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• Erlang programming exercises

  - by valya

  I'm learning Erlang. I've moved from Haskell so I don't want to and have to learn functional programming. But Erlang is quite specific because of the microprocesses. So, can you give me some examples which will be simple to test and measure and use all the power of Erlang?

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• psql : Convert the time to seconds

  - by pavun_cool

  Hi all. I have time value 04:30:25 , I want to convert this to seconds . Is there any dedicated function to do this...? I know that we can extract hours ,minutes, seconds then we can calculate the second . SELECT extract ( hour from t ) * 60*60 + extract ( minutes from t ) * 60 + extract ( seconds from t ) from test ; But I want some other way... Thanks

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• to stop trigger in jquery

  - by Alexander Corotchi

  Hi everybody , I have an AJAX call, which is doing this call every 5 seconds and when the call "succeed " I have a trigger success: function (msg) { ... $('#test').trigger('click'); return false; }, ... But i need to do this trigger just once , the first time, not every 5 second ! Can somebody suggest me how to stop this trigger, or maybe to use another stuff to trigger this "click " Thanks!

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• Unit testing in python?

  - by yossi.ittach

  Hey - I'm new to python , and I'm having a hard time grasping the concept of Unit testing in python. I'm coming from Java - so unit testing makes sense because - well , there you actually have a unit - A Class. But a Python class is not necessarily the same as a Java class , and the way I use Python - as a scripting language - is more functional then OOP - So what do you "unit test" in Python ? A flow? Thanks!

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• what are the differences between a Unit testing and Integration testing?

  - by coder

  I would like to get to know what other developers think related to unit/integration testing. As far as i know, unit testing is your test code that tests your original code. integration testing are those that tests the overall system. whats your opinion this?

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• Understanding PTS and DTS in video frames

  - by theateist

  I had fps issues when transcoding from avi to mp4(x264). Eventually the problem was in PTS and DTS values, so lines 12-15 where added before av_interleaved_write_frame function: 1. AVFormatContext* outContainer = NULL; 2. avformat_alloc_output_context2(&outContainer, NULL, "mp4", "c:\\test.mp4"; 3. AVCodec *encoder = avcodec_find_encoder(AV_CODEC_ID_H264); 4. AVStream *outStream = avformat_new_stream(outContainer, encoder); 5. // outStream->codec initiation 6. // ... 7. avformat_write_header(outContainer, NULL); 8. // reading and decoding packet 9. // ... 10. avcodec_encode_video2(outStream->codec, &encodedPacket, decodedFrame, &got_frame) 11. 12. if (encodedPacket.pts != AV_NOPTS_VALUE) 13. encodedPacket.pts = av_rescale_q(encodedPacket.pts, outStream->codec->time_base, outStream->time_base); 14. if (encodedPacket.dts != AV_NOPTS_VALUE) 15. encodedPacket.dts = av_rescale_q(encodedPacket.dts, outStream->codec->time_base, outStream->time_base); 16. 17. av_interleaved_write_frame(outContainer, &encodedPacket) After reading many posts I still do not understand: outStream->codec->time_base = 1/25 and outStream->time_base = 1/12800. The 1st one was set by me but I cannot figure out why and who set 12800? I noticed that before line (7) outStream->time_base = 1/90000 and right after it it changes to 1/12800, why? When I transcode from avi to avi, meaning changing the line (2) to avformat_alloc_output_context2(&outContainer, NULL, "avi", "c:\\test.avi"; , so before and after line (7) outStream->time_base remains always 1/25 and not like in mp4 case, why? What is the difference between time_base of outStream->codec and outStream? To calc the pts av_rescale_q does: takes 2 time_base, multiplies their fractions in cross and then compute the pts. Why it does this in this way? As I debugged, the encodedPacket.pts has value incremental by 1, so why changing it if it does has value? At the beginning the dts value is -2 and after each rescaling it still has negative number, but despite this the video played correctly! Shouldn't it be positive?

