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  • What is the current state of Unit testing support in the R language

    - by PaulHurleyuk
    R is a statistics programming language. Part of R is the use of Packages, which themselves are written in the R language. Programming best practice includes the use of unit-testing to test the functions within these packages while they are being written and when they are used. I am aware of a few packages for unit testing within R, these being RUnit Svunit Testthat I'm interested to know; Are there any other packages out there ? Given peoples experience, do these packages excel at different things ? What's the current state of the art in unit testing for R ?

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  • Tools for code snippet execution

    - by nzpcmad
    By "code snippet execution", I mean the ability to write a few lines of code, run and test it without having to fire up an IDE and create a dummy project. It's incredibly useful for helping people with a small code sample without creating a project, compiling everything cleanly, sending them the code snippet and deleting the project. I'm not asking about the best code snippets or a snippet editor or where to store snippets! For C#, I use Snippet Compiler. For Java, I use Eclipse Scrapbook. For LINQ, I use LINQPad. Any suggestions for other (better?) tools? e.g. is there one for Java that doesn't involve firing up Eclipse? What about C?

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  • how to autocenter jquery ui dialog whenb resizing browser?

    - by Jorre
    When you use jquery UI dialog, all works well, except for one thing. When the browser is resized, the dialog just stays in it's initial position which can be really annoying. You can test it out on: http://jqueryui.com/demos/dialog/ Click on the "modal dialog" example and resize your browser. I'd love to be able to let dialogs autocenter when the browser resizes. Can this be done in an efficient way for all my dialogs in my app? Thanks a lot!

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  • What is the scope of JS variables in anonymous functions

    - by smorhaim
    Why does this code returns $products empty? If I test for $products inside the function it does show data... but once it finishes I can't seem to get the data. var $products = new Array(); connection.query($sql, function(err, rows, fields) { if (err) throw err; for(i=0; i< rows.length; i++) { $products[rows[i].source_identifier] = "xyz"; } }); connection.end(); console.log($products); // Shows empty.

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  • Project change makes qtp to fail

    - by Onnesh
    We are using 2 or more projects in an application to be opened. For e.g. HT1000 & HT1200 will be opened by the application, objects are the same(or common) for both the projects. Code uses the values in excel framework for running the test cases as parent to identify the child objects for e.g. Window("HT1000").Dialog("parts").Click("OK") but when we just change the parent name in excel framework as "HT1200" the objects for HT1200 are not getting accessed. How to resolve this? Is it needed to again add the HT1200 project & objects in the object repo of qtp?

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  • Understanding the workings of equals and hashCode in a HashMap

    - by andandandand
    I have this test code: import java.util.*; class MapEQ { public static void main(String[] args) { Map<ToDos, String> m = new HashMap<ToDos, String>(); ToDos t1 = new ToDos("Monday"); ToDos t2 = new ToDos("Monday"); ToDos t3 = new ToDos("Tuesday"); m.put(t1, "doLaundry"); m.put(t2, "payBills"); m.put(t3, "cleanAttic"); System.out.println(m.size()); } } class ToDos{ String day; ToDos(String d) { day = d; } public boolean equals(Object o) { return ((ToDos)o).day == this.day; } // public int hashCode() { return 9; } } When // public int hashCode() { return 9; } is uncommented m.size() returns 2, when it's left commented it returns three. Why?

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  • Inserting non-pod struct into a GHashTable

    - by RikSaunderson
    Hi there, I'm trying to build a GHashTable of instances of a struct containing ints, a time_t and a few char*'s. My question is, how do you insert an instance of a struct into a GHashTable? there are plenty of examples of how to insert a string or an int (using g_str_hash and g_int_hash respectively), but I'm guessing thatI want to use the g_direct_hash, and I can't seem to find any examples of that. Ideally, my code would look like this: GHashtable table; table = g_hash_table_new(g_direct_hash, g_direct_equal); struct mystruct; mystruct.a = 1; mystruct.b = "hello"; mystruct.c = 5; mystruct.d = "test"; g_hash_table_insert(table,mystruct.a,mystruct); Clearly, this is incorrect as it does not compile. Can anyone provide an example that does do what I want? Thanks, Rik

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  • PHP reading 'get' variable that may or may not have been set

    - by thecoshman
    Simply put, if you try to read the value of a get variable, what happens if said variable had not be put into the URL. Example: you request the page test.php, in that file it tries to read the value of $_GET['message']. What happens in this case? dose the value just get returned as ''? Dose this mean, that if I am always expecting a value to be entered, and am not willing to accept a value of '' that I can just do something like $foo = $_GET['bar']; if($foo == ''){ // Handle my 'error' } else { // $foo should now have a value that I can work with } Please bare in mind I know that I could use isset($_GET['bar']) But I don't just want to know if it is set, I don't care if it is or not, I just care if it has a value that is more then just an empty string.

