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  • How to get attribute of a model saved in instance variable

    - by Nazar
    I am writing a plugin, in which i define a new relation dynamically with in plugin. Sample code is given below module AttachDocumentsAs @as = nil def attach_documents_as(*attachment_as) attachment_as = attachment_as.to_a.flatten.compact.map(&:to_sym) @as = attachment_as.first class_inheritable_reader(@as) class_eval do has_many @as, :as => :attachable, :class_name=>"AttachDocuments::Models::AttachedDocument" accepts_nested_attributes_for @as end end end now in any model i used it as class Person < AtiveRecord::Base attach_documents_as :financial_documents end Now want to access want to access this attribute of the class in overloaded initialize method like this def initialize(*args) super(*args) "#{@as}".build end But it is not getting required attribute, can any one help me in it. I want to build this relation and set some initial values. Waiting for guidelines from all you guys.

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  • Help with a MySQL SELECT WHERE Clause

    - by Dr. DOT
    A column in my table contains email addresses. I have a text string that contains the a few usernames of email addresses separated by commas. I can make text sting into an array if necessary to get my SELECT WHERE clause to work correctly. Text string search argument is 'bob,sally,steve' I want to produce a WHERE clause that only returns rows where the username portion of the email address in the table matches one of the usernames in my text string search argument. Thus a row with [email protected] would not be returned but [email protected] would be. Does anyone have a WHERE clause sample that produces this result? Thanks.

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  • jQuery Validate - Require at least one from group, plus additional items.

    - by Kevin Pullin
    I'm attempting to use 'jQuery Validate' on a form that requires an email address plus either all items of a shipping address completed or none at all. Using the sample provided by the solution to this question: jQuery Validate - “Either skip these fields, or fill at least X of them”, I have been able to successfully solve the validation of the address group. The problem, however, is that the logic for validating the email address field does not work. From debugging the Validate scripts, the "re-entrant" validation code triggered by calling 'fields.data('being_validated', true).valid();' in the linked example results in a reset of all previously validated errors (i.e. the email validation error is cleared). I have modified some existing samples, the first in which removes the offending line and the second with it included. Email Validation Working Email Validation Fails Any tips or suggestions on how to properly solve this or work around the failure?

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  • Count word occurrences in a text field with LINQ

    - by Yoann. B
    How can i get the occurrences count of a Word in a database text field With LINQ ? Keyword token sample : ASP.NET EDIT 4 : Database Records : Record 1 : [TextField] = "Blah blah blah ASP.NET bli bli bli ASP.NET blu ASP.NET yop yop ASP.NET" Record 2 : [TextField] = "Blah blah blah bli bli bli blu ASP.NET yop yop ASP.NET" Record 3 : [TextField] = "Blah ASP.NET blah ASP.NET blah ASP.NET bli ASP.NET bli bli ASP.NET blu ASP.NET yop yop ASP.NET" So Record 1 Contains 4 occurrence of "ASP.NET" keyword Record 2 Contains 2 occurrence of "ASP.NET" keyword Record 3 Contains 7 occurrence of "ASP.NET" keyword Collection Extraction IList < RecordModel (ordered by word count descending) Record 3 Record 1 Record 2 LinqToSQL should be the best, but LinqToObject too :) NB : No issue about the "." of ASP.NET keyword (this is not the goal if this question)

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  • removing a line from a text file?

    - by Blackbinary
    Hi all. I am working with a text file, which contains a list of processes under my programs control, along with relevant data. At some point, one of the processes will finish, and thus will need to be removed from the file (as its no longer under control). Here is a sample of the file contents (which has enteries added "randomly"): PID=25729 IDLE=0.200000 BUSY=0.300000 USER=-10.000000 PID=26416 IDLE=0.100000 BUSY=0.800000 USER=-20.000000 PID=26522 IDLE=0.400000 BUSY=0.700000 USER=-30.000000 So for example, if I wanted to remove the line that says PID=26416.... how could I do that, without writing the file over again? I can use external unix commands, however I am not very familiar with them so please if that is your suggestion, give an example. Thanks!