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• Windows Server 2008 on VPC (Host: Win 7)?

  - by Dan

  Is it possible to test Windows 2008 server via VPC when my host of a Windows 7 machine? I don't see anywhere where it says this is possible? The only VPC images (Windows 2008 R2) that I download from Microsoft state that the host machine must be Windows 2008. Is there an alternative?

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• Changing the order of arguments in ruby sprintf

  - by railscoder

  Is it possible to change the order of parameters to sprintf fun? like sprintf(" this is %arg[2] test %arg[1]" , arg1, arg2) i need to dynamically change the order of the arguments. so is that possible with sprintf?

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• Setting a under construction page for IIS6.

  - by Malcolm

  Hi, I have an .NET 1.1 web app and I am upgrading to ASP.NET MVC 1.0 app in IIS6. How do I put up a under construction page so uses see it? And secondly how can I install the new site and test under this scenario of having an under construction page?? Malcolm

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• conver Binary data to PDF in C#

  - by acadia

  How do I convert byte[] into a PDF document in C#? I want to create a PDF file from the byte[] into c:/PDF/test.pdf

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• Specifying properties when initialising

  - by maxp

  void Foo() { bool ID = "test"; var testctrl = new Control() {ID = (ID**=="abc"?ID:ID**)}; } Is it possible to get the value of ID** in the code above? The problem is they both have the same property names. Please ignore the fact the specific ID assignment is pointless, im just using it as an example.

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• Testing the context in asp.net mvc

  - by user252160

  I got pretty experienced with testing controllers, my question here is though, aren't we supposed to test the data context as well, and how ? I mean, there are a lot of relationships and constraints coming from the DB that simply testing controllers does not cover. On the other hand, testing against the DB is not considered a good practice - what then ? Simply testing without db.SubmitChanges() or what ?

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• Cannot complete a JSONP call from jQuery to WCF

  - by Dusda

  Okay, I am trying (poorly) to successfully make a JSONP call from jQuery on a test page to a WCF web service running locally, as a cross-domain call. I have, at one point or another, either gotten a 1012 URI denied error, gotten a response but in Xml, or just had no response at all. Currently, the way I have it configured it spits back a 1012. I did not write this web service, so it is entirely possible that I am just missing a configuration setting somewhere, but I've become so frustrated with it that I think just asking on here will be more productive. Thanks guys. Details below. I have a WCF web service with the following method: [ScriptMethod(ResponseFormat = ResponseFormat.Json)] public decimal GetOrderStatusJson(int jobId) I am trying to call this method from a jQuery test page, via a cross-domain JSONP call. <script type="text/javascript"> getJsonAjaxObject( "http://localhost:3960/ProcessRequests.svc/json/GetOrderStatusJson", { "jobId": 232 }); function getJsonAjaxObject(webServiceUrl, jsonData) { var request = { type: "POST", contentType: "application/json; charset=utf-8", url: webServiceUrl, data: jsonData, dataType: "jsonp", success: function(msg) { //success! alert("blah"); }, error: function() { //oh nos alert("bad blah"); } }; $.ajax(request); } </script> Below are the chunks of the web.config I configure for this purpose: <services> <service behaviorConfiguration="MWProcessRequestWCF.ProcessRequestsBehavior" name="MWProcessRequestWCF.ProcessRequests"> <endpoint address="json" behaviorConfiguration="AspNetAjaxBehavior" binding="webHttpBinding" contract="MWProcessRequestWCF.IProcessRequests" /> <endpoint address="" binding="wsHttpBinding" contract="MWProcessRequestWCF.IProcessRequests"> <identity> <dns value="localhost" /> </identity> </endpoint> <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" /> </service> </services> <behaviors> <serviceBehaviors> <behavior name="MWProcessRequestWCF.ProcessRequestsBehavior"> <serviceMetadata httpGetEnabled="true"/> <serviceDebug includeExceptionDetailInFaults="false"/> </behavior> </serviceBehaviors> <endpointBehaviors> <behavior name="AspNetAjaxBehavior"> <enableWebScript/> </behavior> </endpointBehaviors> </behaviors>

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• Dynamic Linq help, different errors depending on object passed as parameter?

