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• How to check if a variable is defined in a Master file in ASP.NET MVC

  - by Mortanis

  I've got a Site.Master file I've created to be my template for the majority of the site, with a navigation. This navigation is dynamically created, based on a recursive Entity (called Page) - Pages with a parentID of 0 are top level, and naturally each child carries it's parent's Id in that field. I've created a quick little HTML Helper that accepts the ID of an Page and generates the nav by doing a foreach on the children that have a parentId matching the passed Id. On the majority of the site, I want the Site.Master to use a parentId of 0, but if I'm on a strongly typed View displaying a Page, I naturally want to use the Id of the page. Is there a way to do such conditional logic in a Site.Master (and, does that violate MVC rules)? "If I'm on a strongly typed Page of /Page/{Id}, use the Id render nav, else use 0"

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• Invoke Python modules from Java

  - by user36813

  I have a Python interface of a graph library written in C - igraph (the name of library). My need is to invoke the python modules pertaining to this graph library from Java code. It goes like this, the core of library is in c. This core has been imported into Python and interfaces to the functions embedded in core are available in Python. My project's rest of the code is in Java and hence I would like to call the graph functions by Java as well. Jython - which lets you invoke python modules with in Java was an option.I went on trying Jython to discover that it will not work in my case as the core code is in C and Jython wont support anything that is imported as a c dll in python code.I also thought of opting for the approach of calling graph routines directly in c. That is without passing through Python code. I am assuming there must be something which lets you call c code from Java, how ever I am not good in C hence I did not go for it. My last resort seems to execute Python interpreter from command line using Java. But that is a dirty and shameless. Also to deal with the results produced by Python code I will have to write the results in a file and read it back in java. Again dirty way. Is there something that any one can suggest me? Thanks to every one giving time. Thanks Igal for answering. I had a look at it. At first glance it appears as if it is simply calling the python script. Jep jep = new Jep(false, SCRIPT_PATH, cl); jep.set("query", query); jep.runScript(SCRIPT_PATH + file); jep.close(); Isnt it very similar to what we would do if called the python interpreter from command line through a Java code. Runtime runtime = Runtime.getRuntime(); Process proc = runtime.exec("python test.py"); Concern is how do I use the results generated by Python script. The naive way is to write them to file and read it back in Java. I am searching for a smarter approach.Thanks for suggestion anyway.

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• What are the differences and similarities between the .NET languages?

  - by froadie

  I'm trying to figure out how much overlap there is between the different languages of the .NET framework, and what the real differences are. Is there an overlap of libraries/methods/functions...? If I'm googling a question for, say, VB .NET, and C# answers come up, what can I take from the C#-relevant info and what differences/incompatibilities should I look out for?

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• Silverlight: Binding to static value

  - by queen3

  I need TextBlock.Text to be retrieved from translation manager, something like <TextBlock Text="{Binding TranslateManager.Translate('word')}" /> I don't want to set DataSource for all text blocks. The only way I found how to do this is to bind to "static" class and use converter: <TextBlock Text="{Binding Value, Source={StaticResource Translation}, Converter={StaticResource Translation}, ConverterParameter=NewProject}" /> And these helper class public class TranslationManager : IValueConverter { public static string Translate(string word) { return translate(word); } // this is dummy for fake static binding public string Value { get; set; } public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { var name = parameter as string; return TranslationManager.Translate(name, name); } } But, is there a better - shorter - way?

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• Create a UIView Subclass that calls a delegate function whenever it's parent viewController appears?

  - by Andrew Johnson

  UIViewControllers have viewWillAppear, viewDidDisappear, etc. delegate methods. I would like to create a UIView subclass that can be added to a viewController's view, and when that UIViewController apears or disappears, a delegate function is called. I could easily do this by putting function calls in the UIViewController viewWillAppear/viewWillDisappear delegate functions, but how can I encapsulate this behavior in the UIView?

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• Convert number into words using flex.

  - by charlie

  Hi I am trying to convert an entry using a numeric stepper in flex into words to display in a textarea. i.e a user uses the stepper to enter "89" as a value and in the text area the words "Eighty nine" are displayed. After much searching i haven't found anything that helps - a few javascript functions but that is all. any help sample code would be much appreciated. thanks in advance.

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• Android - read and delete new SMS of a specific sender only

  - by John

  I'm trying to write the next function: 1) Send SMS to a service number 2) Read the response SMS content (the service's auto sent-back message that tells me if I succeed/failed to turn on the service) 3) Delete the service's auto-sent SMS I know how to do the first step, and I should be able to do the second with both: getMessageBody () getOriginatingAddress () but: 1) how can I refer the last incoming message to use the above functions? 2) how can I delete that specific message? Thanks, John

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• Building a rails form to filter an index page?

  - by Schroedinger

  G'day guys, I'm having an issue with filtering the presentation of several thousand trade items I have in my system. As per the specs of the system we're building we have to have a form that allows people to put in a start date and then an interval in minutes, to filter the presentation of the items. I've built my helper functions to return all of the trades within that interval period, but I can't for the life of me properly build the form that will return a dateTime value and an integer value within the top of the index page? Any ideas? Would I have to build a separate model object to assign values to, or is there a simpler way?

