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• What does [a|b|c] evaluate to in Prolog?

  - by Ambrose

  The pipe operator in prolog returns one or more atomic Heads and a Tail list. ?- [a,b,c] = [a,b|[c]]. true. Nesting multiple pipes in a single match can be done similar to this: ?- [a,b,c] = [a|[b|[c]]]. true. What does the statement [a|b|c] infer about a, b and c?

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• update multiple rows in oracle

  - by devang

  hi can you tell me how to update multiple rows in oracle as when i fired the update statment it gave me the following error ORA-01427: single-row subquery returns more than one row Thanks in advance

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• MYSQL Order By Sum of Columns

  - by djs22

  Hi all, Any idea on how to order the results of a MYSQL query by the sum of two columns rather than by a single column? Select * FROM table ORDER BY (col1+col2) desc I know that won't work., but I hope it conveys what I want to do fairly well. Thanks!

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• How does one access this hash from an ActiveRecord class in the Rails console?

  - by randombits

  I have a simple hash I created to make it easier to do dictionary type lookups. For instance: class Numbers < ActiveRecord::Base MY_TYPES { one: => 1, two: => 2 } end Is it not possible in the rails console to access this hash via Numbers.MY_TYPES[:one]?

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• unix process id

  - by swathi

  how to a Write a script that runs a 5 instances of a child process in the background (at a gap of 5 seconds) and do a continuous check to see if any of the child process is completed it starts another instance of the same process till the child process has executed 20 instances.

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• Reset SQL variable inside SELECT statement

  - by Jason McCreary

  I am trying to number some rows on a bridge table with a single UPDATE/SELECT statement using a counter variable @row. For example: UPDATE teamrank JOIN (SELECT @row := @row + 1 AS position, name FROM members) USING(teamID, memberID) SET rank = position Is something like this possible or do I need to create a cursor? If it helps, I am using MySQL 5.

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• Core data fetch only returns unique managed objects

  - by JK

  I execute a core data fetch which specifies a predicate as follows: NSPredicate *predicate = [NSPredicate predicateWithFormat:@"identifier IN %@", favoritesIDs]; When there are duplicate items in the favoriteIDs array, the fetch request only returns 1 managed object. How can I ensure that more than one instance is fetched? Thank you.

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• Regex for url domain

  - by systempuntoout

  How do i match from these urls: http://foo.bar.com http://bar.com foo.bar from the first link and bar from the second link using one single regex?

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• Shortcodes and Custom Fields

  - by user1429400

  How do I get shortcodes to process properly in custom fields? I've tried using the code below, but I cannot figure out where to place it ("button" is the name of the field): <?php if ( get_post_meta($post->ID, 'button', true) ) echo do_shortcode(get_post_meta($post->ID, 'button', $single = true)); ?> As of now, the shortcode is working in the sense that the button is displaying, but the shortcode text is displaying where the "buy now" button is supposed to be. See screenshot: http://i.imgur.com/41vsr.png

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• Smooth Text On Glass

  - by j-t-s

  Hi All I have seen many other samples out there that draw smooth text on glass. But I can't use them. I need every single label that gets added at runtime to be smooth. I can't just "draw" text onto the screen. Is this at all possible, and are there and sources around? Thank you

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• Supported Linq for WCF Data Services

  - by jfar

  I'm looking for the full list of supported linq extension methods that are compatible with WCF Data Services. By trial and error I've found First() and Single() aren't supported, any others? This gives me a pretty good idea of whats supported, I just don't know whats actually translated via the IQueryProvider.

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• How can I save content from another website to my database ?

  - by HJ-INCPP

  Hello, I want to upload dynamically content from a soccer live score website to my database. I also want to do this daily, from a single page on that website (the soccer matches for that day). If you can help me only with the connection and retrieval of data from that webpage, I will manage the rest. website: http://soccerstand.com/ language: php/java - mysql Thank you !

