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• link_to_unless_current for subURLs in Rails

  - by Vitaly

  Hey, I'm looking for a way to use something similar to link_to_unless_current but for sub URLs, so for instance for both these URLs: /entity_name/ /entity_name/123 it will not result as a link. How can I achieve that in Rails?

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• What does your Objective-C singleton look like?

  - by schwa

  Mine is merely (or a close variant thereof): static MyClass *gInstance = NULL; + (MyClass *)instance { @synchronized(self) { if (gInstance == NULL) gInstance = [[self alloc] init]; } return(gInstance); }

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• C How to find the length of an integer

  - by marabunta2048

  Hello, I would like to know how I can find the length of an integer in C. For instance: 1 = 1 25 = 2 12512 = 5 etc. etc. How do I do this and is this even possible in C ?

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• Is Perforce's C++ P4API thread-safe?

  - by Scott Bilas

  Simple question - is the C++ API provided by Perforce thread-safe? There is no mention of it in the documentation. By "thread-safe" I mean for server requests from the client. Obviously there will be issues if I have multiple threads trying to set client names and such on the same connection. But given a single connection object, can I have multiple threads fetching changelists, getting status, translating files through a p4 map, etc.?

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• UDP port binding by multiple applications?

  - by moon

  hello i am trying to bind multiple applications running on different pc's across a single lan network is it a good idea when all applications are receiving on same port and sending at same port for example. app1 (receiving at 10000 port , sending at some ip2 and 10000 port) app2 (receiving at 10000 port , sending at some ip1 and 10000 port) any other good idea for performing this task is also accepted .

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• What is null in Java?

  - by kunjaan

  What is null? Is null an instance of anything? What set does 'null' belong to? How is it represented in the memory?

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• How can I get all the versions of a given file?

  - by Martin

  I would like to obtain all the versions of a given file in my SVN repository. For instance, let's say that the file ThirdPartyAssembly.dll was checked 3 times, is there a command that will get me all the version on my HD (e.g. ThirdPartyAssembly.dll.v1, ThirdPartyAssembly.dll.v2, ThirdPartyAssembly.dll.v3, etc.)? Thanks!

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• What's the best way to stop multiple instances of a Windows app being launched?

  - by John

  Many Windows apps (like Skype or MSN for instance) don't let you start multiple instances, rather trying to run it a 2nd time just leaves the existing version running. Is this typically done in some simple way - the start-menu shortcut is a 'wrapper' app around the main app - or is there some registry magic you can do to delegate the problem to Windows itself? Specifically dealing with Win32 here (unmanaged C++) but happy to hear more general solutions as long as they are workable on Windows XP or alter.

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• How to use same view-state with different views in spring web flow

  - by Explorer

  Hey Guys, I am trying to find the way to use same view-state but with different views so that based on where it is being called, I can provide different view to the user. For instance, trying to achieve as follows: Please share your experience so that I can achieve this functionality easily.

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• How can I pass information between 2 different View Controllers?

  - by sagiftw

  Hi, This is a simple question: I have 2 different view controllers, and each one has its own data stored in its .m file. I want to take a value, for instance, an integer value (int i=3;) that is declared in ViewController1 and pass it to ViewController2, so I will be able to use that value in the second view controller. Can anyone please tell me how to do it? Thanks in advance, Sagiftw

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• Array/List/Directory of System.Type

  - by Mike

  I have a lot of classes and want to create some kind of 'directory'. So that I can create menus automatically. Clicking a menu-item would then create an instance of the class and shows the window. What I want for this is an array of System.Type where I can stuff in all the classes without instantiating them. Though from my test and (unsuccessful) googling, this doesn't seem possible. Any ideas?

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• Returning the size of available virtual memory at run-time in C++

  - by Greenhouse Gases

  In C++ is there a predefined library function that will return the size of RAM currently available on a computer a program is being run on, at run-time? For instance, if an object is 4bytes, then can we divide the available virtual memory by 4 bytes to give an estimate of how many more objects could be stored by the program safely? I have used the sizeof() function to return the size of objects within my program. Thanks

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• Problem with MySQL query

  - by Psyche

  This time my setup looks like this: one table with galleries names (gallery_id, gallery_name) and another table with galleries photos (photo_id, photo_gallery_id, photo_name). What I need is to get all the galleries with one random picture for each gallery. Is it possible to do this with a single query?