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  • Regular expression quantifier questions

    - by Josemalive
    Hello, Im trying to find a regular expression that matches this kind of URL: http://sub.domain.com/selector/F/13/K/100546/sampletext/654654/K/sampletext_sampletext.html and dont match this: http://sub.domain.com/selector/F/13/K/10546/sampletext/5987/K/sample/K/101/sample_text.html only if the number of /K/ is minimum 1 and maximum 2 (something with a quantifier like {1,2}) Until this moment i have the following regexp: http://sub\.domain\.com/selector/F/[0-9]{1,2}/[a-z0-9_-]+/ Now i would need a hand to add any kind of condition like: Match this if in the text appears the /K/ from 1 to 2 times at most. Thanks in advance. Best Regards. Josema

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  • Python and hebrew encoding/decoding error

    - by user340495
    Hey, I have sqlite database which I would like to insert values in Hebrew to I am keep getting the following error : UnicodeDecodeError: 'ascii' codec can't decode byte 0xd7 in position 0: ordinal not in range(128) my code is as following : runsql(u'INSERT into personal values(%(ID)d,%(name)s)' % {'ID':1,'name':fabricate_hebrew_name()}) def fabricate_hebrew_name(): hebrew_names = [u'????',u'???',u'???',u'???',u'????',u'???',u'????',u'???',u'????',u'?????',u'????',u'???',u'????'] return random.sample(names,1)[0].encode('utf-8') note: runsql executing the query on the sqlite database fabricate_hebrew_name() should return a string which could be used in my SQL query. any help is much appreciated.

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  • Is there anyway to bring web @Context into JUnit (CXF+Spring)

    - by Sudheer
    I am trying to create unit test environment to test RESTFul services (cfx+spring) in my dev environemnt. To test RESTFul Services, I require @Context within JUnit test cases. @Context should contain HttpRequest, HttpSession, ServletContext, ServletConfig and all other webserver related information. I have setup the JUnit for the above, but when I run, @Context is coming as null. This could be because there is no webserver running and there is no @Context. I am just doubting whether there is a way to created sample web @Context and pass to JUnit. Any other ideas are welcome to bring web @Context into JUnit test cases. Thank you, Sudheer

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  • Can someone exaplain me implicit parameters in Scala?

    - by Oscar Reyes
    And more specifically how does the BigInt works for convert int to BigInt? In the source code it reads: ... implicit def int2bigInt(i: Int): BigInt = apply(i) ... How is this code invoked? I can understand how this other sample: "Date literals" works. In. val christmas = 24 Dec 2010 Defined by: implicit def dateLiterals(date: Int) = new { import java.util.Date def Dec(year: Int) = new Date(year, 11, date) } When int get's passed the message Dec with an int as parameter, the system looks for another method that can handle the request, in this case Dec(year:Int) Q1. Am I right in my understanding of Date literals? Q2. How does it apply to BigInt? Thanks

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  • Pass Value between MDI Child in WinForm using C#

    - by abhilashca
    I have an MDI Parent, containing a MenuStrip. When I click on one of the Menu, two Child Forms are displayed simultaneoulsy. I have a TextBox and a Send Button on one of my ChildForm. When I type-in something in that TextBox and Click the Send Button, I need to show that value in the TextBox of my Second Child Form. What I had done is, I wrote a Public Function in the Second Child Form and tried to invoke it by creating an object of Second Form, on the Send Button click event. When I put break points, in that Public Function, I find that the control is flowing through that Public function on cliking the Send button. But the passed value is not displayed. And, I know that is not the standard way to do that. Any sample script for help? Thanks.

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  • Wordpress API: Add / Remove Tags on Posts

    - by st4ck0v3rfl0w
    I know it seems like a simple operation, but I can't find any resource or documentation that explains how to programmatically add and remove tags to a post using the post ID. Below is a sample of what I'm using, but it seems to overwrite all the other tags... function addTerm($id, $tax, $term) { $term_id = is_term($term); $term_id = intval($term_id); if (!$term_id) { $term_id = wp_insert_term($term, $tax); $term_id = $term_id['term_id']; $term_id = intval($term_id); } $result = wp_set_object_terms($id, array($term_id), $tax, FALSE); return $result; }

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  • What's the VB.NET equivalent of this C# code for wiring up and declaring an event?

    - by Ben McCormack
    I'm working on a tutorial to build a media player in Silverlight and am trying to wire up an EventHandler to the timer.Tick event of a DispatchTimer object so that the time of the video is synced with a Slider object. The sample code is in C# and I can't for the life of me figure out the proper syntax in VB.NET with RaiseEvent and/or Handles to wire up the event. Below is the relevant C# code. I'll include comments on where I'm getting stuck. private DispatchTimer timer; public Page() { //... timer = new DispatchTimer(); timer.Interval = TimeSpan.FromMilliseconds(50); timer.Tick += new EventHandler(timer_Tick); // <== I get stuck here b/c // I can't do "timer.Tick += ..." in VB.NET } void timer_Tick(object sender, EventArgs e) { if (VideoElement.NaturalDuration.TimeSpan.TotalSeconds > 0) { sliderScrubber.Value = VideoElement.Position.TotalSeconds / VideoElement.NaturalDuration.TimeSpan.TotalSeconds; } }

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  • How do I get output into Java from a SELECT stored procedure in Oracle?