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• "Subdomain" after my website name

  - by user322600

  Is there a way to create (dinamically) a kind of subdomain that goes between my website domain and the .com? For www.onlinevet.com, for instance, would be something like: www.onlinevet.dog.com www.onlinevet.cat.com

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• Does class without data member have memory footprint in java ?

  - by Silent Warrior

  My question is related to memory footprint in java for class without data member. Suppose in java I have a class which doesn't have data member and it only contains methods. So if I am creating instance of particular class then does it occupies memory in primary memory except object reference memory ?

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• MySQL Query For Copying Contents Into Another Field, Same Row

  - by Rob Adler

  Is there a single query (subqueries in it are allowed) where I can copy the content of one field into another field, per row. Example: price, and priceBackup Records: 45.55 47.77 45.55 copies into priceBackup for that specific row, 47.77 copies into priceBackup for that specific row. I do have a primary key, auto increment on it under 'id'. Thanks guys!

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• drupal taxonomy

  - by slimcady

  I have several different content type nodes (videos, image galleries, stories...) that I would like to categorize and create a top-level page that aggregates these nodes. So for example, the top-level page would have teaser thumbnails very similar to the front page view but of course filtered for that topic (like for instance automobiles, and motorcycles would have its own page, etc...). What is the best way to accomplish this? Taxonomy? Views?

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• How to include a dynamic page contents into a template ?

  - by Ankit

  Hi All, I have to include a dynamic page content into my template, Say I have a left panel which gets the data dynamically through a view. Now, I have to include this left panel into all my pages but I do not want to duplicate the code for all the pages. Is there any way, I can write a single script and include it in all my templates to display the left panel in all my pages? Thanks in advance.

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• Retrieve Value from NSString

  - by Taimur Hamza

  Hi, i have a NSString instance ,i want to retrieve value from it and store it into an integer. This is wat i am doing but its not working. NSString *totalcnt; char *str = totalcnt; int a = atoi(str); Help me out. Thanks Taimur

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• Finding all classes containing a method in C#

  - by Loren Pechtel

  I want to search through all classes in a namespace for those containing a certain method. If a class contains a method then I want to create an instance of the class and run the method. Obviously I have to start with reflection but I'm stuck on where to go.

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• How to create thumbnails or preview for videos?

  - by Vijay

  hi i want to display thumbnails or preview panels for videos listed on my site, i want to fetch a single frame from a video (from a particular time i.e get a frame of exactly after 1 min) and display them as thumbnails as in youtube... Any help?

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• Issue with Flash Player 10.

  - by Gans

  Some times when the URL is clicked it navigates to the videopage, but I am hearing audio but not seeing any video. Why might this be? I am using the latest version of Flash Player 10. The SWF in question was created in Flash 9 (CS2). var s1 = new SWFObject("flvplayer.swf","single","560","400","7"); === What is wrong with this?

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• How to play music on site preventing direct file download

  - by Hugo Palma

  I'm starting a blog with a hosted wordpress instance and i would like to be able to stream music using a flash player on some posts. The problem is that every player i find uses a simple param to get the file url which makes it very easy for someone to find that url and just download the file. A server side solution can be implemented as i have full access to the server.

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• Maximum number of inodes in a directory?

  - by Dr. UNIX

  Is there a maximum number of inodes in a single directory? I have a directory of 2 million+ files and can't get an the ls command to work against that directory. So now I'm wondering if I've exceeded a limit on inodes in Linux. Is there a limit before a 2^64 numerical limit?

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• Sample MS application for Enterprise library?

  - by DotnetDude

  Does MS have a sample enterprise application that demonstrates the use of different Enterprise library blocks (Logging, Dataaccess, Exception, Validation etc)? I am looking for something that uses best practices in using and integrating all these blocks in a single application.

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• Distributed Application Environment and Web Services - What/How to learn?

  - by Dan

  I want to learn how to create distributed application environments and web services using spring, aspectj, hibernate, etc. rather than EJBs. Can anyone recommend a book or set of books that can help me (a single all-in-one book would be preferable)? Also, any advice regarding learning/creating distributed app environments and web services is appreciated.

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