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  • Anyone have any issues with using PLINQO and ASP.NET MVC 2.0?

    - by Chad
    I'm asking because I'm working on an ASP.NET MVC 1.0 site, thinking of upgrading to ASP.NET MVC 2.0. Then I read that PLINQO 5.0 was released (I had never heard of PLINQO before) and have been impressed with what PLINQO appears to be capable of. 1) Is PLINQO capable of building out an ASP.NET MVC 2.0 UI project when it's run? 2) Have you had any bad experiences using PLINQO (particularly in an ASP.NET MVC app)? Let me make sure I have the scenario right in my mind: Using PLINQO (assuming it supports ASP.NET MVC 2.0), I should be able to point it to my DB and it will create 3 projects: data, test, and mvc 2.0 UI? The data would contain LINQ to SQL queries, with the PLINQO extensions added in and the other projects setup to use the data project by default?

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  • C# Expression Tree Simple Arithmetic

    - by Richard Adnams
    Hello, I've been trying to figure out how to achieve some simple maths using the Expression class. What I'm trying to do is this (1 + 10 * 15) When I try to do this via Expression.Add and Expression.Constant but the result I get is this ((1 + 10) * 15) Which is not right as it evaluates the 1 + 10 first instead of 10 * 15. Is there a way to combine Expression.Add/Multiply etc.. without it creating the brackets? I assume there is but I just can't find where or how! The test code I have is this var v1 = Expression.Constant(1, typeof(int)); var v2 = Expression.Constant(10, typeof(int)); var v3 = Expression.Constant(15, typeof(int)); var a1 = Expression.Add(v1, v2); var m2 = Expression.Multiply(a1, v3); Thanks for your time, Richard.

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  • Sending data recursively using jquery $.ajax gives stack overflow error..

    - by Rosdi
    Why am I getting "too much recursion" error when I do the following? function sendTheNames() { alert("start submitting names.."); return function (array) { var name = $(array.shift()).text(); $.ajax({ url: "test.jsp?name=" + name, complete: function () { if (array.length > 0) { return arguments.callee(array); } } }); }; } $(document).ready(function () { var selectedNames = []; $('ul li input:checked').each(function () { selectedNames.push($(this).parent()); }); alert("begin"); sendTheNames()(selectedNames); alert("done"); });

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  • How to model a social news feed on Google App Engine

    - by PEZ
    We want to implement a "News feed" where a user can see messages broadcasted by her friends, sorted with newest message first. But the feed should reflect changes in her friends list. (If she adds new friends, messages from those should be included in the feed, and if she removes friends their messages should not be included.) If we use the pubsub-test example and attach a recipient list to each message this means a lot of manipulation of the message recipients lists when users connect and disconnect friends. We first modeled publish-subscribe "fan out" using conventional RDBMS thinking. It seemed to work at first, but then, since the IN operator works the way it does, we quickly realized we couldn't continue on that path. We found Brett Slatkin's presentation from last years Google I/O and we have now watched it a few times but it isn't clear to us how to do it with "dynamic" recipient lists. What we need are some hints on how to "think" when modeling this.

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  • Rails Unit Testing with MyISAM Tables

    - by tadman
    I've got an application that requires the use of MyISAM on a few tables, but the rest are the traditional InnoDB type. The application itself is not concerned with transactions where it applies to these records, but performance is a concern. The Rails testing environment assumes the engine used is transactional, though, so when the test database is generated from the schema.rb it is imported with the same engine. Is it possible to over-ride this behaviour in a simple manner? I've resorted to an awful hack to ensure the tables are the correct type by appending this to test_helper.rb: (ActiveRecord::Base.connection.select_values("SHOW TABLES") - %w[ schema_info ]).each do |table_name| ActiveRecord::Base.connection.execute("ALTER TABLE `#{table_name}` ENGINE=InnoDB") end Is there a better way to make a MyISAM-backed model be testable?