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• deleteRowsAtIndexPaths- crahes application [closed]

  - by Tushar Chutani

  (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if (editingStyle == UITableViewCellEditingStyleDelete) { NSLog(@"delet it"); // Delete the row from the data source. [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES]; } else if (editingStyle == UITableViewCellEditingStyleInsert) { // Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view. } } why is this crashing my application

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• How to make two different files (with their contents) equal using command in linux shell?

  - by user2617138

  How to make two different files (their contents) equal using terminal in Linux? Suppose i have a file A in which the content is Hello world and i have a file B in which the content is Hello worlds. Now we find the difference between the 2 files using the diff or sdiff utility. Now i want to append the contents of the 2 different files into a single file or make the two different files (their contents) equal using terminal or any other utility.

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• How to capture current time of a Timer?

  - by EEE

  I have a timer which helps me to move a point in a line, and I want to pause the animation, then resume it from paused time? How can I capture the current time of a javax.swing.Timer instance?

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• How to repeat an array in PHP?

  - by wamp

  $arr = array('1st', '1st'); The above $arr has 2 items , I want to repeat $arr so that it's populated with 4 items Is there a single call in PHP?

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• Jquery in chrome plugin

  - by Cyclone

  There is jquery on the page my script is trying to access, and the code I am trying to execute runs fine in console. However, when I use chrome.tabs.executeScript on that single tab, it says that $ is undefined. How can I fix this? Thanks for the help!

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• Modify an exact line number of a text file and add certain string after the end of the line

  - by Werner

  Hi, given a plain text file, how can I do, using bash, awk, sed, etc, to, at the line number NLINE, add the string STR, just n spaces after the end of the line? So, for instance, if this is the line NLINE: date march 13th for 5 spaces, we get date march 13th STR and one gets the modification in a new file. Thanks

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• SQL Server 2008 and SP1

  - by andrew007

  Hi, I have a server where I installed SQL Server 2008 and after I applied the SP1. Now, I want also to add the Analysis Services to this instance by using the "Add or remove features...". My questions are: Is it possible to add the Analysis Services on a server with SP1 already installed? How can I apply the SP1 also to the new Analysis Service feature? THANKS!

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• Define and send a JSON object array

  - by Eric

  I'm looking for a way to define and send a JSON object array. I've figured out how to define a single JSON object, turn it into a string and send it, but what about an array of this type? Probably something simple I'm overlooking... var myColumnSetting = { "ColumnName": name, "ColumnIndex": index } convert it to a string var myJSONText = JSON.stringify(myColumnSetting, false);

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• Print data available in mysql in php

  - by DAFFODIL

  I have 3 forms and 3 db.I have data in db. Now,i want all of them to print in a single page. I am using wamp server for php. I googled but,could nt find out. Give a snippet.Thnx in advance.

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• Google App Engine query data store by a string start with ...

  - by Frank

  How to write a query that can find me all item_number start with a certain value ? For instance there are item_numbers like these : 123_abc 123_xyz ierireire 321_add 999_pop My current query looks like this : "select from "+PayPal_Message.class.getName()+" where item_number == '"+Item_Number+"' order by item_number desc" What's a query look like that can return all item_numbers start with "123_" ?

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• How do I do a .count on the model an object belongs_to in rails?

  - by Angela

  I have @contacts_added defined as follows: @contacts_added = Contact.all(:conditions => ["date_entered >?", 5.days.ago.to_date]) Each contact belongs_to a Company. I want to be able the count the number of distinct Companies that @contacts_added belong to. contacts_added will have many contacts that belong to a single company, accessible through a virtual attribute contacts_added.company_name How do I do that?

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• How to retrieve from two tables with same foreign key repeated more than once?

  - by Sarenya

  How to display the data of tables that are linked by a primary key and foreign key where the foreign key of the data repeats? For ex. I have two tables, ParentTable and Childtable. The primary key of ParentTable acts as the foreign key of ChildTable. There are more than one record with same ParentId in ChildTable. How to retrieve them and display in a single Grid or List or any type of view?

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