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• Module autoloader in ZF

  - by ChrisRamakers

  The manual on Zend_Application_Module_Autoloader states the following: When using module bootstraps with Zend_Application, an instance of Zend_Application_Module_Autoloader will be created by default for each discrete module, allowing you to autoload module resources. Source: http://framework.zend.com/manual/zh/zend.loader.autoloader-resource.html#zend.loader.autoloader-resource.module This requires me to create an empty bootstrap class for each of my modules or else resource autoloading per module won't work with the build-in autoloader. Now I have two questions What is a discrete module? Is there a way to have this resource autoloader registered by default for each module without the need to create a bootstrap file for each module? I want it available in each module and creating so many empty bootstrap classes is something i'd rather prevent.

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• What is the best option for reading Java property files?

  - by Mr Morgan

  Hello I have an application which uses a servlet to read an intialization parameter from web.xml for the location of a property file. The serlvet then creates an instance of a class which stores the location of the file for other programs to read as required. This class has appropriate get and set methods. But my question concerns access to the properties: should the physical property file be read by each program as at runtime or should the properties be stored in memory instead? The properties are not currently altered at runtime but this could change? I've seen various alternative approaches but am not sure which is best. Thanks Mr Morgan

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• Setting Sql server security rights for multiple situations

  - by DanDan

  We have an application which uses an instance of Sql Server locally for its backend storage. The administrator windows login has had its sysadmin right revoked, and instead two sql logins have been created; one for the application with a secret password and one read only login we let users view the raw data with. This was working fine until we moved on FileStreams, which requires intergrated windows authentication. So now the sql server logins must be replaced. As a result, I am now reviewing all of our logins but I am not sure how it is possible. It seems that the application needs full read/write access, yet I still need to lock down writing to the tables so the user cannot login into the database and delete data randomly. Does anyone have any tips for setting multiple levels of security using intergrated windows logins, or can you direct me to any further reading? Some answers can also be found on serverfault: http://serverfault.com/questions/138763/setting-sql-server-security-rights-for-multiple-situations

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• Generating Javascript from PHP?

  - by Aristotle

  Are there any libraries or tools specifically designed to help PHP programmers write Javascript? Essentially, converting the PHP logic into Javascript logic. For instance: $document = new Document($html); $myFoo = $document->getElementById("foo"); $myFoo->value = "Hello World"; Being converted into the following output: var myFoo = document.getElementById("foo"); myFoo.value = "Hello World"; Of course it would be excellent if more complicated solutions could be derived too, perhaps converting objects and internal methods into javascript-objects, etc.

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• LINQ query checks for null

  - by user300992

  I have a userList, some users don't have a name (null). If I run the first LINQ query, I got an error saying "object reference not set to an instance of an object" error. var temp = (from a in userList where ((a.name == "john") && (a.name != null)) select a).ToList(); However, if I switch the order by putting the checking for null in front, then it works without throwing any error: var temp = (from a in userList where ((a.name != null) && (a.name == "john")) select a).ToList(); Why is that? If that's pure C# code (not LINQ), I think both would be the same. I don't have SQL profiler, I am just curious what will be the difference when they are being translated on SQL level.

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• NHibernate custom connection string configuration

  - by user177883

  I have a c# library project, that i configured using nhibernate, and I like people to be able to import this project and use the project. This project has FrontController that does all the work. I have a connection string in hibernate config file and in app.config file of another project. it would be nice for anyone to be able to set the connection string into this library project and use it. such as through a method which will take the connectiong string as parameter. or when creating a new instance of FrontController to pass the connection string to constructor. or if you have a better idea. How to do this? I d like this class library to use the same database of the project that s imported. How to set hibernate connection string programatically? same idea for log4net.

