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• How can I LIMIT rows updates in MySQL if more than one table is involved?

  - by Taz

  I am trying to run an UPDATE query UPDATE ner.nerdataset, ner.shortabstracts SET ner.nerdataset.ShortAbstract=ner.shortabstracts.ShortAbstract WHERE ner.shortabstracts.Resource=ner.nerdataset.ResourceURI LIMIT 10; As MySQL does not allow the use of LIMIT when more than one table is involved in UPDATE what else can be done to limit this?

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• What cache concurrency strategy should be used for @ManyToOne fields

  - by Samuel

  What cache concurrency strategy should be used for @ManyToOne fields for a particular entity class. Would it make sense to use READ_ONLY instead of READ_WRITE, since these fields usually don't change after entity creation @ManyToOne(fetch = FetchType.LAZY) @Cache(usage = CacheConcurrencyStrategy.READ_WRITE) ... private User user;

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• Really fast C++ html parser

  - by Alessandro

  Hello to all, I'm doing a html text feature extractor in C++; the program need to be REALLY fast: i need to extract a this features in ms per html page and the memory usage needs to be good and finally unicode encoding well be nice. I know how difficult is to have all of this things, but i want a parser close to these things at least. Somebody have a suggestion?

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• Object or primitive type

  - by John

  Hi, Can someone explain to me the usage of Integer, Boolean etc in place of their primitive types in JAVA? I can't seem to grasp the advantages their are providing. They seem to create unnecessary problems of handling null values. Thanks!

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• DOM Storage and locks

  - by user535759

  Since DOM storage and its equivalencies persist in between tabs and windows, I've thought about using it for message passing. The problem is that fetch and store are different operations, and therefore not atomic. I have models that rely on UUID generation, conflict resolutions, and beaconing to do the small subset of what I need to do, but my real question is this: Since the local storage is a shared memory resource, what are the locking mechanisms available for mutual access?

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• ByPassing Google App Engine SDK to allow black listed classes

  - by ivanceras

  Is there a way to circumbent google app engine sdk to allow the usage of classes that are not present in the GAE JRE white list? I know the app that I would be building will not run in appspot, but at least in my development server, I need to access a postgresql database(java.net.socket.*) and generate some files(java.io.FileWriter) in my development server.

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• Is it good, that every PHP class implements a Singleton pattern

  - by Sbioko

  Hello, is it good, that every PHP class implements a Singleton pattern? I think, it will be less memory usage because of it. Is it right opinion? Thanks!

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• Strange iPhone application icon view in the iTunes's Applications section

  - by Spiel

  When I drag 'My iPhone App' application's file into iTunes it has proper view. Rounded corners and transparent background. Then I close iTunes and open it again. Corners are still rounded but... What has happened with the background? http://www.freeimagehosting.net/uploads/15fee337bc.png Icon is a project's resource file named 'iTunesArtwork' with dimension 512x512, PNG format.

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• Deep clone utility recomendation

  - by Supowski

  Is there any utility for deep cloning for java collections: Arrays Lists Maps NOTE: prefer some solution without usage of serialization, but with use of Object.clone() method. I can be sure that my custom object will implement clone() method and will use only java-standard classes that are cloneable...

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• Is it possible to know which java classes are doing disk IO operations

  - by willpowerforever

  I know the Resource Monitor in Windows7 can do such thing. But I need a monitor on other windows platforms. Any idea? Thanks.

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• Insert Image in richTextBoxControl

  - by Rahat

  What is the best way to insert an image programatically into the RichTextBox control in C# Winforms? If the method is using Clipboard then what is the optimized way to keep the Clipboard original data (i.e. the data state before placing my image on the Clipboard) available to be replaced after my temporary usage of Clipboard for inseting my image in Rich Text Box Control.

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• Regex.IsMatch vs string.Contains

  - by Pradeep

  Is there any difference in speed/memory usage for these two equivalent expressions: Regex.IsMatch(Message, "1000") Vs Message.Contains("1000") Any situations where one is better than other ?

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• Exception: Need to specify class name in environment or system property: java.naming.factory.initial

  - by DanDan

  When i run a JMS related application, i am encountering the following exception error. javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file: java.naming.factory.initial We are using Sun Application Server 9.1 Any idea what are we missing? I already tried adding the following but result still the same Properties env = new Properties(); env.put("java.naming.factory.initial","com.sun.jndi.cosnaming.CNCtxFactory"); Context ctx = new InitialContext(env);

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• Mobile Silverlight Applications

  - by snorlaks

  Hi, Have You got any tutorials, books, any good resources to start creating mobile games using silverlight ? Maybe any good resource on writing 2d games in silverlight for pc? Ay way do You think that its worth learning it or any other technology would be better and have probably shinier future ?