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  • JQuery XML option node

    - by JD
    hi, I am having an issue with parsing XML with JQuery when there is a node with an option node <preferences><dashboard> <report id="si_pg_vw" order="0"> <header> <data> <option type="reportname" value="Page View"/> </data> </header> </report> the following code in firebug returns no children $reportElement.find("data")[0] however if I change option to any other value ("option2", "test" etc) then the line above returns one child which is correct. Am I mising something or is there a bug? Thanks John

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  • NHibernate ManyToMany Relationship Cascading AllDeleteOrphan StackOverflowException

    - by Chris
    I have two objects that have a ManyToMany relationship with one another through a mapping table. Though, when I try to save it, I get a stack overflow exception. The following is the code for the mappings: //EventMapping.cs HasManyToMany(x => x.Performers).Table("EventPerformer").Inverse().Cascade.AllDeleteOrphan().LazyLoad().ParentKeyColumn("EventId").ChildKeyColumn("PerformerId"); //PerformerMapping.cs HasManyToMany<Event>(x => x.Events).Table("EventPerformer").Inverse().Cascade.AllDeleteOrphan().LazyLoad().ParentKeyColumn("PerformerId").ChildKeyColumn("EventId"); When I change the performermapping.cs to Cascade.None() I get rid of the exception but then my Event Object doesn't have the performer I associate with it. //In a unit test, paraphrased event.Performers.Add(performer); //Event eventRepository.Save<Event>(event); eventResult = eventRepository.GetById<Event>(event.id); //Event eventResult.Performers[0]; //is null, should have performer in it How should I be writing this properly? Thanks

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  • QTest::keyPress is not returning nativeScanCode

    - by vels
    Hi, I am simulating F1 key using QTest::keyPress() method to test keypress event, on simulation of F1 key when i check for nativeScanCode, it returns 0 value. can any one help? //Code snippet //To simulate F1 key press QTest::keyPress(&kboard, Qt::Key_F1); //To check keypress Event void keyboard::keyPressEvent(QKeyEvent* ke) { if ( ke->type() == QEvent::KeyPress ) { QKeyEvent* key_event = static_cast<QKeyEvent *>(ke); //To check F1 key simulation if (key_event->key() == Qt::Key_F1) { int nativeCode = key_event->nativeScanCode(); qDebug()<< nativeCode <<endl; } } } Thanks, vels

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  • How do you perform macro expansion within #ifdef?

    - by Malvineous
    Hi all, I have some fairly generic code which uses preprocessor macros to add a certain prefix onto other macros. This is a much simplified example of what happens: #define MY_VAR(x) prefix_##x "prefix_" is actually defined elsewhere, so it will be different each time the file is included. It works well, but now I have some code I would like to skip if one of the tokens doesn't exist, but this doesn't work: #if defined MY_VAR(hello) What I want it to expand to is this: #ifdef prefix_hello But I can't figure out how. I need to use the MY_VAR() macro to do the expansion, so I can't just hardcode the name. (It's actually for some testing code, the same code gets included with a different prefix each time to test a bunch of classes, and I want to skip a couple of tests for a handful of the classes.) Is this possible with the C++ preprocessor?

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  • HTML-5 : video tag. Video not playing

    - by Microkernel
    Hi guys, I was trying use/test video tag of HTML-5. Here is the code <!DOCTYPE HTML> <html> <body> <video src="./Pilot.avi" controls="controls"> your browser does not support the video tag </video> </body> </html> Pilot.avi is stored in the same same directory as this HTML page. The problem is, I am seeing the controls being displayed but can't play the video. I tried with, 1) Mozilla Firefox 3.6.13 2) Google Chrome 8.0.552.224 What could be the problem? Regards, Microkernel

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  • Why doesnt R.raw.'songname' not work on android devices?