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• Double Buffering for Game objects, what's a nice clean generic C++ way?

  - by Gary

  This is in C++. So, I'm starting from scratch writing a game engine for fun and learning from the ground up. One of the ideas I want to implement is to have game object state (a struct) be double-buffered. For instance, I can have subsystems updating the new game object data while a render thread is rendering from the old data by guaranteeing there is a consistent state stored within the game object (the data from last time). After rendering of old and updating of new is finished, I can swap buffers and do it again. Question is, what's a good forward-looking and generic OOP way to expose this to my classes while trying to hide implementation details as much as possible? Would like to know your thoughts and considerations. I was thinking operator overloading could be used, but how do I overload assign for a templated class's member within my buffer class? for instance, I think this is an example of what I want: doublebuffer<Vector3> data; data.x=5; //would write to the member x within the new buffer int a=data.x; //would read from the old buffer's x member data.x+=1; //I guess this shouldn't be allowed If this is possible, I could choose to enable or disable double-buffering structs without changing much code. This is what I was considering: template <class T> class doublebuffer{ T T1; T T2; T * current=T1; T * old=T2; public: doublebuffer(); ~doublebuffer(); void swap(); operator=()?... }; and a game object would be like this: struct MyObjectData{ int x; float afloat; } class MyObject: public Node { doublebuffer<MyObjectData> data; functions... } What I have right now is functions that return pointers to the old and new buffer, and I guess any classes that use them have to be aware of this. Is there a better way?

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• Classic string manipulation interview questions?

  - by user189364

  Hi, I am scheduled to have an onsite interview so I am preparing few basic questions. According to the company profile, they are big on string manipulation questions. So far I have manually coded these functions: String length, copy, concat, remove white space Reverse Anagrams Palindrome Please can some can give me a list of more classic string questions which I can practice before going there?

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• Does SQL standard allows whitespace between function names and parenthesis

  - by goran

  Checking few RDBMS I find that things like SELECT COUNT (a), SUM (b) FROM TABLE are allowed (notice space between aggregate functions and parenthesis). Could anyone provide a pointer to SQL standard itself where this is defined (any version will do)?

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• Best way to ensure accurate timing with C

  - by Paul

  I am a beginning C programmer (though not a beginning programmer) looking to dive into a project to teach myself C. My project is music-based, and because of this I am curious whether there are any 'best practices' per-se, when it comes to timing functions.

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• C#, Display plain text in a form

  - by daemonfire300

  I ve made this simple drawing to explain my needs: Plain Text in C# I can only find rather "complex" functions, like RTF Text box etc. I couldn't figure out how to display "plain text" in a Form1.cs (I do not talk about HTML to WinForm) (Search did not return any useful results)

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• Creating a QLineEdit search field for items displayed in a QListView

  - by krunk

  I want to create a search field that filters the items shown in a QListView. Basically the user could type in "foo" and only items with "foo" in the DisplayRole are shown. I already have a few ideas on how to do this, but thought I'd ask those more experienced than I. My idea would be to use some signals and slots to set a filter in the QAbstractItem model and trigger an update() in the QListView. Are there any helper methods in QListView for filtering I may have missed? Is there a canonical way of handling this I haven't run across?

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• OpenGL: the ultimate coordinate system confusion solution?

  - by Newbie

  I'm tired of thinking how the hell my coodinates are working at each case. I heard that I could flip the Y-axis by this code: glScalef(1, -1, 1); But should I? Doesnt this break some other external functions and lighting etc?

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• Internet Explorer and onMouseOver/onMouseOut

  - by Thorbjørn Reimann-Andersen

  Hi all, I have tried looking a similar question on here but couldnt find one so here it comes: I have this html (ignore the "+whatever+@", its in a codebehind file so im putting some variables that im getting from there): <div id='ReferenceContainer"+UniqueID+@"' style='background-color:"+BackcolourOFF+@"; width:"+CompWidth+@"; height:"+CompHeight+@";'> <div id='Reference"+UniqueID+@"' style='width:"+CompWidth+@"; height:"+CompHeight+@"; '> <div id='RefTextContainer"+UniqueID+@"' style='float:left; width:"+CompWidth+@"; height:"+CompHeight+@"; ' > <div id='RefTitleCon' style='margin-top:"+RefTitleMargin+@"px; color:"+RefTitleColor+@"; z-index:-1;' ><p><b>"+RefTitle+@"</b></p> </div> <div id='RefTextCon'><p>"+RefText+@"</p></div> </div> <div id='RefPicContainer"+UniqueID+@"' style='float:right;'> <img id='RefImg"+UniqueID+@"first' class='first' name='RefImg"+UniqueID+@"' src=" + StartImg + @" style='position:absolute;' ></img> <img id='RefImg"+UniqueID+@"second' class='second' name='RefImg"+UniqueID+@"' src=" + AltImg + @" style='display:none;' ></img> </div> </div> <div id='ScriptContainer"+UniqueID+@"' style='width:"+CompWidth+@"; height:"+CompHeight+@"; position:relative; top:-"+CompHeight+@"px; left:0px;' onMouseOver='ChangeBackcolourON"+UniqueID+@"()' onMouseOut='ChangeBackcolourOFF"+UniqueID+@"()'></div> </div> Now in firefox, everything works just perfect. The div "ScriptContainer" sits in front of the whole thing and when the mouse enters or leaves the functions work exactly as they should. But IE8 places the text in front of everything and then the functions do not work as i would like them to. "ChangeBackcolourOFF" gets called every time the mouse enters the text, which sits in front of everything and "ChangeBackcolourON" gets called every time the mouse enters the "Scriptcontainer" from the text. So i either need to figure out how to force the text to be placed behind the "Scriptcontainer" or some other solutions. I appreciate you answers

