using GWT plugin for eclipse Galileo, after i done from RPC between the server and client, i trying to make a reference from gwt server side to normal java class in non-gwt-project, but every time i make an object from the class (which in non-gwt-project) gives me ClassNotFoundException. i did the buildpath for the gwt project, but still gives me the same exception, is there a way to make that from server side (not from client side). i need help please, i spent a lot of time searching for solution but i did not found anything. i appreciate any suggestions...thanks

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• WebClient DownloadStringCompleted Never Fired in Console Application

  - by azamsharp

  I am not sure why the callback methods are not fired AT ALL. I am using VS 2010. static void Main(string[] args) { try { var url = "some link to RSS FEED"; var client = new WebClient(); client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted); client.DownloadDataCompleted += new DownloadDataCompletedEventHandler(client_DownloadDataCompleted); client.DownloadStringAsync(new Uri(url)); } catch (Exception ex) { Console.WriteLine(ex.Message); } } // THIS IS NEVER FIRED static void client_DownloadDataCompleted(object sender, DownloadDataCompletedEventArgs e) { Console.WriteLine("something"); } // THIS IS NEVER FIRED static void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e) { Console.WriteLine("do something"); var rss = XElement.Parse(e.Result); var pictures = from item in rss.Descendants("channel") select new Picture { Name = item.Element("title").Value }; foreach (var picture in pictures) { Console.WriteLine(picture.Name); Console.WriteLine(picture.Url); } }

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• Ruby on Rails 2.3.5: update_all failing on ActiveRecord

  - by randombits

  I'm trying to update a collection of records in my database using ActiveRecord's update_all. Enter script/console. MyModel.update_all("reserved = 1", :order => 'rand()', :limit => 1000) ActiveRecord thinks order is a column, says it's unknown and throws an exception. According to the documentation though, my syntax looks sane. This is RoR 2.3.5. When doing MyModel.update_all("reserved = 1") alone, it works just fine. Also if I do MyModel.update_all("reserved = 1", "reserve_type = 2", :order = "rand()", :limit = 1000) = 0 0 rows affected. I'm simply trying to do: UPDATE MyModel SET reserved=1, reserve_type=2 ORDER BY RAND() LIMIT 1000

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• Help a Python newbie with a Django model inheritance problem

  - by Joshmaker

  I'm working on my first real Django project after years of PHP programming, and I am running into a problem with my models. First, I noticed that I was copying and pasting code between the models, and being a diligent OO programmer I decided to make a parent class that the other models could inherit from: class Common(model.Model): self.name = models.CharField(max_length=255) date_created = models.DateTimeField(auto_now_add=True) date_modified = models.DateTimeField(auto_now=True) def __unicode__(self): return self.name class Meta: abstract=True So far so good. Now all my other models extend "Common" and have names and dates like I want. However, I have a class for "Categories" were the name has to be unique. I assume there should be a relatively simple way for me to access the name attribute from Common and make it unique. However, the different methods I have tried to use have all failed. For example: class Category(Common): def __init__(self, *args, **kwargs): self.name.unique=True Spits up the error "Caught an exception while rendering: 'Category' object has no attribute 'name' Can someone point me in the right direction?

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• Why doesn't .NET find the OpenSSL.NET dll?

  - by Lazlo

  EDIT (the whole question, it was too unclear) I want to use OpenSSL.NET The OpenSSL.NET install instructions page: INSTALL Make sure you have libeay32.dll and ssleay32.dll in the current working directory of your application or in your PATH. DONE In your .NET project, add a reference to the ManagedOpenSsl.dll assembly. DONE I have put libeay32.dll and ssleay32.dll in both my bin/Debug and bin/Release directories. I have also put them in system32. Here is my FULL code: using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { try { OpenSSL.Crypto.RSA rsa = new OpenSSL.Crypto.RSA(); } catch (Exception e) { Console.WriteLine(e.InnerException.Message); } Console.Read(); } } } I get the following error: (Unable to load DLL 'libeay32') Here is the Process Monitor log (upon request): What am I doing wrong? Why isn't the DLL found?

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• CruiseControl: How to read logs from exec task

  - by Marty

  I start an external groovy script via cruisecontrol, which basically works. My problem is that if the groovy script fails I only get the "error string found" in my cruise webapp and email; its even not in the log files. The groovy script writes it output to stdout and to a logfile. How it is possible to display the output of an external script in the cruisecontrol logs? <project name="proj"> <schedule> <exec workingdir="/myscripts/folder" command="//bin/groovy" args="build.groovy -p ${project.name}.properties" errorstr="Exception"/> </schedule> </project>

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• How to kill msvsmon.exe when finished remote debugging?

  - by dferraro

  Hi, We are a .NET LOB shop using MS CRM as our CRM platform. To this end, we many times a day during development phases are using remote debugging due to 2 connection limit to the server. We are able to setup remote debugging without logging onto the machine by using PsExec. This works great - but how the heck do we kill the remote debugger for that user, once we are finished debugging? In fact, not even sure how to kill the remote debugger in general, even when manually opening it... without remoting into server and using task manager, or keeping the server open and doing File-Exit on the debugger. Any advice?

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