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• Does anyone know what happens if you do not implement iequtalable when using generic collections?

  - by ChloeRadshaw

  I asked a question here : http://stackoverflow.com/questions/2476793/when-to-use-iequatable-and-why about using Iequatable. From the msdn: The IEquatable(T) interface is used by generic collection objects such as Dictionary(TKey, TValue), List(T), and LinkedList(T) when testing for equality in such methods as Contains, IndexOf, LastIndexOf, and Remove. If you dont implement that interface what exactly happens?? Exception / default object equals / ref equals?

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• where i can find a image uploader like http://www.aurigma.com/Products/ImageUploader/ but free..?

  - by user292639

  ., i know that is a sticky question but everything get new version every days... so.. anyone? RoR or PHP using Java or Flash

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• php regex - can't find the error

  - by peirix

  Just one simple, specific question: I've got the string {var1}12345{var2}, and I want to get the variable names used. if (preg_match("/{([a-zA-Z0-9]*)}/g", $url, $matches)) { print_r($matches); } If I remove the global flag, it works, but I only get the first variable, as expected. Why isn't it working with a global flag? It works when I'm testing it with the Regex Tester

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• spring security filter-chain regex pattern

  - by lewap

  In my application which uses spring security I want to define two different areas both using their own spring security filter-chain. My question is: is it possible to define two regex expressions as follows: every path starting with /foobar/* every other path not starting with /foobar The important part here is that the second path should also match if somewhere within it, but not in the beginning, it cotains the /foobar/ string. Thanks

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• Is there any way to reboot and execute the VFD without ghost client?

  - by Ankiov Spetsnaz

  I don't know if this is the appropriate place for me to ask this question, since it's more for system maintenance, but I'm having difficult time finding any answers on Google. but is there any way to reboot and execute VFD, virtual floppy disk, without ghost client??

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• Can I install Netbeans while I already installed jdk.1.6.xx on same machine?

  - by newLearner.java

  Hi, I just about to learn Java programming. I already have jdk on my computer. Then, I found this Netbeans is quite popular and come with all I needs. My question is, will there be any conflict if I install full version of Netbeans while I already have jdk installed on same machine(windows vista)? I will appreciate your answers and advices, thanks.

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• ASP.NET - What happens when a HttpCookie expiration has been crossed

  - by user70192

  Hello, I am creating some cookies in my ASP.NET application. These cookies expire 10 minutes after they have been created. I follow the approach described on MSDN as shown here: http://msdn.microsoft.com/en-us/library/system.web.httpcookie.expires.aspx My question is, when a cookie "expires", what happens? Does the browser automatically delete the cookie? Is it our responsibility as developers to remove the cookies if they exist and have expired? Thank you,

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• Automatically reporting javascript errors to the developer

  - by Cine

  As most production environments we have setup something to send us a notification if there is an error in our web application. The problem is ofcourse that this only covers errors on the server side. My question to the community is: What are you doing about client side errors, especially in javascript? And what about other quality of service issues, such as slow processing and other things that might be due to the client machine?

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• Substitute for Iterator that is Serialization

  - by Mahmoud

  I'm working on a GWT project, and I have a bunch of Java classes that use Java Object Iterators on the server side. As I was reading through the internet...Iterators seem to not be serializable preventing me from sending them over to the client side from the server side. My question is is there an efficient way to serialize the iterator or use a substitute that might be serializable ? Many thanks!

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• Python named print?

  - by Mark

  I know it's a really simple question, but I have no idea how to google it. how can I do print '<a href="%s">%s</a>' % (my_url) So that my_url is used twice? I assume I have to "name" the %s and then use a dict in the params, but I'm not sure of the proper syntax? just FYI, I'm aware I can just use my_url twice in the params, but that's not the point :)

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• Drupal: assign block to a specific content type

  - by bert

  I made a customized template called node-mynode.tpl.php Whenever a node of type mynode is requested, then node-mynode.tpl.php is automatically used. However, now user wants to see a specific menu block in this case. Question: How can I assign a block to a specific content type? Hint: I have started to look at URL aliases with Pathauto. I suspect one solution may lie in this direction.

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• Using RangeValidator with byte

  - by KevDog

  This is the property declaration in question: [RangeValidator(1,RangeBoundaryType.Inclusive,255,RangeBoundaryType.Inclusive,MessageTemplate = "StartFlexibility is out of range")] public byte StartFlexibility { get; set; } When the validate method is called, a FormatException is thrown telling me that the value type needs to be Int32. How to fix, please?