    - by James Rattray
    I have some media (Audio tracks) on an app... With file path 'R.raw.test' I use some code to get it into a mediaplayer... MediaPlayer.create(Textbox.this, R.raw.fly); And it works PERFECTLY on the Android Emulator... (Plays track on click of button) Can someone explain why, when I put it on my Archos (5 IT) it doesnt work at all? -As soon as the button is clicked, it crashes... Do you have to do something to file paths or what? Please help... Thanks alot... James

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  • What are the best tools for Sql Server version control

    - by Mendy
    After reading this post, and the suggestion to use Team Edition for Database Professionals, I want to know is there any equivalent to this for SQL server 2008 / Visual stuio 2010 ultimate. I'm looking for tool need to do all the thing that Jeff mention in his article: Create test data. Schema comparison. Data comparison. Database unit testing. Refactoring. Integrated T-SQL editor, a first class language construct in the IDE, just like C# and VB.NET.

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  • ASP.NET aspxerrorpath in URL

    - by theog
    I have a site where I use CustomErrors in the web.config to specify a custom error page, and that's working just fine. The custom 404 page is also specified in the IIS configuration (because if it's not, I don't get my custom 404 page). But I have some logic that kicks in if a user gets a 404 that looks at their requested URL and make a navigation suggestion, if appropriate. This logic relies on the aspxerrorpath value. On my development PC, the aspxerrorpath is correctly appended to the URL, like so: http://localhost:3092/FileNotFound.aspx?aspxerrorpath=/badpage.aspx, but on my test site, there's no aspxerrorpath appended to the URL, so all of my custom logic is bypassed and my suggestions don't work. I'm not sure if this is an IIS config issue or something else. The web server is Windows Server 2008 with IIS 7. Any thoughts? Many Thanks.

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  • Compile Error Using MutableClassToInstanceMap with Generics

    - by user298251
    I am getting the following compile error "The method putInstance(Class, T) in the type MutableClassToInstanceMap is not applicable for the arguments (Class, Number)" on the putInstance method call. Does anyone know what I am doing wrong?? Thanks! public class TestMutableClassToInstanceMap { public final MutableClassToInstanceMap<Number> identifiers = MutableClassToInstanceMap.create(); public static void main(String[] args) { ArrayList<Number> numbers = new ArrayList<Number>(); numbers.add(new Integer(5)); TestMutableClassToInstanceMap test = new TestMutableClassToInstanceMap(numbers); } public TestMutableClassToInstanceMap(Collection<Number> numbers){ for (Number number : numbers) { this.identifiers.putInstance(number.getClass(), number); //error here } this.identifiers.putInstance(Double.class, 5.0); // This works } }

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  • The property 'IsDataSource' was not found in type 'ViewModelLocator

    - by dieter-preconsult-be
    Hello I have the following code: <UserControl x:Class="TestApp.View.ViewAlarmLog" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:Custom="http://schemas.microsoft.com/wpf/2008/toolkit" xmlns:mvvm="clr-namespace:Test.ViewModel"> <UserControl.Resources> <ResourceDictionary > <ResourceDictionary.MergedDictionaries> </ResourceDictionary.MergedDictionaries> <mvvm:ViewModelLocator x:Key="Locator" d:IsDataSource="True"/> </ResourceDictionary> </UserControl.Resources> the problem is dat i always get an error: The property 'IsDataSource' was not found in type 'ViewModelLocator'. " What could be the problem here ? Redgards Dieter

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  • Best way to auto-restore db on an houlry basis

    - by aron
    Hello, I have a demo site where anyone can login and test a management interface. Every hour I would like to flush all the data in the SQL 2008 Database and restore it from the original. Rae Gate sql has some awesome tools for this, however they are beyond my budget right now. Could I simply make a backup copy of the database's data file, then have a c# console app that deletes it and copies over the original. Then I can have a windows schedule task to run the .exe every hour. It's simple and free... would this work? I'm using SQL Server 2008 R2 Web edition I understand that red gate is technically better because I can set it to analyze the db and only update the records that were altered, and the approach I have above is like a "sledge hammer".

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  • HTTP Data chunks over multiple packets?

    - by myforwik
    What is the correct way for a HTTP server to send data over multiple packets? For example I want to transfer a file, the first packet I send is: HTTP/1.1 200 OK Content-type: application/force-download Content-Type: application/download Content-Type: application/octet-stream Content-Description: File Transfer Content-disposition: attachment; filename=test.dat Content-Transfer-Encoding: chunked 400 <first 1024 bytes here> 400 <next 1024 bytes here> 400 <next 1024 bytes here> Now I need to make a new packet, if I just send: 400 <next 1024 bytes here> All the clients close there connections on me and the files are cut short. What headers do I put in a second packet to continue on with the data stream?

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