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• Validation Rules in Webtesting using VS2010

  - by Lexipain

  I'm creating a simple webtest (Recorded Web performance test) that makes sure that a correct error message is displayed if i try to login with a username that does not exist. However, there are two types of error messages that handle incorrect login info. One is for all the usernames that do not exist and therefore are not allowed, and the other is for usernames that start with the letter 'Q' (which is not allowed for a few reasons). Now what i want to do is use the 'Find Text' validation rule and the test should pass if ONE of the 'Find Text' parameters is found, and in that case i want the second 'Find Text' rule to be ignored so it doesn't fail the test. In other words the test should always pass if one of the 'Find Test' rules is found. How can i achieve that? Is there some if,else statement that i can use for this?

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• MySql Friend of my friends and Friend of my of my Friends of my Friends

  - by user1907522

  i have a problem with mysql query, and can't get it done in any way. I already checked the other topics, but can't get any of the solutions to work in my case. I have 2 tables, one is users id, name, email.... and second for friends is named friends :) user1_id, user2_id now i need to get from the database all of the user info for friends of my friends, and next level friends, the Friend of my of my Friends of my Friends, those should be 2 separate queries. Of course the search should exclude me, and be distinct. Please help.

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• Increase the height of Flex Container dynamically and introduce scrollbar on the browser

  - by shruti

  Hi, I am trying to increase the height of container with increase in the number of contents inside the container. Like in my case i m using tileList inside tabNavigator , when I put contents inside the tileList, the height of tileList does not increase beyond vertical height of the viewport. It puts scrollbar on the container. I want to increase the height of an flex container with increase in the contents and introduce scrollbar on the browser with increase in contents in the flex container. Could anybody please suggest me how I could achieve this. Thanks in advance.

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• Equivalent of LaTeX's \label and \ref in HTML.

  - by dreeves

  I have an FAQ in HTML (example) in which the questions refer to each other a lot. That means whenever we insert/delete/rearrange the questions, the numbering changes. LaTeX solves this very elegantly with \label and \ref -- you give items simple tags and LaTeX worries about converting to numbers in the final document. How do people deal with that in HTML? ADDED: Note that this is no problem if you don't have to actually refer to items by number, in which case you can set a tag with <a name="foo"> and then link to it with <a href="#foo">some non-numerical way to refer to foo</a>. But I'm assuming "foo" has some auto-generated number, say from an <ol> list, and I want to use that number to refer to and link to it.

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• Google App Engine and Git best practices

  - by systempuntoout

  I'm developing a small pet project on Google App Engine and i would like to keep code under source control using github; this will allow a friend of mine to checkout and modify the sources. I just have a directory with all sources (call it PetProject) and Google App Engine development server points to that directory. Is it correct to create a repo directly from PetProject directory or is it preferable to create a second directory mirroring the develop PetProject directory? In the latter case, anytime my friend will release something new, i need to pull fetch from Git copying the modified files to the develop PetProject directory. If i decide to keep the repo inside the develop directory, skipping .git on Gae yaml is enough? What are the best practices here?

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• Invoke a subclass method of an anonymous class

  - by arjacsoh

  I am trying right now to dig into anonymous classes and one question was just arised I 'd prefer not to refer to much details and to pose my question straightforward: How can I invoke the method sizzle() in the following anonymous class: public class Popcorn { public void pop() { System.out.println("popcorn"); } } class Food { Popcorn p = new Popcorn() { public void sizzle() { System.out.println("anonymous sizzling popcorn"); } public void pop() { System.out.println("anonymous popcorn"); } }; public void popIt() { p.pop(); // OK, Popcorn has a pop() method p.sizzle(); // Not Legal! Popcorn does not have sizzle() } } It is known and definite in polymorphism rules that a refernce of a superclass cannot invoke methods of subclass without downcasting (even if it refers to an object of the given subclass). However in the above case what is the "key" to invoke the sizzle() method?

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• Zip Code Radius Search question...