  - by sah302

  I have an entityDao that is inherbited by everyone of my objectDaos. I am using Dynamic Linq and trying to get some generic queries to work. I have the following code in my generic method in my EntityDao : public abstract class EntityDao<ImplementationType> where ImplementationType : Entity { public ImplementationType getOneByValueOfProperty(string getProperty, object getValue){ ImplementationType entity = null; if (getProperty != null && getValue != null) { LCFDataContext lcfdatacontext = new LCFDataContext(); //Generic LINQ Query Here entity = lcfdatacontext.GetTable<ImplementationType>().Where(getProperty + " =@0", getValue).FirstOrDefault(); //.Where(getProperty & "==" & CStr(getValue)) } //lcfdatacontext.SubmitChanges() //lcfdatacontext.Dispose() return entity; } }         Then I do the following method call in a unit test (all my objectDaos inherit entityDao): [Test] public void getOneByValueOfProperty() { Accomplishment result = accomplishmentDao.getOneByValueOfProperty("AccomplishmentType.Name", "Publication"); Assert.IsNotNull(result); } The above passes (AccomplishmentType has a relationship to accomplishment) Accomplishment result = accomplishmentDao.getOneByValueOfProperty("Description", "Can you hear me now?"); Accomplishment result = accomplishmentDao.getOneByValueOfProperty("LocalId", 4); Both of the above work Accomplishment result = accomplishmentDao.getOneByValueOfProperty("Id", New Guid("95457751-97d9-44b5-8f80-59fc2d170a4c"))       Does not work and says the following: Operator '=' incompatible with operand types 'Guid' and 'Guid Why is this happening? Guid's can't be compared? I tried == as well but same error. What's even moreso confusing is that every example of Dynamic Linq I have seen simply usings strings whether using the parameterized where predicate or this one I have commented out: //.Where(getProperty & "==" & CStr(getValue)) With or without the Cstr, many datatypes don't work with this format. I tried setting the getValue to a string instead of an object as well, but then I just get different errors (such as a multiword string would stop comparison after the first word). What am I missing to make this work with GUIDs and/or any data type? Ideally I would like to be able to just pass in a string for getValue (as I have seen for every other dynamic LINQ example) instead of the object and have it work regardless of the data Type of the column.

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• Accessing array values in jQuery ajax callback function

  - by gibberish

  Values are received through a jQuery AJAX callback, but I've been unsuccessful getting at the values. Here's the ajax call: $.ajax({ type: "POST", url: "ajax/ax_all_ajax_fns.php", data: 'request=edit_timecard_entry&staff_id='+staff_id+'&tid='+tid, success: function(data){ alert(data); } } Here's the code sent out by ax_all_ajax_fns.php: $staff_id = $_POST['staff_id']; $t_id = $_POST['tid']; $rCard = mysql_query("SELECT `staff_id`, `date`, `project_id`, `project_num`, `task_desc`, `hours` FROM `timecards` WHERE `t_id`='$t_id'"); $aCard = mysql_fetch_assoc($rCard); print_r($aCard); // echo $aCard; Of course, I don't want the information print_r'd, I want it echoed. The print_r was used to demonstrate that the correct data was sent out by the PHP script, and it is echoed successfully in the alert() box in the success function. So the correct data is being returned, and (if correctly formatted) it is viewable. The data returned in this way looks like this in the alert() popup: Array ( [staff_id] => 51 [date] => 2012-10-18 [project_id] => 0 [project_num => 49 [task_desk] => This is a task [hours] => 3.30 ) But when I use echo to output the $aCard array and then try to break it down inside the success function of the ajax call, I can't figure out how to get at the values. My attempts have consistently returned values of "undefined". In the success function, in place of alert(data);, I've tried this: var tce_staff_id = data['staff_id']; alert(tce_staff_id); and this: var tce_staff_id = data.staff_id; alert(tce_staff_id); What am I missing? UPDATE: Thanks to Martin S. for information re json_encode() PHP instruction. I've modified the ajax script as follows: echo json_encode($aCard); I now get THIS result from alert(data); in the success function: {"staff_id":"51","date":"2012-10-18","project_id":"0","project_num":"49","task_desc":"This is a task","hours":"3.30"} However, the following returns "undefined": alert(data.staff_id); alert(data[0].staff_id); var test = data.staff_id; alert(test); Can anyone see what I'm missing? All above code comes immediately after alert(data) inside the success callback of the ajax function. alert(data) DOES work and displays the desired data, as above.

