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  • java table question

    - by kate
    hello i have a issue and i want your help i have a table which is called citylink[10][2] and i want to make a check before i move on in my code if it's full to continue if it's not to break!!i know that i should use an if loop but i don't know what to put inside it!!

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  • When to retain a "delegate"

    - by Jose
    I know that in Objective-C you should never retain your delegates because it may cause a retain-cycle, however, how do you know the difference between a delegate and a non-delegate object ? Can't it be said that just sending a message to any object is delegating work to that object ?

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  • What is WCS? Please explain

    - by priyanka.bangalore
    I want to know from basic to advance about WCS. Actually I got this term from a job consultant and after a bit googling I found that it is Web Coverage Service. Is is correct or it has got some other interpretation? And how to use this in .Net? Kindly let me know Thanks in advance

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  • 20 1TB drives vs. 10 2TB drives in RAID5/6 server

    - by Hunter
    Hi everyone, I will be setting up a server at work and I need some advice on some details. The setup will be one blade-type server (8-core, 16GB RAM) with two subsystems - one for the main storage the other to back it up. I'm shooting for a 20TB array (I know it'll be less after formatting and parity drives). So is there any advantage one way or the other with either 20 1TB drives or 10 2TB drives? I'm not sure right now how many controllers I should have either (in the quote I have is a dual-port controller). I would think two controllers for a server of this size would be a better choice than the dual-port controller (but I really don't know). And would an array of this size have any performance issues in RAID 5 or 6 (I know RAID 5 or 6 are "slower" because of all the parity calculations). Also, these will be either WD RE3 (1TB) or the RE4 (2TB). Oh, also, for the backup array would it be ok to use the WD 2TB green drives (also in RAID5 or 6)?

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  • Which work process in my company should I Improve first?

    - by shoren
    I've just started to work in a new place, and I see several things they do that I find really terrible, and I want to know if they are indeed so wrong, or I am just too strict. Please let me know if my criticism is in place, and your opinion on which problem is the worst and should be fixed first. The developement is all in Java. 1) Not using svnignore. This means svn stat can't be used, and developers forget to add files and break the build. 2) Generated files go to same folders as committed files. Can't use simple maven clean, have to find them one by one. Maven clean doesn't remove all of them. 3) Not fixing IDE analyze warnings. Analyze code returns about 5,000 warning, of many different kinds. 4) Not following conventions: spring beans names sometimes start with uppercase and sometimes not, ant properties sometimes with underline and sometimes with dots delimiter, etc. 5) Incremental build takes 6 minutes, even when nothing is changed. 6) Developers only use remote debug, and don't know how to run the Tomcat server internally from the IDE. 7) Developers always restart the server after every compilation, instead of dynamically reloading the class and saving the server's state. It takes them at least 10 minutes to start checking any change in the code. 8) Developers only compile from command line. When there are compilation errors, they manually open the file and go the the problematic line. 9) A complete mess in project dependencies. Over 200 open sources are depended on, and no one knows what is indeed needed and why. They do know that not all dependencies are necessary. 10) Mixing Maven and Ant in a way that disables the benefits of both. In one case, even dependency checks are not done by Maven. 11) Not using generics properly. 12) Developers don't use Subversion integration with IDE (Eclipse, Intellij Idea). What do you think? Where should I start? Is any of the things I mentioned not really a problem?

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  • What does plus sign does here in string?

    - by Thanga
    I would like to know, what is the difference between two statements, these may be simple String ss="myname"; char[] charArray = ss.toCharArray(); for ( char character : charArray ) { System.out.println( +character );//Statements are here what does plus refers here: System.out.println( character ); //Statements are here: } I got the output for the code no errors but little doubt on how it works? What happens here? If you would down vote let me know the reason please , Thanks in advance

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  • Solr automatic startup script

    - by Camran
    I have followed this tutorial: http://wiki.apache.org/solr/SolrJetty But I cant get it working. I don't know what to put in the etc/defaults/jetty file Does anybody know how to configure this? I have Ubuntu 9 Server. Thanks

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  • MySQL> Selecting from more tables (with same columns) without UNION

    - by Petr
    Hi, It is probably pretty simple but I cannot figure it out: Say I have tables A and B both with the same columns. I need to do SELECT * FROM A,B without having results merged into one row. I.e. when each table has 2 rows, I need the result to have 4 rows. EDIT: I know about JOIN but dont know how to join the tables without predicate. I need merge them. Thanks

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  • C struct memory layout?

    - by Eonil
    I have C# background. Very newbie to low level language like C. In C#, memory layout by compiler by default, and I have to specify some special attribute to override this behavior for exact layout. As I know, C does not re-align by default. But I heard there's a little re-aligning behavior which very hard to find. Can I know about C's memory layout behavior? (what should be re-aligned and not)

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  • Undocumented AS3 API

    - by grayger
    Recently, I happen to know MovieClip.addFrameScript() which is very useful, otherwise timeline script should be coded in fla. Do you know any other undocumented Actionscript3 API?