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• What does the "=>" mean in asp.net mvc?

  - by quakkels

  Hey SO, I've got a pretty noob question for ya. I keep seeing this syntax: <%= Html.LabelFor(model => model.Email) %> ...and I have no idea what the = means. I thought it was syntax for linq2sql or ado.net entity framework but I'm just using straight ado.net. I don't understand why the VWD used that syntax when generating the Create form. What does = mean?

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• Objects With No Behavior

  - by Patrick Donovan

  I've been teaching myself object oriented programming and I'm thinking about a situation where I have an object "Transaction", that has quite a few properties to it like account, amount, date, currency, type, etc. I never plan to mutate these data points, and calculation logic will live in other classes. My question is, is it poor Python design to instantiate thousands of objects just to hold data? I find the data far easier to work with embedded in a class rather than trying to cram it into some combination of data structures.

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• Do autorelease methods always survive a whole method?

  - by Jan Hendrix

  Hi, If I'm correct then the releasing of the pool of autoreleased objects has something to do with the run loop.. I barely have an idea of what that 'run loop' is but my question is, is it possible that the object gets released before the end of the method is reached?

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• What is the best method to remove duplicate image files from your computer

  - by BioGeek

  I have a lot of duplicate image files on my Windows computer, in different subfolders and with different filenames. What Python script or freeware program would you recommend for removing the duplictes? (I've read this similar question, but the poster there is asking about visual duplicates with differing filesizes. Mine are exact duplicates with different filenames.)

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• How to get visible size of DisplayObject with perspective projection

  - by Ain

  The following is entirely a math question. As we know, PerspectiveProjection delivers perspective transformations in 3D represented by the interdependent values of fieldOfView and focalLength according to the following formula: focalLength = stageWidth/2 * (cos(fieldOfView/2) / sin(fieldOfView/2) Bjørn Gunnar Staal has prepared a good image to illustrate the situation. Q: How to get the visible on-screen size of the DisplayObject (Cube on the above-linked image) to which PerspectiveProjection has been applied?

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• Where should configuration be placed?

  - by James P.

  I have an application structured as follows: dao domain main services utils I've made a class that reads the application configuration from an XML file. The question is where should it be placed? In the utilities package?

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• How do you efficiently generate a list of K non-repeating integers between 0 and an upper bound N

  - by tucuxi

  The question gives all necessary data: what is an efficient algorithm to generate a sequence of K non-repeating integers within a given interval. The trivial algorithm (generating random numbers and, before adding them to the sequence, looking them up to see if they were already there) is very expensive if K is large and near enough to N. The algorithm provided here seems more complicated than necessary, and requires some implementation. I've just found another algorithm that seems to do the job fine, as long as you know all the relevant parameters, in a single pass.

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• Is there any performance difference between a SQL "IN" statement versus using "OR"?

  - by Mark Kadlec

  Thought I would ask the knowledgeable StackOverflow community a question that was on my mind today and I can't seem to find an answer. Is there any performance difference or advantage between an "IN" or using "OR"? Ie. Is SELECT type FROM types WHERE typecat IN ('abc', 'def') better than SELECT type FROM types WHERE typecat = 'abc' OR typecat = 'def'

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• How a thread should close itself in Java?

  - by Roman

  This is a short question. At some point my thread understand that it should suicide. What is the best way to do it: Thread.currentThread().interrupt(); return; By the way, why in the first case we need to use currentThread? Is Thread does not refer to the current thread?

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• Java, swt and web

  - by Jordan Borisov

  My question is how to retrieve all images from a site. I want to make desktop application which show images of a cars received by a web site.

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• What are some good programming challenge websites?

  - by Martin

  I used to be a member of +Ma's Reversing, and later became a member of Caesum's Electrica. Recently I've played Bright Shadows. Are there other good sites for a challenge? Question reopened; not a duplicate. Similar, yes, but slightly different. Related: http://stackoverflow.com/questions/24692/where-can-you-find-funeducational-programming-challenges

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• SQL Injection When Using MySQLi Prepared Statements

  - by Sev

  If all that is used to do any and all database queries is MySQLi prepared statements with bound parameters in a web-app, is sql injection still possible? Notes I know that there are other forms of attack other than sql-injection, but my question is specific to sql-injection attacks on that particular web application only.

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• What do you use to write Go

  - by LantisGaius

  I know its a bit too early, but I've been trying out Go (Google's Programming Language) and its kindof annoying to write code in gedit. So, my question: What do you use to experiment with Go?

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