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• How do I limit JPQ output?

  - by den-javamaniac

  I need to limit number of entities returned by a query to some certain value inside a JPA query (through JPQL). Particularly: select m from Manual m //constraint e.g. in sql (mysql syntax) I would do it like: select * from Manual limit 1 The only solution that comes up is simply to get all entities and then choose first one, which is out of the issue. Any ideas?

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• Which of the C-family languages have a preprocessor?

  - by uj2

  Among the C-syntax family of languages (C, C++, Java, C#, ObjC, JS, AS, ...), which have a preprocessor compatible (to whatever extent) with the C preprocessor?

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• Why would I use Dropbox *and* Git for my Emacs initialization file?

  - by Michiel Borkent

  I hear a lot of Emacs users have their init file under git version control and sync the git repository over Dropbox, when they run Emacs on multiple systems. Why would you use git in this situation exactly? Usually checking which system you're on and which things to load and set depending on that can happen in one and the same init file for all systems, right? So, isn't it simply enough to put your init file in a Dropbox directory and load that one directly from Emacs then?

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• ExtJS: Add Single Click Action To A Node In A TreePanel

  - by FluidFoundation

  [revised] I'm creating a TreePanel in ExtJs that is loading its children from a JSON file. I'm having trouble adding a click action to the nodes. I'm not sure whether it's added in the script creating the tree, or if its added as a property in the JSON, and if so, what the syntax would be. Any help would be appreciated! Please provide an example if possible.

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• Intializing dictionary in c# 3.0

  - by Casey

  I'm having trouble with the following collections initalization: private Dictionary<string, string> mydictionary = new Dictionary<string, string>() { {"key", "value"} , {"key2", "value2"} , {"key3", "value3"} }; I keep getting various compiler errors about the syntax. From what I have googled this should be perfectly valid C# 3.0 code. The first error that pops up is: Error 102 ; expecte What am I doing wrong?

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• How to use LINQ for CRUD with a simple SQL table?

  - by Rob Ferno

  Every LINQ blog I found there seemed around 2 years old, I understand the syntax but need more direction on creating the SQL mapping and context classes. I just need to use LINQ for 2 SQL tables I have, nothing complicated. Do folks write the SQL mapping classes by hand for such cases or is there a decent tool for this? Can someone point me in the right direction?

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• how to print background image on printer as watermark

  - by air

  i have one image background of table with following syntax style="background-image(URL)" the problem is when i print it on printer it did't print. can you please tell me how to get this image background also get it printed on paper as watermark. Thanks

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• How can I implement a dispatch table using Perl objects?

  - by bitbucket

  What is the syntax for the hash value for a Perl object member subroutine reference in a dispatch table? use lib Alpha; my $foo = new Alpha::Foo; $foo->bar(); my %disp_table = ( bar => ??? ); I want ??? to be the code reference for $foo->bar().

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• C++: Pass array created in the function call line

  - by Jarx

  How can I achieve a result like somebody would expect it according to the following code example: // assuming: void myFunction( int* arr ); myFunction( [ 123, 456, 789 ] ); // as syntactical sugar for... int values[] = { 123, 456, 789 }; myFunction( values ); The syntax I thought would work spit out a compile error. How can I define an argument array directly in the line where the function is called?

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• Loop through list within a Groovy multi line string

  - by UltraVi01

  I am trying to create a multi line string in Groovy. I have a list of strings that I'd like to loop through within the multi line string. I am not sure what the syntax is for this. Something like below... def html = """\ <ul> <li>$awaiting.each { it.toPermalink()}</li> </ul> """

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• Is there a way to use rsync and exclude files greater than a certain size?

  - by milesmeow

  I've checked out the man pages and did some searching but can't find info on ways to have rsync skip files greater than a certain size. We're doing rsync to an offline location and when someone puts a hug video file, the rsync jobs run into work hours. I've looked at the 'exclude' syntax and didn't see anything for excluding based on file size. Can I do it with rsync or should I look for other offline synching alternatives?

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• How do I get Aptana to recognize .jspf files?

  - by Keith Bentrup

  How do I get Aptana to recognize .jspf files? I'd like to have syntax highlighting for .jspf files. I'm sure there's a preference/config option or an xml file to edit, but I'm not finding it. I assume it's similar to the eclipse process, so I'm tagging eclipse, too. If it's not, I'll remove the tag.

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• Should you always write code for else cases that "can never happen"?

  - by johnswamps

  Take some code like if (person.IsMale()) { doGuyStuff(); } else { doGirlOtherStuff(); } (Yes, I realize this is bad OO code, it's an example) Should this be written so that to explicitly check if person.isFemale(), and then add a new else that throws an exception? Or maybe you're checking values in an enum, or something like that. You think that no one will add new elements to the enum, but who knows? "Can never happen" sounds like famous last words.

