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• Neat way of calling InvokeRequired and BeginInvoke

  - by ho

  I seem to remember seeing some neat way of calling InvokeRequired and BeginInvoke to avoid repeating too much code in every event handler but I can't remember what that was. So does anyone know a neat way of writing that code?

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• Neat way of calling InvokeRequired and Invoke

  - by ho

  I seem to remember seeing some neat way of calling InvokeRequired and Invoke to avoid repeating too much code in every event handler but I can't remember what that was. So does anyone know a neat way of writing that code? Preferably for VB.Net 2005.

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• how to store data crawled from website

  - by Richard

  I want to crawl a website and store the content on my computer for later analysis. However my OS file system has a limit on the number of sub directories, meaning storing the original folder structure is not going to work. Suggestions? Map the URL to some filename so can store flatly? Or just shove it in a database like sqlite to avoid file system limitations?

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• DRY up Ruby ternary

  - by Reed G. Law

  I often have a situation where I want to do some conditional logic and then return a part of the condition. How can I do this without repeating the part of the condition in the true or false expression? For example: ClassName.method.blank? ? false : ClassName.method Is there any way to avoid repeating ClassName.method? Here is a real-world example: PROFESSIONAL_ROLES.key(self.professional_role).nil? ? 948460516 : PROFESSIONAL_ROLES.key(self.professional_role)

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• Is the "lock" statement in C# time-consuming?

  - by markattwood

  I have a method which has been called many times by other methods to hash data. Inside the method, some lock statements are used. Could you please let me know whether the lock statement is time-consuming and what is the best way to improve it. P/S: I have been finding a way to avoid using the lock statement in this method.

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• Field validators in asp.net

  - by user279521

  Is it possible to have "Required Field Validator" controls to validate more than one field (example I have 12 textboxes that are required. I want to try an avoid having 12 RFV controls.

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• iPhone Coredata saving error

  - by satyam

  I'm trying to create core data application. Some times when trying to save data, i'm seeing following error: Error: NSInvalidArgumentException, Reason: * -_referenceData64 only defined for abstract class. Define -[NSTemporaryObjectID_default _referenceData64]!, Description: * -_referenceData64 only defined for abstract class. Define -[NSTemporaryObjectID_default _referenceData64]! I didn't understand why this error is coming and how to avoid it. Can some one help me please.

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• Passing DataSource object from a servlet to a JavaBean

  - by Slavko

  I like the ease of using @Resource annotation to get a DataSource, but as far as I know, it's not possible to use it in a regular JavaBean. Would it be considered a bad practice if I pass the DataSource object from a servlet to a bean along with the other data to avoid having that lookup code in the bean?

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• Per-character-set font size in Firefox not working?

  - by Coderer

  Firefox has a setting (Preferences - Content - Fonts & Colors - Advanced) that is supposed to let you set font preferences for different character sets. I've tried setting larger minimum font sizes for some non-Western character sets (I'm still learning, and have to see extra detail to tell them apart!) and nothing seems to happen. For example, if there's Hangul on a page (like this one), it will show in the same size as the Latin characters around it, even if I set "minimum font size" to 24. Am I misunderstanding how that setting is supposed to work, or does it just not do anything? Is there any other way to blow up only non-Western characters while leaving the letters I know how to read intact?

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• Java Download Concurrent Data

  - by xger86x

  Hi, i'm developing an app which download map tiles around different places in a city. To do this, i have one thread for each place in which i select the tiles and create a thread to download each. Well, the question is how to avoid creating a thread for a tile that already exists in the thread pool. Should not just check if the file exists, since it is possible that the thread for that tile already exists (other place already need that tile) but the file has not been created- Any idea? Thanks

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• What IT certification is most valuable without job experience? [closed]

  - by Eric Wilson

  I'm trying to change vocations towards IT. I'm learning JAVA, SQL, and other things, but I have no job experience or formal education (other than a math Ph.D.) I know that certifications only go so far, but I was curious which certifications might be the most valuable for a first IT job? To clarify my question: Oracle certification + Zero Oracle experience = 0% chance of Oracle DBA job. Perhaps, though: [foobar certification] + Zero IT job experience = nonzero chance of entry IT job? Please give specific suggestions of certifications that you would consider relevant towards an entry-level IT job.

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• An error has Occurred During Report proccesing

  - by Erez

  hi , When I'm running the report I'm getting that message above. The Report Works fine when I press the "Run Report" Button but I want also to avoid that annoying message that appears when the page loads. I've tried to set the report viewer control to Enable = false; and only after hitting the button to Enable = true; but it didn't work.

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• Apache configuration file visualization/testing

  - by Matt Holgate

  Is there a tool available (or a debug mode built into Apache) that will allow me to interactively test and explain an Apache configuration for a given request? In particular, I'd like to be able to see which directives will apply when requesting a specific URL. For example, the output for the URL http://myserver.com/foo/bar/bar.html might look something like: Allow from 192.168.0.3 <-- From <Location /foo/bar> in myserver.com vhost Require valid user <-- From <Directory /var/www/foo> in global configuration Satisfy any <-- From <File bar.html> in global configuration [Background: why do I want this? The apache merging rules for configuration directives are quite complex to get right. It would be great to have a tool which allows you to check that your rules are doing exactly what you want, and would be a good learning tool]. If there isn't such a tool, is there a debug option in Apache that will log such information for each incoming request?

