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• Managing several hundred occurrences of NSLocalizedString

  - by Gordon Hughes

  My application has several hundred points of localisation, some of which can be reused many times. To prevent from hunting and pecking through code to find occurrences of a particular NSLocalizedString, I create a macro for each in a header file using the #define preprocessor directive. For example: #define kLocFirstString NSLocalizedString(@"Default Text", @"Comment") #define kLocSecondString NSLocalizedString(@"More Text", @"Another comment") ... When I want to refer to a particular string, I do so by its macro name. This method has been working nicely for me, but I'm concerned that such blatant abuse of #define is frowned upon. From the standpoint of "correctness", should I just inline each NSLocalizedString with the code, or is there another method (extern NSString *aString; perhaps?) that I can use to collect the declarations in one place?

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• How to assign default values and define unique keys in Entity Framework 4 Designer

  - by csharpnoob

  Hello, I've had a look at the Entity Framework 4. While generating code for the SQL Server 2008 I came to the point where I want to define some default values for some fields. how to define in the designer for a Created DateTime Field the DateTime.Now default value? - Error 54: Default value (DateTime.Now) is not valid for DateTime. The value must be in the form 'yyyy-MM-dd HH:mm:ss.fffZ' how to make for code generation a string Field unique. Like E-Mail or Username can exists only once in the table. I've search alot in the internet and also checked my books Pro Entity Framework 4.0 and Programming Entity Framework. But none of them seems to come up with the default value issue, or using sql commands as default values for database generation. Another thing is, how to prevent on database generation always from droping tables? Instead i want to append non existing fields and keep the data. Thanks for any suggestions.

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• Scope of object properties & methods

  - by Anish

  In the article Show love to the object literal, it's said: When we have several scripts in a page, the global variables & functions will get overwritten if their name repeats. One solution is to make the variables as properties & functions as methods of an object, and access them via the object name. But will this prevent the issue of variables getting into the global namespace? <script> var movie = { name: "a", trailer: function(){ //code } }; </script> In the above code which elements gets added to the global namespace? a) Just the object name - movie b) Object name as well as the properties and methods inside it – movie, movie.name, movie.trailer()

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• Jasper Report doc export margin problem

  - by Nods

  Hi there, Im using Jasper Reports to generate a word (docx) document but I have a problem when I want to try to print the doc. The exporter messes up the margins of the page. Does anyone know how to prevent that from happening. I know how to set the margin in iReport, but it just makes the data generate further from the page borders, but the margins in word which can be adjusted at the top of the page is laying right at the edge. Has anyone had this problem? Thanks for the help, in advance, Nods

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• Remove another user's lock obtained with sp_getapplock on SQL Server

  - by joshperry

  We have a system that uses sp_getapplock to create an exclusive mutex any time someone opens an order in the GUI. This is used to prevent multiple people from making changes to an order simultaneously. Sometimes people will open an order and go home, leaving it open. This effectively blocks anyone from being able to make changes to the order. I then get emails, calls and end up doing a kill <spid> in enterprise manager. Obviously I've gotten sick of this and want to make a quick self-service webform. The main problem I've run into is that kill requires sysadmin privileges, which I do not want to give to the user that the our website runs as. I have tried sp_releaseapplock but this doesn't let you release another user's lock (even when calling it as a sysadmin). So, finally my question; does anyone know of an alternative method to release a lock that was obtained by another user using sp_getapplock?

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• problem with crawl many url in .net: Server IP not ping. maybe bandwidth or http connection limit ex

  - by Hamid

  Hi to all I develop web crawling service (windows service / multi-thread) . its work fine, but sometimes my server network not response. and i can't ping server IP (from internet), but can ping by other network card (local ip) that not access to internet. after i open server with remote desktop and stop crawling service. i could ping. What's my problem? Bandwidth limit or max connection limit exceed or ??? how to prevent this issue? Note: when this problem occur, i open browser for browse web site, but can't open any website!!! Could you please help me. Thanks in advanced

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• How to create virtual Environment for users on server

  - by Bhushan Nagaonkar

  I have a web application where users can register them self and then save Java and C++ programs in their account. Programs are saved in a tmp directory like, /tmp -user1 --program1 --program2 -user2 --program1 --program2 So all the users folders are in same "tmp" directory. I want to know how can I proved security by not allowing a user to access files of other users. A user will be executing a java or c++ program in his folder which can be used to read files on the server. How to prevent this? I am new to this thing I don't know how to go about this. The server is Linux server and project is in python using Django. Thank in advance

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• Performance differences between iframe hiding methods?