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• Only show certain items in a mysql database using php and time()

  - by Jon

  Is there a way to only show the items that are older than a certain date in a php mysql array? I'm using this query method and sorting by lastpost_cl: $query="SELECT * FROM properties ORDER BY lastpost_cl"; $result=mysql_query($query); $num = mysql_num_rows ($result); mysql_close(); and I was thinking the way of checking the time would be: if (time() <= strtotime($lastpost_cl)) { } How can I combine the two and only show lastpost_cl that are older that the current time?

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• How do I use the conditional operator?

  - by Jeremy Rudd

  I've always wondered how to write the "A ? B : C" syntax in a C++ compatible language. I think it works something like: (Pseudo code) If A > B C = A Else C = B Will any veteran C++ programmer please help me out?

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• How do I write a bash script to restart a process if it dies?

  - by Tom

  I have a python script that'll be checking a queue and performing an action on each item: # checkqueue.py while True: check_queue() do_something() How do I write a bash script that will check if it's running, and if not, start it. Roughly the following pseudo code (or maybe it should do something like ps | grep?): # keepalivescript.sh if processidfile exists: if processid is running: exit, all ok run checkqueue.py write processid to processidfile I'll call that from a crontab: # crontab */5 * * * * /path/to/keepalivescript.sh Thanks in advance.

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• javascript setinterval function problem

  - by vakas

  i am using this code <a onclick="javascript:var t=setInterval("GetUpdates(5,ajaxResult)",300);">GetUpdates</a> but getting the syntax error

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• How Do I populate Silverlight 4 Charts using aggregate queries in WCF RIA Services?

  - by WebWeaver1021

  I need to get counts to populate charts in Silverlight 4 and I am having a bit of trouble getting data back from my Domain Service mostly because I am not sure how to use aggregate query syntax. Has anyone had any luck populating charts in Silverlight 4 using aggregate (SUM, COUNT, etc) linq queries?

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• Database Version Control

  - by Adam Lerman

  Is there a good way to check database structure into a SVN? Perhaps checking in a DDL file when changed? Any ideas?

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• Why doesn't web browsers have built in validators?

  - by August Karlstrom

  As far as I know there is no web browser with built in validators for HTML, CSS and Javascript. Developing web pages without validation is like using a compiler that doesn't do syntax analysis. Even Firefox with its excellent plugins aimed at developers like Firebug lacks plugins for CSS and Javascript validation. Wouldn't it be useful to have these plugins? Am I missing something?

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• Up to date tutorial of FormsAuthentication in Asp.Net MVC

  - by ripper234

  I'm not getting to hang of the entire FormAuthentication thing. Is there an up-to-date tutorial somewhere? I found this one, but it a bit old and the syntax doesn't match recent Asp.Net MVC.

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• Custom warning in Xcode

  - by maximumnamelength

  I'm working on an API library and I'd like to add a few warnings that would appear when another developers builds the app if an optional apikey is not included. It should be buildable w/o the key (since it's optional) so I can't just add a syntax error to force a build error. I know Xcode supports TODO and FIXME but those aren't really highlighted anywhere major. Any other thoughts on how to approach this?

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• R - indirectly calling a matrix using a string

  - by Boris Senderovich

  Example: There is a matrix of data called VE There is a vector of string where the first element is the string VE. I need to indirectly call the string and be able to access data. For example if I need the 6th column of matrix VE then I want to do: Vector[1][,6] Essentially I need R to start reading those string as if they are the matrix names that are already in this page. I need this syntax to be dynamic because I am putting it in a loop.

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• How do I detect bots programatically

  - by Tom

  we have a situation where we log visits and visitors on page hits and bots are clogging up our database. We can't use captcha or other techniques like that because this is before we even ask for human input, basically we are logging page hits and we would like to only log page hits by humans. Is there a list of known bot IP out there? Does checking known bot user-agents work?

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• Loop over array and set all vars to false or true in javascript

  - by Sixfoot Studio

  Hi All, I need to loop over my array and set all the vars to false or true. I have tried numerous options, none of which are working and it's clearly my lack of javascript syntax knowledge..Please take a look at this: var closeAllCells = [IncomeOpen = "false", RehabOpen = "false", AttendantCareOpen = "false", HomeMaintenanceOpen = "false", DependantCareOpen = "false", IndexationOpen = "false", DeathFuneralOpen = "false", ComprehensiveOpen = "false", CollisionOpen = "false", LiabilityOpen = "false", DCPDOpen = "false"]; So my thinking is that I can just loop over this as follows for (var i=0;i<closeAllCells.length;i++) { closeAllCells[i] = true; // or false if I wished }

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