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• add array element to row returned from sql query

  - by bert

  I want to add an additional value into an array before passing it to json_encode function, but I can't get the syntax right. $result = db_query($query); // $row is a database query result resource while ($row = db_fetch_object($result)) { $stack[] = $row; // I am trying to 'inject' array element here $stack[]['x'] = "test"; } echo json_encode($stack);

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• Java: asterisk for loading classes

  - by EarthMind

  Is loading only the needed classes directly a good way of reducing the overall memory usage of a Java application? For example: import java.awt.Graphics; vs import java.awt.*;

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• Cast IEnumerable<Inherited> To IEnumerable<Base>

  - by david2342

  I'm trying to cast an IEnumerable of an inherited type to IEnumerable of base class. Have tried following: var test = resultFromDb.Cast<BookedResource>(); return test.ToList(); But getting error: You cannot convert these types. Linq to Entities only supports conversion primitive EDM-types. The classes involved look like this: public partial class HistoryBookedResource : BookedResource { } public partial class HistoryBookedResource { public int ResourceId { get; set; } public string DateFrom { get; set; } public string TimeFrom { get; set; } public string TimeTo { get; set; } } public partial class BookedResource { public int ResourceId { get; set; } public string DateFrom { get; set; } public string TimeFrom { get; set; } public string TimeTo { get; set; } } [MetadataType(typeof(BookedResourceMetaData))] public partial class BookedResource { } public class BookedResourceMetaData { [Required(ErrorMessage = "Resource id is Required")] [Range(0, int.MaxValue, ErrorMessage = "Resource id is must be an number")] public object ResourceId { get; set; } [Required(ErrorMessage = "Date is Required")] public object DateFrom { get; set; } [Required(ErrorMessage = "Time From is Required")] public object TimeFrom { get; set; } [Required(ErrorMessage = "Time to is Required")] public object TimeTo { get; set; } } The problem I'm trying to solve is to get records from table HistoryBookedResource and have the result in an IEnumerable<BookedResource> using Entity Framework and LINQ. UPDATE: When using the following the cast seams to work but when trying to loop with a foreach the data is lost. resultFromDb.ToList() as IEnumerable<BookedResource>; UPDATE 2: Im using entity frameworks generated model, model (edmx) is created from database, edmx include classes that reprecent the database tables. In database i have a history table for old BookedResource and it can happen that the user want to look at these and to get the old data from the database entity framework uses classes with the same name as the tables to receive data from db. So i receive the data from table HistoryBookedResource in HistoryBookedResource class. Because entity framework generate the partial classes with the properties i dont know if i can make them virtual and override. Any suggestions will be greatly appreciated.

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• How do I change the Mobile Country Code (MCC) in the Android Emulator?

  - by neu242

  My Android application needs to react differently to different Mobile Country Codes. It seems like it is hardcoded to mcc310 (US). I can read this value from TelephonyManager.getSimCountryIso() or by using a resource folder like res/values-mcc123/, but how do I set this value in the emulator?

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• Got a question I don't understand, can anyone make sense of it?

  - by user275074

  Question on a on-line resource paper: Create javascript so that the following methods produce the output listed next it. circle = new Circle(); console.log(circle.get_area()); // 3.141592653589793 circle.set_radius(10); console.log(circle.get_area()); // 314.1592653589793 console.log(circle); // the radius of my circle is 10 and it's area is 314.1592653589793 Can anyone understand what is being asked?

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• Why do exceptions usually have the suffix 'Exception' in the class name?

  - by Pheter

  It seems to me that it is rendundant information as the usage of the class will make it apparent that it is an exception. Furthermore, in PHP, the class must extend the Exception class so it will be apparent that it is an exception when looking at the class on its own. Despite this, developers usually apply the suffix 'Exception'. Why is this?

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• magento https error

  - by Ela

  when i made https enabled in secure url and front end secure url usage to yes in magento the checkout page becomes not found. Should i need to do anything more? where i have to place my ssl certificates. please help me in this

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• Free JVM profilers for websites

  - by 2Real

  I'm looking for a JVM profiler (preferably open source) so I can look at the heap and cpu usage of my personal website. I've used Lambda Probe, and I like it because it provides a web interface for my remote Unix computer that has no display. I was wondering what else is available Thanks,

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• Magentoo add slashes to file_name

  - by Kein

  I try extend an core class. But catch error: Warning: include( \\\\\\\\\\\\MyModule\Ajaxsearch\Model\Resource\Eav\Mysql4\Product\Collection \\\\\\\\\\.php) [function.include]: failed to open stream:... Why magento add slashes to addres? May be config error?

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• Does SharePoint 2010 Forms Authentication support 'Open with Explorer?

  - by Leo Wong

  I have successfully configured FBA in SharePoint 2010 with client integration enabled. I can edit the Word document with Office Word. The ‘Open with Explorer’ tool bar is enabled, but I get the error: \siteurl\DavWWWRoot\document is not accessible. you might not have permission to use this network resource. Is the 'Open with Explorer' option available with FBA? If yes, what are the missing settings?

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• Oracle for the SQL Server books?

  - by MattK

  I am looking for a reference for a SQL Server DBA who has to come up to speed on basic Oracle 11 DBA tasks: backup, recovery, user administration, etc. There seems to be some material on the web for the reverse: Oracle - SQL Server, but the only potentially useful resource I have found in a few searches is yet to be published: http://www.amazon.com/Oracle-Database-Administration-Microsoft-Osborne/dp/0071744312 Can anyone provide references to something currently available?

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