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• Is there a way to make eclipse report a general "catch (Exception e)" as an error/warning (in java)?

  - by Rog

  I'm trying to encourage a best practice of not catching general exceptions in Java code. eg: try { ... } catch (Exception e) { // bad! ... } Is there a way to flag this as an error/warning in Eclipse? I know PMD picks this up, but I'd rather avoid integrating it into everyone's build environment at the moment.

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• Odd behaviour with scala method syntax

  - by Ceilingfish

  Hi chaps, I hit a bit of a quirk of scala's syntax I don't really understand object Board { def getObjectAt(x:Int, y:Int):Placeable = return locations(x)(y) } works fine. But object Board { def getObjectAt(x:Int, y:Int):Placeable { return locations(x)(y) } } returns the error Board.scala:8: error: illegal start of declaration return locations(x)(y) I found some stuff that says the second form convinces the scala compiler you're trying to specify an expansion to the return type Placeable. Is there a way I can fix this, or should I just avoid specifying a return type here?

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• Which user account to assign as owner when attaching an SQL Server database?

  - by FreshCode

  This is a simple database security & performance question, but I've always used either a special user (eg. mydbuser), or Windows' built-in NETWORK SECURITY account as the owner when attaching databases to my SQL Server instances. When deploying my database to a production server, is there a specific user I should stick to or avoid? I would think that using an account with a set password could open the database up to a potential security issue.

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• Why do I get so many errors building my Android project with Ant?

  - by synic

  Now that I sort of know my way around the SDK/API, I've switched from Eclipse back to my favorite text editor, which means I have to use ant to build my project, however: It seems every other time I compile the project, a lot of drawables get corrupted, resources lose their ids (resulting in NPEs in the code), or classes throw "Verify Errors". The only way to fix this is by removing the bin and gen folders, and recompiling, which is obviously annoying. Is there any way to avoid this? btw, I'm using ant 1.7.1, java version "1.6.0_20"

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• Getting started with unit testing in VS2010?

  - by Herb Caudill

  I'm new to both unit testing and Visual Studio 2010 (just upgraded from 2008). I'm interested in using VS2010's new built-in unit testing tools, but would like to get the lay of the land first. I haven't been able to find any resources or tutorials on unit testing with VS2010 specifically - has anyone found a good walk-through? I'm also open to persuasion that we should stick with NUnit or the like, if anyone knows a reason to avoid the built-in tools.

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• GDI+ Problem drawing a table

  - by Emanuel

  I try to draw a table on a panel in C# Windows Form by using GDI+. The problem is that when I minimize the application, my drawing disappears. How can I avoid this and why acting this way?

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• No IO exception reported for socket operation when the interface is removed

  - by user352536

  The wifi network is connected, the application setup a socket connection and exchange data with the remote server. But when turn off the wifi, the inteface is removed, while socket operation read/write on this socket is still like normal, no any IO exception reported. The application has to do some extra checking to avoid waiting for the data forever. Is this the normal case for Android design? Is there any plan to fix it?

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• Is it bad practice to allow dots in SVN tags/branches' names?

  - by abatishchev

  In my SVN repository tags are listed by version where name contains dots. e.g. 0.10 or 0.12.1 branches are named like proj-0.24-rc In the same time, for example in Mono project branches has not dots. Is it some practice to avoid dots? Could it be treated like extension delimiter (by web server where repository is been served), etc?

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• JQuery: can I submit values from inputs that aren't in a form?

  - by Alvaro

  Simple as that: I have some inputs that are rendered inside another form element, but I want to submit then individually. I tried "serializing" the div that contains them, but it didn't work. Is there an easy way to do this? My code: var form = $("#my_div"); var get_data = $(form).serialize(); /* Get #my_div inputs value */ $.get(self.url_form_rendering, get_data, function (data){ /* handle server response */ }) Serialize returns "", any ideas that don't involve redesigning the layout to avoid form nesting?

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• mySQL: Knowing when to UPDATE and when to INSERT?

  - by thedp

  Hello, I'm still quite a mySQL newbie, so I would like to do this right to avoid future mishaps. What is the right way to detect when do I need to UPDATE an entry in a table or INSERT a new one? Thank you.

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• Overloading + to add two pointers

  - by iAdam

  I have a String class and I want to overload + to add two String* pointers. something like this doesn't work: String* operator+(String* s1, String* s2); Is there any way to avoid passing by reference. Consider this example: String* s1 = new String("Hello"); String* s2 = new String("World"); String* s3 = s1 + s2; I need this kind of addition to work. Please suggest.

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• VS2010 Database Compare. How do you create a *.DBSchema extensioned file?

  - by George

  I'd like to take a snapshot of my database, make some changes and then use the db compare functionality to identify the changes, and who knows, maybe even generate scripts to make the change. I'd like to avoid having to backup the current db and restore it as a separate db just to have a "before" snapshot. I'm guessing I shouldn't have to. Obsviously, I'm clueless about db projects and am looking to be pointed in the right direction. ty!

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