    - by Ventrue
    I'm using Java to connect to an Oracle 10 Database. I want to create a stored procedure (don't ask why) that takes no arguments and returns a lot of rows. Specifically, in Java I want to be able to get this data with something like: ResultSet rs = stmt.executeQuery("call getChildless"); where getChildless is the query: SELECT objectid FROM Object WHERE objectid NOT IN (SELECT parent FROM subparts); However, I just cannot for the life of me figure out how to get my output from the stored procedure. I've googled it and I get all this sample code that Oracle won't compile, presumably it's for a previous version. Refcursors seem to come up a lot, but I'm not sure if that's what I actually want, to use it with a ResultSet.

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  • Handle leaks with .NET System.Threading.Thread class

    - by Mahno
    I've a problem that number of Handles in my app is continuously growing. I did the debugging and recognize that this is caused by System.Threading.Thread class which is used for some routine. To simplify the debugging I’ve created a sample .NET application: ... private void button1_Click(object sender, EventArgs e) { Thread t = new Thread(DoWork); t.Start(); } public void DoWork(object parameter) { // Do something... } ... Each time I’m clicking the button, a thread is created using System.Threading.Thread class. The problem is that looks like the thread do not frees Handles because each click cause number of Handles growing by ~5. The question is: how can I manually free all Handles created by System.Threading.Thread class? Thanks in advance.

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  • How- XLST Transformation

    - by Yuan Ray
    Just wanted to ask on how to get the author names in the given xml sample below and put an attribut of eq="yes". EQ means Equal Contributors. This is the XML. <ArticleFootnote Type="Misc"> <Para>John Doe and Jane Doe are equal contributors.</Para> </ArticleFootnote> This should be the output in other form of XML. <AuthorGroups> <Authors eq="yes">John Doe</Authors> <Authors eq="yes">Jane Doe</Authors> </AuthorGroups> Assuming that JOhn Doe and Jane Doe are already defined in the list of authors but after the transformation, author tag should have the attribute eq="yes". Please help as I don't know much writing in xlst. Thanks in advance.

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  • How to access a structure member in a function that get it as void* type?

    - by Ahmad
    I want to have a function that accepts different type of structures as argument. So, since I don't have a specific type, I have to use void*. Now question is: when I pass a structure to this function, how can I access a known member of this structure inside the function? Specifically, I know that all structures have str1 as a member and I want, for example, print it. Here is a sample code: struct { char* str1; float tt1; } var1 = {"This is me", 12}; struct { char* str1; int tt2; } var2 = {"This is you", 18}; void printStruct(void* str) { printf("\n the structure string is %s", ??); //can I put something in ?? to print the string? } main(....) { printStruct(&var1); printStruct(&var2); }

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  • Save UIView's representation to file.

    - by fish potato
    What is the easiest way to save UIView's representation to file? My solution is, UIGraphicsBeginImageContext(someView.frame.size); [someView drawRect:someView.frame]; UIImage *image = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); NSString* pathToCreate = @"sample.png"; NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(image)]; [imageData writeToFile:pathToCreate atomically:YES]; but it seems tricky, and I think there must be more efficient way to do this.

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  • Rails: Accessing previous loop in Populator (rake db:populate)

    - by sscirrus
    I am populating my Rails database using populator, and I have a case where I would like to build a series of records where fields start_date and end_date follow seamlessly from each other (from today back into the past). Here is a sample of what I'm doing: Chain.populate 1 do |ch| ch.date_end = DateTime.now ch.date_start = DateTime.civil(DateTime.now.year-rand(40)-1, rand(12)+1, rand(31)+1) end Chain.populate 0..10 do |chs| chs.date_end = Chain.find(:last).date_start chs.date_start = DateTime.civil(chs.date_end.year-rand(10)-1, rand(12)+1, rand(31)+1) end Problem? undefined method 'date_start' for nil:NilClass. I assume the problem is the first Chain record hasn't been saved, so I added: Chain.save # in between the two loops This didn't work either. How can I make this work? Thank you!

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  • Lexing newlines in scala StdLexical?