  - by Ender

  Is there a major performance difference between the following: <iframe style="visibility:hidden" /> <iframe style="width:0px; height:0px; border:0px" /> I'm using a hidden iframe to pull down and parse some information from an external server. If the iframe actually attempts to render the page, this may suck up a lot of CPU cycles. Of course, I'd ideally just want to get the raw markup - for example, if I could prevent the iframe from loading img tags, that would be perfect.

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• [Web] Eventlistener for form input on iphone?

  - by ketenshi

  I'm playing around with jQTouch to create a web app on the iPhone. I'm using the scrolling extension to create the effect of a fixed toolbar on the top of the page while still able to scroll the rest of the page via a scrollable div. Everything works fine except for when a user pulls up the keyboard in order to fill in form elements in the scrollable div. The whole body is pushed to top and the ugly url bar is shown. Is there a way to prevent this?

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• How disable RequiredFieldValidator in script

  - by jlp

  I have TextBox with RequiredFieldValidator on my page. I also have link that calls some simple javascript. <asp:TextBox ID="TextBox1" runat="server" /> <asp:RequiredFieldValidator ID="RequiredFieldValidator4" runat="server" ControlToValidate="TextBox1" Display="Dynamic" /> <asp:LinkButton ID="Link1" runat="server" OnClientClick="DoSomething(); return false;" CausesValidation="false"Text="Do" /> function DoSomething() { textbox1.val("blah"); } How to prevent RequiredFieldValidator to fire when TextBox1 is empty and it looses focus? I want RequiredFieldValidator only to fire on postback.

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• Matlab tutorial for programmers

  - by Jonas

  I'm getting some new students soon, who will be writing Matlab code. They're new to Matlab, but they have experience coding in Java and C++. I'm going to have them go through the 'Getting Started' section of the Matlab help. In addition, I want to give a small tutorial with the goal to prevent them from making some of the most common mistakes people make when switching to Matlab ("Matlab starts counting at 1"), and show them some features that they may not be aware of when coming from other languages ("you can subtract a scalar directly from an array, and for vectors, there's bsxfun"). What are the most important things I should tell them?

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• How to tune ASP.NET CreateUserWizard?

  - by Max

  I have created ASP.NET WebForms site on IIS 7.5. I want to create step by step user registration. I want to store the basic and detailed information about registered users in a specially created database table (not in aspnet_users table). I want to validate email first and then prevent next registration step for the user whose email address already exists in the database. At the last registration step I want to present summary form. All previous input and select fields should be duplicated in this form with "disabled" attribute. Please tell me how to adjust CreateUserWizard ASP.NET Control and web.config file to these needs?

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• FxCop giving a warning on private constructor CA1823 and CA1053

  - by Luis Sánchez

  I have a class that looks like the following: Public Class Utilities Public Shared Function blah(userCode As String) As String 'doing some stuff End Function End Class I'm running FxCop 10 on it and it says: "Because type 'Utilities' contains only 'static' ( 'Shared' in Visual Basic) members, add a default private constructor to prevent the compiler from adding a default public constructor." Ok, you're right Mr. FxCop, I'll add a private constructor: Private Utilities() Now I'm having: "It appears that field 'Utilities.Utilities' is never used or is only ever assigned to. Use this field or remove it." Any ideas of what should I do to get rid of both warnings?

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• Avoiding display of Visual Studio Debugger when starting a new process from within java.exe

  - by Matt Sheppard

  How can I, from within a java program on windows, prevent a debugger window being displayed if a program I invoke crashes, and how can I detect the fact that it has crashed? Background I have a problem with a java application running on Windows which is launching an unreliable third party program by way of ProcessBuilder.start(). Specifically, if the external program crashes, the 'Visual Studio Just-In-time Debugger' window pops up asking if the user wants to debug the program. From the java application side, I'm happy to deal with the fact that under some circumstances, the third party program will crash, but I'd like to be able to detect and silently handle that situation from within the Java code without requiring any user interaction.