  - by KnockKnockWhosThere

  I'm wondering if it's possible to find all points by longitude and latitude within X radius of one point? So, if I provide a latitude/longitude of -76.0000, 38.0000, is it possible to simply find all the possible coordinates within (for example) a 10 mile radius of that? I know that there's a way to calculate the distance between two points, which is why I'm not clear as to whether this is possible... Because, it seems like you need to know the center coordinates (-76 and 38 in this case) as well as the coordinates of every other point in order to determine whether it falls within the specified radius... Is that right?

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• What's the simplest way to ask for user input through Modal in Win Form

  - by Refracted Paladin

  What is the simplest way to implement a Modal(popup) MessageBox that allows a custom value to be entered and returned. In my case, a String. Maybe I am over thinking this but I figured I'd ask. I plan to just create a new Form. Add a label, a textbox, two buttons. Assign the textbox to a property and from my main form call a ShowDialog() on it. Will I be able to still access the property that way or should I somehow return the value? Is this a decent way of doing this?

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• Flex: Prevent scrollbar from covering content when automatically displayed.

  - by Yaba

  I have a canvas in Flex that shall be able only to be scrolled in vertical direction, so I set the attributes of the canvas as follows: verticalScrollPolicy="auto" horizontalScrollPolicy="off" The problem here is that the vertical scrollbar covers the content when it appears - altough there is enough horizontal room left. I would have expected that the content size would have been automatically adjusted. When setting the vertical scroll policy to "on", no content is covered also. In case I set both scroll policies to 'auto' I also get a horizontal scroll bar just for scrolling to the area that is covered by the vertical scroll bar. Is there a workaround how I can relayout the content of the canvas when the vertical scroll bar is shown so that it does not cover any content?

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• Using persistent and non-persistent connection together in a PHP MySQL app

  - by cappuccino

  There are parts of my app where a persistent connection is required, in particular the parts where every hour maybe 30,000 select requests are made by many different users, this is causing my mysql server to max out on the 100 connection limit, and i really don't want to increase it since 100 connections already seems like alot. So for the parts of the application where reading and selecting is the case I want to switch to persistent connections. The other parts where data is being modified is usually done through a transaction, and the general rule is never to use persistent connections for transactions according to the php documentation. So I would like to keep this on non-persistent connections. My question is, am i able to use persistent and non-persistent connections together in the same app, the same script etc? I am using PHP 5.2+, MySQL 5+ (InnoDB tables) and the Zend Framework 10.6+

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• Basic question about std::vector instantiation

  - by recipriversexclusion

  This looks simple but I am confused: The way I create a vector of hundred, say, ints is std::vector<int> *pVect = new std::vector<int>(100); However, looking at std::vector's documentation I see that its constructor is of the form explicit vector ( size_type n, const T& value= T(), const Allocator& = Allocator() ); So, how does the previous one work? Does new call the constructor with an initialization value obtained from the default constructor? If that is the case, would std::vector<int, my_allocator> *pVect = new std::vector<int>(100, my_allocator); where I pass my own allocator, also work?

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• jQuery Validation Engine with Mime

  - by Diego Pucci

  I have this custom rule with tje jQuery validation Engine: "validateMIME": { "func": function(field, rules, i, options){ var fileInput = field[0].files[0]; var MimeFilter = new RegExp(rules[3],'i'); if (fileInput) { return MimeFilter.test(fileInput.type); } else { return true;} }, "alertText": "* Estensione non supportata" }, The problem is that this is working ONLY if the field is required. But in my case the field is not required, but if filled then the Mime type needs to be checked. How do I edit this function to work with non required fields? what's wrong with it? Thanks

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• What is the proper way to resolve Eclipse warning "isn't parameterized"?

  - by Morinar

  I'm trying to clean up some warnings in some old Java code (in Eclipse), and I'm unsure what the proper thing to do is in this case. The block looks more or less like this: Transferable content = getToolkit().getSystemClipboard().getContents( null ); java.util.List clipboardFileList = null; if( content.isDataFlavorSupported( DataFlavor.javaFileListFlavor ) ) { try { clipboardFileList = (java.util.List)content.getTransferData( DataFlavor.javaFileListFlavor); } /* Do other crap, etc. */ } The List generates a warning as it isn't parameterized, however, if I parameterize it with <File>, which I'm pretty sure is what it requires, it complains that it can't convert from Object to List<File>. I could merely suppress the unchecked warning for the function, but would prefer to avoid that if there is a "good" solution. Thoughts?