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  • Why wait should always be in synchronized block

    - by diy
    Hi gents, We all know that in order to invoke Object.wait() , this call must be placed in synchronized block,otherwise,IllegalMonitorStateException is thrown.But what's the reason for making this restriction?I know that wait() releases the monitor, but why do we need to explicitly acquire the monitor by making particular block synchronized and then release the monitor by calling wait() ? What is the potential damage if it was possible to invoke wait() outside synch block, retaining it's semantics - suspending the caller thread ? Thanks in advance

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  • Walk me through the Linux log files (please)

    - by Andy
    Hey all, I just tried loading a 2MB file in gedit and it silently died on me. I was wondering if anything might appear in a log file that might help me diagnose this: I checked syslog and found out it segfaulted. While doing this I realised that I don't really know anything about how logging is organised on *nix machines. All I know at the mo is Logs are typically stored in /var/log/... is there anywhere else that I should know about? I'm familiar with application specific logs, such as apache's. I understand that dmesg is the bootup log, and syslog is a general system log... is that right? So would someone mind taking me through the most useful logs? Are the two logs I mention in the final point the only general logs? And what are the funky numbers at the start of lines in dmesg? Seconds since startup? Please include anything in your answers that you think would improve my understanding here and help me track down anomalies! TIA Andy

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  • Save file as - dialog box with dynamic data

    - by MichaelMcCabe
    I know that this question is quite common, but its specifics are stumping me. I have an "export" button which I want to take a load of data generated, create a CSV file, then pop up a Save File As dialog box, to save that file on their local machine. The name of this file is dynamic, also. I know how to make the CSV file, but how do I then pop up a box on the client side to let the user download it? I am using JSP with Struts

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  • How to use OpenID+OAuth in my website?

    - by Yuan
    I want to log in my website by using google account, now i can use google account to log in(by OpenID), but i don't know how to get user account and information in google? Just like below link(which is provided by google) http://googlecodesamples.com/hybrid/ This link can log in by user's google account, and list all the documents in user's google doc, so i guess by using OAuth can let me get user's account(such as [email protected]) and get relative information, but i don't know how to do? PS. I use php to write my website

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  • jquery selectors (finding tag)

    - by matthewsteiner
    I'm sure this is simple, but I can't seem to figure it out. I need to be able to pass a function an element id, and know what element tag it is. For example: <a id="first"></a> <input id="last" /> If I know the id is "first", how can I get that the tag is "a"?

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  • How to check if *number* is in a array

    - by Emil
    Pretty basic programming question, I know PHP have a function for it, but does the iPhone OS have one? I want to check if the current indexPath is a value in an array. PHP Example: <?php $indexPath = 3; $array = array("0", "1", "2", "3", "4"); if (in_array($indexPath, $array)) { // Do something } ?> Does anybody know how to do the same thing inthe iPhone OS?

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  • How to delete massive files via ftp or ssh?

    - by spotlightsnap
    On my servers, one of the scripts that I have been using keeps creating the blank files at root and I haven't been noticed for more than over 6 months and now total files are created more than 500,000 files. I cannot access that directory through control panel because there were too many files and I can only access with ftp. Even with ftp, ftp truncated the files by 8000 each. So I have to keep deleting 8000 each. I tried to ask my host to delete it for me but they says they can't since it's the liability issues. So what I want to know is how can i delete all of those 500,000 files through ftp? Since it's shared hosting, I don't have SSH access either. Hosting provider says I can request the SSH access but need to verify it and their office closed until next week. So I am stuck with ftp for now. So please kindly let me know how can i delete massive files via ftp ? And incase, if i can get the ssh access, please kindly let me know how can i delete the files via ssh with efficient ways ? Filename are like this closecp.139619 closecp.139619.1 closecp.139620 closecp.139620.1 Thank you.

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  • Cancel changes in a Java Swing Input window

    - by Tony
    I am new to Java Swing and I am creating a window which displays a list of items retrieved from an XML file that can be manipulated by the user. The window should have a Cancel and a Save functionality implemented with buttons. While the Save functionality is straightforward (just close the window) I don't know how to implement the Cancel functionality. Does exist an "undo" function? Does anyone know how?

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  • How can I make a GUI frontend to a command line tool in OSX?

    - by bfred.it
    I'm dying to know how I can make a GUI for ffmpeg and jhead in OSX. I've been looking for a solution for a while and thought you, stackoverflow's users, could help me. Maybe you know some document I haven't come across of or, better, a tutorial to make a GUI. I love those two tools but I like the simplicity of drag/drop operations. Note: I don't need a GUI for them, I want to make one.

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  • best book to start XML and Html5?

    - by asad26
    hey every one can some one help that , how can start XML and Html and what i have to start first and what steps should I take , and because I know Objective c as iphone programmer but i what to know more about web base application so please some one help me with steps should I take and as beginner? thanks

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