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• Cannot Debug Visual Basic 6 ActiveX Component On 64-bit OS

  - by Humanier

  Hi, The situation might sound a bit weird but I have to play with what I have. There's a Win2003 64-bit server OS and a legacy application written using Visual Studio 6. The app consists of two parts: ActiveX components written in VB6 and C++ code which uses them. I need to debug the components' code. I installed Visual Studio 6 on the server and I'm able to step into the component's code. Then I got following situation: 1) C++ code works until it needs to instantiate component A. 2) At this step we switch to VB6 and start debugging Component's A. 3) In the very beginning component A creates an instance of a class C exposed by component B. At this step VB6 debugger shows error message with title "OLEDB32.DLL" and following text: "Failed to load resource DLL C:\Program Files (x86)\Common Files\System\Ole DB\OLEDB32R.DLL" Additional information: The last step in initialization of the class C is opening an ADO connection to SQL server using OLEDB provider. I'd appreciate any ideas on how resolve this problem. Thanks in advance.

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• Resolution Problem with HttpRequestScoped in Autofac

  - by Page Brooks

  I'm trying to resolve the AccountController in my application, but it seems that I have a lifetime scoping issue. builder.Register(c => new MyDataContext(connectionString)).As<IDatabase>().HttpRequestScoped(); builder.Register(c => new UnitOfWork(c.Resolve<IDatabase>())).As<IUnitOfWork>().HttpRequestScoped(); builder.Register(c => new AccountService(c.Resolve<IDatabase>())).As<IAccountService>().InstancePerLifetimeScope(); builder.Register(c => new AccountController(c.Resolve<IAccountService>())).InstancePerDependency(); I need MyDataContext and UnitOfWork to be scoped at the HttpRequestLevel. When I try to resolve the AccountController, I get the following error: No scope matching the expression 'value(Autofac.Builder.RegistrationBuilder`3+<c__DisplayClass0[...]).lifetimeScopeTag.Equals(scope.Tag)' is visible from the scope in which the instance was requested. Do I have my dependency lifetimes set up incorrectly?

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• XML::LibXML Line Ending (whitespace) Problem.

  - by Gilbeg

  HI, I am parsing an XML file using LibXML in Perl. The problem that I have is the ending characters (whitespace) is treated as a text node. For instance, given an input like the following abc 123 The parser thinks that the number of child of node "books" is 3, they are: - text node (containing the char between and - element node of "book" - text node (containing the char between and Question is how do I tell LibXML to ignore whitespaces? I tried with no_blanks (that is $parser = XML::LibXML-new(no_blanks = 1) when construction the parser) but it seems that it has no effect. Thanks in advance

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• Are stack based arrays possible in C#?

  - by Bob

  Let's say, hypothetically (read: I don't think I actually need this, but I am curious as the idea popped into my head), one wanted an array of memory set aside locally on the stack, not on the heap. For instance, something like this: private void someFunction() { int[20] stackArray; //C style; I know the size and it's set in stone } I'm guessing the answer is no. All I've been able to find is heap based arrays. If someone were to need this, would there be any workarounds? Is there any way to set aside a certain amount of sequential memory in a "value type" way? Or are structs with named parameters the only way (like the way the Matrix struct in XNA has 16 named parameters (M11-M44))?

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• Can I retrieve data from server to client during an asynchronous post-back using ASP.NET Ajax Librar

  - by André Pena

  ASP.NET Ajax Library provides some client-side events. For instance: Sys.Application.add_load( function(args) { // handle the end of any asynchronous post-back. Every-time there's // a server round-trip, this method will be called. } ); During the asynchronous post-back I want to retrieve information to the client. This information must be available in some event like the discribed above. Does the UpdatePanel or the ScriptManager have any server-side way to retrieve data back to client during an asynchronous post-back?

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• Return data from subroutine while the subroutine is still processing

  - by Perl QuestionAsker

  Is there any way to have a subroutine send data back while still processing? For instance (this example used simply to illustrate) - a subroutine reads a file. While it is reading through the file, if some condition is met, then "return" that line and keep processing. I know there are those that will answer - why would you want to do that? and why don't you just ...?, but I really would like to know if this is possible. Thank you so much in advance.