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• Suppressing default anchor behavior in Safari with jQuery

  - by Macy Abbey

  Hello, I am attempting to prevent default anchor behavior in Safari using the jQuery library. Unfortunately, the standard techniques of returning false or using event.preventDefault() do not seem to be working in Safari. Could anyone help me with this issue? The code I'm working with is like this: $('#main .green-tabs a').live("click",function(event){ $('.green-tabs a').removeClass('active'); $(this).addClass('active'); event.preventDefault(); var that = this; return LolPage(event,that);});

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• Building Java projects with circular imports in Eclipse

  - by Buggieboy

  I have a legacy Java (not my native language) app that I'm trying to build in Eclipse Galileo. As it's not my own, I can't speak to the quality of the design, but I am coming across a number of instances where I'll have something like this: In a project called, say, "lib_a", I'll have a file containing this: import com.acme.lib_b.onething; Project "lib_b" on the other hand, will contain: import com.acme.lib_a.anotherthing; Of course, the problem is that one project can't be built because the errors prevent me from creating a .jar file that can be added as an external archive to the other project, and vice versa. It seems to me that this must be a fairly common occurence in building Java applications. Rewriting it from scratch is not an option here, so I'd like to know "what other folks do."

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• Naming a typedef for a boost::shared_ptr<const Foo>

  - by Blair Zajac

  Silly question, but say you have class Foo: class Foo { public: typedef boost::shared_ptr<Foo> RcPtr; void non_const_method() {} void const_method() const {} }; Having a const Foo::RcPtr doesn't prevent non-const methods from being invoked on the class, the following will compile: #include <boost/shared_ptr.hpp> int main() { const Foo::RcPtr const_foo_ptr(new Foo); const_foo_ptr->non_const_method(); const_foo_ptr->const_method(); return 0; } But naming a typedef ConstRcPtr implies, to me, that the typedef would be typedef const boost::shared_ptr<Foo> ConstRcPtr; which is not what I'm interested in. An odder name, but maybe more accurate, is RcPtrConst: typedef boost::shared_ptr<const Foo> RcPtrConst; However, Googling for RcPtrConst gets zero hits, so people don't use this as a typedef name :) Does anyone have any other suggestions?

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• Android ScrollView jumps around when setting child visibility to View.GONE

  - by Mike

  I have a ScrollView that contains an number of other views (TextViews, ImageViews, etc.). The ScrollView is taller than the screen. I have an AsyncTask that updates the children of the ScrollView based on an http response. I've discovered an interesting behavior that I can't figure out how to work around. If I set any of the children's visibilities to View.INVISIBLE as part of the AsyncTask.onPostExecute(), everything works fine. However, if I set any of the children's visibilities to View.GONE, the ScrollView jumps down from the top when onPostExecute() is called. Exactly how far seems to vary. I'm guessing that re-laying out the ScrollView is causing it to scroll away from the top for some reason. So the question is: is there a way to either prevent or work around this behavior? PS. Using ScrollView.jump(FOCUS_UP) as a workaround isn't ideal since that'll force the user to the top even if they had intended to scroll down.

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• ruby on rails params injection

  - by Julien P.

  Hello everyone, I have a question about ruby on rails and the process of assigning variables using the params variable passed through a form class User attr_accessible :available_to_admins, :name end Let's say that I have a field that is only available to my admins. Assuming that you are not an admin, I am going to not display the available_to_admins input in your form. After that, when I want to save your data I'll just do a: User.update_attributes(params[:user]) If you are an admin, then no problem, the params[:user] is going to contain name and available_tu_admins and if you're not then only your name. Since the available_to_admins is an attr_accessible parameter, how should I prevent non admin users from being able to inject a variable containing the available_to_admins input with their new value?

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• loading HTML fragments with jQuery

  - by sam

  Hi everybody, I'm very new to jQuery, Ajax and things like these. I've found solutions on how to inject HTML fragments into my site: $(document).ready(function(){ $('a').click(openContent); //binding all anchors to this function }); function openContent(){ var path = $(this).attr('href'); $('#content').load(path); return false; //to prevent browser from loading the single HTML fragment } That works really fine! The problem is, these function won't be executed when clicking on anchors located in the new HTML fragment which were injected right before. So the fragment won't get injected into div, the browser will only load the fragment for itself. Hope there are solutions which aren't that tricky... thanks sam

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• Jquery callback function executes over and over again...

