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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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• 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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• Hibernate OneToOne - how to set null value?

  - by EugeneP

  If I want to save a linked instance as null in a database, what should I do? I cannot simply pass null to obj.setOneToOneAssociatedObject(null) Still, I want to save this link as null (table allows it).

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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 can I tell if a ManualResetEvent is signaled or non-signaled?

  - by jbraz

  I want to check to see if an instance of ManualResetEvent is signaled before starting a thread. How can I do this?

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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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• I need to programmatically remove a batch of unique constraints that I don't know the names of.

  - by Bill

  I maintain a product that is installed at multiple locations which as been haphazardly upgraded. Unique constraints were added to a number of tables, but I have no idea what the names are at any particular instance. What I do know is the table/columnname pair that has the unique constraints and I would like to write a script to delete any unique constraint on these column/table combinations. This is MSSQL 2000 and later. Something that works on 2000/2005/2008 would be best!

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• Is it standard behavior for this code to throw a NullPointerException?

  - by Eric

  I've had a big problem in some library code, which I've pinned down to a single statement: System.out.println((String) null); Ok, the code doesn't actually look like that, but it certainly calls println with a null argument. Doing this causes my whole applicaio to throw an unexpected NullPointerException. In general, should println throw this exception under that circumstance, or is this non-standard behavior due to a poor implementation of the out instance?

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• Counting the instances of customers

  - by Mikae Combarado

  Say that I have a table with one column named CustomerId. The example of the instance of this table is : CustomerId 14 12 11 204 14 204 I want to write a query that counts the number of occurences of customer IDs. At the end, I would like to have a result like this : CustomerId NumberOfOccurences 14 2 12 1 11 1 204 2 14 1 I cannot think of a way to do this.

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• Is there a way to catch an attempt to access a non existant property or method?

  - by Tor Valamo

  For instance this code: function stuff() { this.onlyMethod = function () { return something; } } // some error is thrown stuff().nonExistant(); Is there a way to do something like PHP's __call as a fallback from inside the object? function stuff() { this.onlyMethod = function () { return something; } this.__call__ = function (name, params) { alert(name + " can't be called."); } } // would then raise the alert "nonExistant can't be called". stuff().nonExistant();

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• Load variable only once in struts 1 Action class

  - by xain

  Hi, I have a structs action object instance that loads a variable from a properties file.I want it to happen only the first time the action is called, so in further executions its read from memory. Any hints ? Thanks.

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• Better way to write this ?

  - by atif089

  any better way to write this ? $(this).parent().parent().find(" dd ul").toggle(); update.. I am trying to create a dropdown using the script here http://www.jankoatwarpspeed.com/post/2009/07/28/reinventing-drop-down-with-css-jquery.aspx however the script works only for one instance of list and my code works good for multiple instances. Just curious if there is another better way to get parent of a parent in jQuery

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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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• (Python) Why do I always have to type absolute paths in file functions?

  - by Ideka

  For instance, if I have: C:\42\main.py and C:\42\info.txt and I want to read info.txt from main.py, I have to input "C:\42\info.txt" instad of just "info.txt". Is it supposed to be like that? If not, how can I fix it?

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• Maximum Length for a foreign key in DB2? (SQL0107N)

  - by IronGoofy

  We have two installations of DB2. When defining a foreign key with a long name, it works fine on one instance, but not on the other (we get a SQL0107N Name too long - max length is 18). What is causing this different behaviour? Is there a parameter we can change or is it version dependant?

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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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• What does "object affine" mean?

  - by mafutrct

  What does "object affine" mean? For instance, there are object affine thread pools. While I understand both thread pools and affine transformations in math, I can't think of an association between them.

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• how to change two div-positions on click with javascript

  - by flp

  hi folks, i got a webpage with some "cards" (divs) layin on it. they are positioned in a star-like order, flowing to the background. i want to bring cards from the background to the middle-foreground bei clicking on it (to focus the card "contact" for instance). how can i realize this? is there any script which is already containing a function like this?

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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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• htaccess rewriterule index.html

  - by user322731

  I'm using a PHP framework which redirect all URL to the index.php file using the following rule: RewriteRule ^(.*)$ /index.php/$1 [L] However, I want to be able to use index.html IF ANY ONLY IF users hit the home page. For instance, if users hit http:// website.com it will render the index.html file. Any other URL will use index.php. Could someone help? ThankS

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• Querying content of Windows Media Center library

  - by Tuvix

  I'm trying to create a program in C# that lists the content of a library in Windows Media Center (for instance the video library). Is this possible using the Windows Media Center SDK, without having to create it as an addin for WMC, but as an "external" program, running on the same machine as WMC?

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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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• writing 'bits' to c++ file streams

  - by Sorush Rabiee

  How can i write 'one bit' into a file stream or file structure each time? is it possible to write to a queue and then flush it ? is it possible with c# or java? this was needed when i try to implement an instance of Huffman codding. i can't write bits into files. so write them to a bitset and then (when compression was completed) write 8-bit piece of it each time (exclude last one).

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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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• 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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