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• ebook reader for programming books?

  - by Martin

  Are the current ebook readers good enough for reading programming books (containing diagrams, source-code, screenshots, and so on)? How good are the search functions or the possibilities to set bookmarks, to use a book as a reference? I'd like to hear opinions of ebook reader owners to help me decide whether or not I should buy an ebook reader. (I know this question already exists, but it's over one year old and new ebook readers are now available)

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• .net clipboard metadata (or whatever skype quotations use)

  - by Cyclone

  Is it possible to use the Clipboard class to grab all the data from the clipboard, like full skype quotes? They use some kind of metadata I think, which is how it knows when something is a quote or not. How can I access that from the Clipboard class? What functions would I call to set/restore Skype quotations? Thanks for the help!

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• How can I run a joomla project?

  - by Mike Redford

  Hi guys, I get a joomla template, but I can't run it. I copy it to htdocs folder in Apache(XAMPP) and it return this : "Restricted access" defined('_JEXEC') or die('Restricted access'); // no direct access require_once dirname(__FILE__) . DIRECTORY_SEPARATOR . 'functions.php'; please kindly advise me, Cheers, Mike

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• Linq to Sql, Repositories, and Asp.Net MVC ViewData: How to remove redundancy?

  - by Dr. Zim

  Linq to SQL creates objects which are IQueryable and full of relations. Html Helpers require specific interface objects like IEnumerable<SelectListItem>. What I think could happen: Reuse the objects from Linq to SQL without all the baggage, i.e., return Pocos from the Linq to SQL objects without additional Domain Model classes? Extract objects that easily convert to (or are) Html helper objects like the SelectListItem enumeration? Is there any way to do this without breaking separation of concerns? Some neat oop trick to bridge the needs? For example, if this were within a repository, the SelectListItem wouldn't be there. The select new is a nice way to cut out an object from the Linq to SQL without the baggage but it's still referencing a class that shouldn't be referenced: IEnumerable<SelectListItem> result = (from record in db.table select new SelectListItem { Selected = record.selected, Text= record.Text, Value= record.Value } ).AsEnumerable();

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• Problem with MvcContrib

  - by Sasha

  I want to use MvcContrib Grid helper, but i stuck on the problem - it's not working. I downloaded release for mvc 1, i have dll on my hard drive, i added a reference to my project, but i always getting following error: 'System.Web.Mvc.HtmlHelper' does not contain a definition for 'Grid' and no extension method 'Grid' accepting a first argument of type 'System.Web.Mvc.HtmlHelper' could be found (are you missing a using directive or an assembly reference?) I am using Visual Web Developer 2008 if this is important The question is: how correctly add this to my project? Can you give me step by step instruction? Thanks

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• How Can I Get the Arguments of Function Calls from the Firebug Profiler?

  - by purefusion

  Firbug profiler outputs the functions called, but not the arguments/parameters of each function call. Is there any way to get those arguments? I've dug through the DOM tab for any of the given function calls that I know would have to have had some arguments, but was unsuccessful in pulling out any details.

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• READING WEBSITE CONTENTS JAVA

  - by Sahil Manchanda

  IM DEVELOPING AN ANDROID APPLICATION WHERE in a website i PROGRAMMATICALLY submit data into search box and retrieve results by JAVA. i get the data by using URLConnect JAVA. i get the source code ie html code...... Urlconnection a = .connect to host getinputstream read data i use these functions now if the site has content like: sahil 3/5 patel chowk 965955 since these details will be inside html tags i want to extract this information . any idea

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• ruby-on-rails: route not found in partial

  - by cbrulak

  I have a controller: twitter_status with two functions: tweet_post tweet_comment in routes.rb I have map.resources :twitter_status In my show post view, I have a partial: _show and _show_comment In _show I have: tweet_post_twitter_status_path (...) and that works fine. But in the in _show_comment partial I have: tweet_comment_twitter_status_path (...) but I have a NoMethodError in the show.html.erb view. Any ideas?

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• How to properly read 16 byte unsigned integer with BinaryReader

  - by Brent

  I need to parse a binary stream in .NET to convert a 16 byte unsigned integer. I would like to use the BinaryReader.ReadUIntXX() functions but there isn't a BinaryReader.ReadUInt128() function available. I assume I will have to roll my own function using the ReadByte function and build an array but I don't know if this is the most efficient method? Thanks!

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