  - by Pandiya Chendur

  This my jquery function, function getRecordspage(curPage, pagSize) { // code here $(".pager").pagination(strarr[1], { callback: function() { getRecordspage(2, 5);},current_page: curPage - 1, items_per_page:'5', num_display_entries: '5', next_text: 'Next', prev_text: 'Prev', num_edge_entries: '1' }); } and i call this jquery function, <script type="text/javascript"> $(document).ready(function() { getRecordspage(1, 5); }); </script> As you see my It works fine for 1st time and my callback function is configured to the current function itself... when it gets called the callback gets executed over and over again.... How can i prevent this? Any suggestion....

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• Cloning java ArrayList and preventing it from modifications

  - by user222164

  I have a data structure like a database Rowset, which has got Rows and Rows have Columns. I need to initialize a Columns with null values, current code is to loop thru each column for a row and initialize values to NULL. Which is very inefficient if you have 100s or rows and 10s of column. So instead I am keeping a initialized ArrayList of columns are RowSet level, and then doing a clone of this Arraylist for individual rows, as I believe clone() is faster than looping thru each element. row.columnsValues = rowsset.NullArrayList.clone() Problem with this is NullArrayList can be accidentally modified after being cloned, thus sacrificing the integrity of ArrayList at RowSet level, to prevent I am doing 3 things 1) Delcaring ArrayList as final 2) Any elements I insert are final or null 3) Methods thurough this arrayList are passed to other arrays are declared a final. Sounds like a plan, do you see any holes ?

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• Double encoded url being fully decoded in ASP.NET

  - by Brad R

  I have just come across something that is quite strange and yet I haven't found any mention on the interwebs of others having the same problem. If I hit my ASP.NET application with a double encoded url then the Request["myQueryParam"] will do a double decode of the query for me. This is not desirable as I have double encoded my query string for a good reason. Can others confirm I'm not doing something obviously wrong, and why this would happen. A solution to prevent it, without doing some nasty query string parsing, would be great too! As an example if you hit the url: http://localhost/MyApp?originalUrl=http%3a%2f%2flocalhost%2fAction%2fRedirect%3fUrl%3d%252fsomeUrl%253futm_medium%253dabc%2526utm_source%253dabc%2526utm_campaign%253dabc (For reference %25 is the % symbol) Then look at the Request["originalUrl"] (page or controller) the string returned is: http://localhost/Action/Redirect?Url=/someUrl?utm_medium=abc&utm_source=abc&utm_campaign=abc I would expect: http://localhost/Action/Redirect?Url=%2fsomeUrl%3futm_medium%3dabc%26utm_source%3dabc%26utm_campaign%3dabc I have also checked in Fiddler and the URL is being passed to the server correctly (one possible culprit could have been the browser decoding the URL before sending).

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• Unkillable console windows

  - by rep_movsd

  I'm developing an OpenGL based 2d simulation with GLUT under Visual C++ 2008, sometimes when I have an assert() or unhandled exception and break into the debugger, the GLUT display window closes, but the console window remains open.They just cant be killed!!! They do not show up with Task manager, Process Explorer or any other tool, I cannot find the window handle using the Spy++ tool either. Worst thing is they prevent my system (Windows XP) from shutting down, I have to manually poweroff (and of course I have to run chkdsk on my drives and invariably it finds and fixes minor errors after bad shutdowns) Has anyone come across such an issue?

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• Dynamically allocated structure and casting.

  - by Simone Margaritelli

  Let's say I have a first structure like this: typedef struct { int ivalue; char cvalue; } Foo; And a second one: typedef struct { int ivalue; char cvalue; unsigned char some_data_block[0xFF]; } Bar; Now let's say I do the following: Foo *pfoo; Bar *pbar; pbar = new Bar; pfoo = (Foo *)pbar; delete pfoo; Now, when I call the delete operator, how much memory does it free? sizeof(int) + sizeof(char) Or sizeof(int) + sizeof(char) + sizeof(char) * 0xFF ? And if it's the first case due to the casting, is there any way to prevent this memory leak from happening? Note: please don't answer "use C++ polymorphism" or similar, I am using this method for a reason.

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