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• PBKDF2-HMAC-SHA1

  - by Jason

  To generate a valid pairwise master key for a WPA2 network a router uses the PBKDF2-HMAC-SHA1 algorithm. I understand that the sha1 function is performed 4096 times to derive the PMK, however I have two questions about the process. Excuse the pseudo code. 1) How is the input to the first instance of the SHA1 function formatted? SHA1("network_name"+"network_name_length"+"network_password") Is it formatted in that order, is it the hex value of the network name, length and password or straight ASCII? Then from what I gather the 160 bit digest received is fed straight into another round of hashing without any additional salting. Like this: SHA1("160bit digest from last round of hashing") Rise and repeat. 2) Once this occurs 4096 times 256 bits of the output is used as the pairwise master key. What I don't understand is that if SHA1 produces 160bit output, how does the algorithm arrive at the 256bits required for a key? Thanks for the help.

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• "possible loss of precision" is Java going crazy or I'm missing something?

  - by Lo'oris

  I'm getting a "loss of precision" error when there should be none, AFAIK. this is an instance variable: byte move=0; this happens in a method of this class: this.move=(this.move<<4)|(byte)(Guy.moven.indexOf("left")&0xF); move is a byte, move is still a byte, and the rest is being cast to a byte. I get this error: [javac] /Users/looris/Sviluppo/dumdedum/client/src/net/looris/android/toutry/Guy.java:245: possible loss of precision [javac] found : int [javac] required: byte [javac] this.move=(this.move<<4)|(byte)(Guy.moven.indexOf("left")&0xF); [javac] ^ I've tried many variations but I still get the same error. I'm now clueless.

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• iPhone UITableView trigger a parent method?

  - by MidnightLightning

  Okay, so I'm working on an iPhone app with a preferences-esque section where there's a base TableView, which has one section, and several rows of customized cells to hold a name and a value label. Clicking on a row brings up another View, which allows the user to pick from a list (another TableView), and select an item. All of these TableViews are done programatically. The base TableView has a property that holds a Controller instance for each of the "pick from the list" Views. Each of the "pick from the list" views has a property called chosenValue that has the currently-selected option. I've gotten the UI to handle the didSelectRowAtIndexPath to update the chosenValue property and then "pop" the view (going back to the main TableView). But, even though the main TableView's cellForRowAtIndexPath method references the chosenValue property of the subview that's held in a property, the view doesn't update when an item is selected. In short, how can the sub-view trigger a reloadData on the parent object, after it "pops" and unloads?

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• jQuery SlideUp...But dont disappear off screen

  - by danit

  Is it possible to use .slideUp, but the object only slideUp by (For instance) by 20px instead of disappearing off screen? HTML: <div class="toolbar"> <p>Hide</p> <ul> <li>Tab 1</li> <li>Tab 2</li> </ul> </div> JQUERY: $(".toolbar p").click(function() { $(".toolbar").slideUp(); });

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• Why don't all System.Web.UI.WebControl classes with Text properties implement ITextControl?

  - by jrummell

  I'm curious why only some System.Web.UI.WebControl controls implement certain interfaces when they have the same properties of an interface. For instance, there are plenty of controls that have a Text property but only the following implement ITextControl: Label Literal DataBoundLiteral TextBox ListControl (TextBox and ListControl actually implement IEditableTextControl which implements ITextControl) TableCell, Button, HyperLink and others don't so I have to write code like this ITextControl textControl = control as ITextControl; TableCell tableCell = control as TableCell; if (textControl != null) { textControl.Text = value; } else if (tableCell != null) { tableCell.Text = value; } instead of this control.Text = value; Was this a design decision or an oversight?

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• boost pool_alloc

  - by mr grumpy

  Why is the boost::fast_pool_allocator built on top of a singleton pool, and not a separate pool per allocator instance? Or to put it another way, why only provide that, and not the option of having a pool per allocator? Would having that be a bad idea? I have a class that internally uses about 10 different boost::unordered_map types. If I'd used the std::allocator then all the memory would go back to the system when it called delete, whereas now I have to call release_memory on many different allocator types at some point. Would I be stupid to roll my own allocator that uses pool instead of singleton_pool? thanks

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• Jinja2 returns "None" string for Google App Engine models

  - by Brian M. Hunt

  Google App Engine models, likeso: from google.appengine.ext.db import Model class M(): name = db.StringProperty() Then in a Jinja2 template called from a Django view with an in instance of M passed in as m: The name of this M is {{ m.name }}. When m is initialized without name being set, the following is printed: The name of this M is None. The preferable and expected output (and the output when using Django templates) would be/is: The name of this M is . Do you know why this is happening, and how to get the preferred & expected output?