    - by Nick Fortescue
    I'm trying to lex (then parse) a C like language. In C there are preprocessor directives where line breaks are significant, then the actual code where they are just whitespace. One way of doing this would be do a two pass process like early C compilers - have a separate preprocessor for the # directives, then lex the output of that. However, I wondered if it was possible to do it in a single lexer. I'm pretty happy with writing the scala parser-combinator code, but I'm not so sure of how StdLexical handles whitespace. Could someone write some simple sample code which say could lex a #include line (using the newline) and some trivial code (ignoring the newline)? Or is this not possible, and it is better to go with the 2-pass appproach?

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  • Programming for a 32-bit environment vs programming for a 64-bit environment / Build configurations

    - by Russel
    I was looking at some same code (a sample MS Visual Studio C++ project) recently with multiple build configurations (Release/Debug, Win32/x64). My question: What is the difference? I guess I understand Release/Debug (Release = finalized version of project, Debug = version used to run in debugger), but what things need to be considered when building different versions for Win32/x64 platforms? Is there any coding differences, or does this just affect how that same code is ultimately built into machine code? I know there are different library files depending on whether you're using a 32-bit or 64-bit system as well... Are all of these differences again just machine code? Would a 32-bit library file and its corresponding 64-bit library file be two files with exactly the same functions build from the same source code originally, and only differing in their machine code implementation? Thanks! --Russel

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  • C# to Java: What is a [DefaultProperty("value")]?

    - by Shiftbit
    I do not understand how the DefaultProperty Metadata tag work or what it signifies. I've read the MSDN and went through the sample but I find it confusing. DefaultPropertyAttribute Class I've read a few blogs and they seem to refer to the indexers. I'm not sure why you would want metadata for your properties? I am coming from a Java background, perhaps a Java analogy would help. [DefaultProperty("Value")] public abstract class FOO<T> : ANY, IBAR<T> { public FOO() { } public FOO(T value) { this.Value = value; } public virtual T Value { get; set; } } Follow up: Property Grid

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  • What does setting the GL color before doing a texture mapping operation do?

    - by quixoto
    I am looking at some sample code in a book that creates a jittered antialiasing effect by repeatedly rendering a scene (at different offsets) onto a offscreen texture, then using that texture to repeatedly draw a quad in the main view with some blend stuff set up. To accumulate the color "correctly", the code is setting the color like so: glColor4f(f, f, f, 1); where f is 1.0/number_of_samples, and then binding the offscreen texture and rendering it. Since textures come with their own color and alpha data, what is the effect (mathematically and intuitively) that setting the overall "color" in advance achieves? Thanks.

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  • Android Development - Conversion to Dalvik format failed with error 1

    - by KP65
    So I'm dipping my toes into this area for the first time - i followed instructions to install the android SDK and eclipse plug in. I created a blank new android project and I get the following build errors: [2011-01-08 16:34:55 - xxx]: Dxno classfiles specified [2011-01-08 16:34:55 - xxx] Conversion to Dalvik format failed with error 1 I've googled the problem and tried to clean and rebuild, or hitting F5 on the project in the explorer but the issue remains. I've verified the build paths and the libraries to make sure only Android 2.3 is there but still get this issue. I have also tried to load a sample project and I get the same error. Any ideas?

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  • Does UIActivityIndicator require manual threading on iPhone

    - by Akusete
    I am running creating an iPhone application which performs a costly operation and I wanted to create an activityIndicator to let the user know the application has not frozen. The operation is performed entirely in one event call... so there is no chance for the UI framework to receive control to actually display and animate this indicator. The sample apps which use the UIActivityIndicator (or any other similar animation) start and stop the animation in different events, triggered separately at different stages of the program. Do I need to manually create a separate thread to run my operation in, or is there already default support for this kind of behavior?

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  • SFML 2.0 crashes anytime a method is called

    - by Ken
    This code generates an exception: #include <SFML/Graphics.hpp> #include <SFML/Window.hpp> #include <SFML/System.hpp> int main() { sf::Clock clock; clock.getElapsedTime(); return 0; } However, this doesn't crash: #include <SFML/Graphics.hpp> #include <SFML/Window.hpp> #include <SFML/System.hpp> int main() { sf::Clock clock; return 0; } I'm using SFML 2.0, Windows 7, MinGW 4.70 (Code::Blocks). I don't know why, I followed all instructions to link the libraries and nothing seems to be working. I might be missing something simple through my anger (I've been trying to run sample code for a week, nothing has been working), so can anybody throw me a bone?

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