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• Amazon EC2 Load Balancer: Defending against DoS attack?

  - by netvope

  We usually blacklist IPs address with iptables. But in Amazon EC2, if a connection goes through the Elastic Load Balancer, the remote address will be replaced by the load balancer's address, rendering iptables useless. In the case for HTTP, apparently the only way to find out the real remote address is to look at the HTTP header HTTP_X_FORWARDED_FOR. To me, blocking IPs at the web application level is not an effective way. What is the best practice to defend against DoS attack in this scenario? In this article, someone suggested that we can replace Elastic Load Balancer with HAProxy. However, there are certain disadvantages in doing this, and I'm trying to see if there is any better alternatives.

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• How to use Fluent style syntactic sugar with c# property declaration

  - by Thomas

  i never use fluent style code before. so first time i tried to develop Fluent style with c# property declaration but getting error. can any one help me. public class MailTemplate { string _MailBody = ""; public MailTemplate MailBody { get { return _MailBody; } set { _MailBody = value ; } } string _Subject = ""; public MailTemplate Subject { get { return _Subject; } set { _Subject = value; } } string _MailFrom = ""; public MailTemplate MailFrom { get { return _MailFrom; } set { _MailFrom = value; } } } please help me how could assign or initialize mail body and later also can read with same property name. i think proeprty can not be use in case of fluent style development. need some light here. thanks

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• Using boost.python to import a method with opencv calls but failing due to symbols not being found a

  - by nmz787

  So I don't have the code right now, as I am not home... but i used the boost library for python in C++ to allow python to access a function called something like loadImageIntoMainWindow(string filepath) in the C++ source code the method calls opencv methods that are imported at the top of the file, I included opencv in my Jamroot file, and also found a way to compile and link manually on the command line... in either case when I run my python file it complains that the symbols aren't found for the first function call to an opencv method... I will update as soon as I get home with the C++, the command line compilation lines, the Jamroot, and the python files

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• How to judge the relative efficiency of algorithms given runtimes as functions of 'n'?

  - by Lopa

  Consider two algorithms A and B which solve the same problem, and have time complexities (in terms of the number of elementary operations they perform) given respectively by a(n) = 9n+6 b(n) = 2(n^2)+1 (i) Which algorithm is the best asymptotically? (ii) Which is the best for small input sizes n, and for what values of n is this the case? (You may assume where necessary that n0.) i think its 9n+6. guys could you please help me with whether its right or wrong?? and whats the answer for part b. what exactly do they want?

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• Strange thing about .NET 4.0 filesystem enumeration functionality

  - by codymanix

  I just read a page of "Whats new .NET Framework 4.0". I have trouble understanding the last paragraph: To remove open handles on enumerated directories or files Create a custom method (or function in Visual Basic) to contain your enumeration code. Apply the MethodImplAttribute attribute with the NoInlining option to the new method. For example: [MethodImplAttribute(MethodImplOptions.NoInlining)] Private void Enumerate() Include the following method calls, to run after your enumeration code: * The GC.Collect() method (no parameters). * The GC.WaitForPendingFinalizers() method. Why the attribute NoInlining? What harm would inlining do here? Why call the garbage collector manually, why not making the enumerator implement IDisposable in the first place? I suspect they use FindFirstFile()/FindNextFile() API calls for the imlementation, so FindClose() has to be called in any case if the enumeration is done.

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• Smooth screen recording software

  - by user85658

  Hello everyone, I am preparing for my senior thesis presentation. I'd like to back myself up in case there is no internet connection available. Therefore I want to record a video showing the functionality of my software. I have tried Camtasia but all the smooth and slick animations I've created, do not look that appealing. Is there an alternative. Something that will capture my screen 1 to 1, or near that. Camtasia is great, but it does not serve the purpose. Any help would be greatly appreciated. Best Regards, Kiril

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• System.WIndows.Application static members are thread safe?