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• Reading file resource in Unix and MacOS

  - by Sanjeev

  Hi, I am writing my first wxWidgets application which aims to be cross-platform. The program uses dll file for plugins and in Windows, reads dll resource part for information regarding plugin name, author name etc. I have never used Unix or MacOS (little Linux though) and am wondering whether compiling binary for these other OSes will require changes to the code written for Windows. For instance, is there a DLL equivalent in Unix and MacOS? Are there any provisions of compiling resource strings and files into a such files? Thanks, Sanjeev

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• Compile error when calling ToList() when accessing many to many with Linq To Entities

  - by KallDrexx

  I can't figure out what I am doing wrong. I have the following method: public IList<WObject> GetRelationshipMembers(int relId) { var members = from r in _container.ObjectRelationships where r.Id == relId select r.WObjects; return members.ToList<WObject>(); } This returns the following error: Instance argument: cannot convert from 'System.Linq.IQueryable<System.Data.Objects.DataClasses.EntityCollection<Project.DomainModel.Entities.WObject>>' to 'System.Collections.Generic.IEnumerable<Project.DomainModel.Entities.WObject>' How can I convert the EntityCollection to a list without lazy loading?

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• Accessing the constructor by using Reflection

  - by Md. Rashim Uddin

  Assume the class is public and and the constructor is internal like as Public class A { private string text; internal A(string submittedText); public string StrText { get; } } In this case how could I Access the constructor by using Reflection. What I have done so far Type[] pTypes = new Type[1]; pTypes[0] = typeof(object); object[] argList = new object[1]; argList[0] = "Some Text"; ConstructorInfo c = typeof(A).GetConstructor (BindingFlags.NonPublic | BindingFlags.Instance, null, pTypes, null); A foo = (A)c.Invoke(BindingFlags.NonPublic, null, argList, Application.CurrentCulture); But it shows an error. Any Suggestions

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• Can somebody explain this Objective C method declaration syntax

  - by Doug R

  I'm working through an iPhone development book* without really knowing Objective C. For the most part I'm able to follow what's going on, but there are a few method declarations like the one below that I'm having a bit of trouble parsing. For example: - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger) section { return [self.controllers count]; //controllers is an instance variable of type NSArray in this class } It looks this is a method called numberOfRowsInSection, and it returns an NSInteger, and takes an NSInteger as a parameter which is locally called 'section'. But I don't understand all the references to tableView, or why this takes a parameter when it is not used within the method. Can somebody clarify this? Thanks. *p. 258, Beginning iPhone 3 Development, by Mark and LaMarche, published by Apress

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• getline at a certain line for file IO

  - by BSchlinker

  Is there anyway to use getline to read a specific line within a file? For instance, to immediately read line #20? It seems inefficient to do any type of look to read and discard earlier lines. I know about fseek, but there is no guarantee that the records will be the same length on each line. I imagine this is simply what is required in order to find lines. After all, to know when the end of the line has been reached, it needs to find the break line character, so it makes sense for it to need to read each line. Just wondering if there was any quicker method.

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• C# Win Forms Thread Pool - Unresponsive UI

  - by Goober

  Scenario I have a Windows Form Application. Inside the main form there is a loop that iterates around 3000 times, Creating a new instance of a class on a new thread to perform some calculations. Baring in mind that this setup uses a Thread Pool, the UI does stay responsive when there are only around 100 iterations of this loop (100 Assets to process). But as soon as this number begins to increase heavily, the UI locks up into eggtimer mode and the thus the log that is writing out to the listbox on the form becomes unreadable. Question Am I right in thinking that the best way around this is to use a Background Worker? And is the UI locking up because even though I'm using lots of different threads (for speed), the UI itself is not on its own separate thread? Suggested Implementations greatly appreciated.

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