  - by Lirik

  The Application static members are supposed to be thread safe: The public static (Shared in Visual Basic) members of this type are thread safe. In addition, the FindResource and TryFindResource methods and the Properties and Resources properties are thread safe.1 How much can we trust that statement in a multithreaded environment when calling static member methods of System.Windows.Application? Update: It's all in reference to this question: http://stackoverflow.com/questions/2463822/threading-errors-with-application-loadcomponent-key-already-exists/2463866#2463866 I never thought I'd see a real bug in the library, but this must be the day for me... that question seems to show a genuine bug. Usually it's "user error," but this doesn't seem to be the case.

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• UINavigationController Right button

  I am unable to set any property of parentController (which is always a UINavigationController in my case) from child views. e.g. I want to add a button on the navigation bar using following code: UINavigationController* parentController = (UINavigationController)self.parentViewController; UIBarButtonItem *addButton = [[[UIBarButtonItem alloc] initWithTitle:@"Something" style:UIBarButtonItemStyleBordered target:self action:@selector(doSomething)] autorelease]; [_parentController.navigationItem setRightBarButtonItem:addButton animated:YES]; This code runs perfectly without errors but I can't see any button added to the navigation bar. Thanks in advance.

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• Compound dictionary keys

  - by John Keyes

  I have a particular case where using compound dictionary keys would make a task easier. I have a working solution, but feel it is inelegant. How would you do it? context = { 'database': { 'port': 9990, 'users': ['number2', 'dr_evil'] }, 'admins': ['[email protected]', '[email protected]'], 'domain.name': 'virtucon.com' } def getitem(key, context): if hasattr(key, 'upper') and key in context: return context[key] keys = key if hasattr(key, 'pop') else key.split('.') k = keys.pop(0) if keys: try: return getitem(keys, context[k]) except KeyError, e: raise KeyError(key) if hasattr(context, 'count'): k = int(k) return context[k] if __name__ == "__main__": print getitem('database', context) print getitem('database.port', context) print getitem('database.users.0', context) print getitem('admins', context) print getitem('domain.name', context) try: getitem('database.nosuchkey', context) except KeyError, e: print "Error:", e Thanks.

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• How should I rewrite my code to make it amenable to unittesting?

  - by justin

  I've been trying to get started with unit-testing while working on a little cli program. My program basically parses the command line arguments and options, and decides which function to call. Each of the functions performs some operation on a database. So, for instance, I might have a create function: def create(self, opts, args): #I've left out the error handling. strtime = datetime.datetime.now().strftime("%D %H:%M") vals = (strtime, opts.message, opts.keywords, False) self.execute("insert into mytable values (?, ?, ?, ?)", vals) self.commit() Should my test case call this function, then execute the select sql to check that the row was entered? That sounds reasonable, but also makes the tests more difficult to maintain. Would you rewrite the function to return something and check for the return value? Thanks

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• Can someone explain me implicit parameters in Scala?

  - by Oscar Reyes

  And more specifically how does the BigInt works for convert int to BigInt? In the source code it reads: ... implicit def int2bigInt(i: Int): BigInt = apply(i) ... How is this code invoked? I can understand how this other sample: "Date literals" works. In. val christmas = 24 Dec 2010 Defined by: implicit def dateLiterals(date: Int) = new { import java.util.Date def Dec(year: Int) = new Date(year, 11, date) } When int get's passed the message Dec with an int as parameter, the system looks for another method that can handle the request, in this case Dec(year:Int) Q1. Am I right in my understanding of Date literals? Q2. How does it apply to BigInt? Thanks

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• Thread safe lockfree mutual ByteArray queue

  - by user313421

  A byte stream should be transferred and there is one producer thread and a consumer one. Speed of producer is higher than consumer most of the time, and I need enough buffered data for QoS of my application. I read about my problem and there are solutions like shared buffer, PipeStream .NET class ... This class is going to be instantiated many times on server so I need and optimized solution. Is it good idea to use a Queue of ByteArray ? If yes, I'll use an optimization algorithm to guess the Queue size and each ByteArray capacity and theoretically it fits my case. If no, I what's the best approach ? Please let me know if there's a good lock free thread safe implementation of ByteArray Queue in C# or VB. Thanks in advance

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