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• How should I use https in Ruby on Rails

  - by Daniel Cukier

  I'm developing an application in Rails (2.3.4) and there are some parts that need to run over a secure protocol, for example, the login form, the credit card form, etc. How can I do just these pages be https, and all other pages remain http? How can I test ssl in development environment?

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• Testing JavaMail Related Modules

  - by Hamza Yerlikaya

  Part of my application depends on JavaMail, moving arranging messages etc. Is it possible to test this module without firing a IMAP server to run the tests on? I am always stuck when it comes to testing stuff that depends on external servers or modules.

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• wcf metadata service page url

  - by Neil B

  I have a service with the metadata exposed. Trouble is when I browse to the wsdl the service page it has the machine name as below: MasterLibrary Service You have created a service. To test this service, you will need to create a client and use it to call the service. You can do this using the svcutil.exe tool from the command line with the following syntax: svcutil.exe http://mymachine/Master/Master.svc?wsdl How do I make it show it as: http://www.url.co.uk/Master/Master.svc?wsdl

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• How can I adjust the CommandTImeout in DbFit for long running queries?

  - by Ben Farmer

  Is there any way to increase the CommandTimeout for DbFit queries? I have a long running stored procedure that times out when running it in a DbFit Test. It's possible for the procedure to run for a really long time (processing millions of records) and would like to have DbFit wait until it's completed, even if it takes several minutes. We are using the latest version of FitSharp (downloaded it yesterday) and use the version of DbFit that is included with FitSharp.

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• PNGException "crc corruption" when attempting to create ImageIcon objects from ZIP archive

  - by Nathan Strong

  I've got a ZIP file containing a number of PNG images that I am trying to load into my Java application as ImageIcon resources directly from the archive. Here's my code: import java.io.*; import java.util.Enumeration; import java.util.zip.*; import javax.swing.ImageIcon; public class Test { public static void main( String[] args ) { if( args.length == 0 ) { System.out.println("usage: java Test.java file.zip"); return; } File archive = new File( args[0] ); if( !archive.exists() || !archive.canRead() ) { System.err.printf("Unable to find/access %s.\n", archive); return; } try { ZipFile zip = new ZipFile(archive); Enumeration <? extends ZipEntry>e = zip.entries(); while( e.hasMoreElements() ) { ZipEntry entry = (ZipEntry) e.nextElement(); int size = (int) entry.getSize(); int count = (size % 1024 == 0) ? size / 1024 : (size / 1024)+1; int offset = 0; int nread, toRead; byte[] buffer = new byte[size]; for( int i = 0; i < count; i++ ) { offset = 1024*i; toRead = (size-offset > 1024) ? 1024 : size-offset; nread = zip.getInputStream(entry).read(buffer, offset, toRead); } ImageIcon icon = new ImageIcon(buffer); // boom -- why? } zip.close(); } catch( IOException ex ) { System.err.println(ex.getMessage()); } } } The sizes reported by entry.getSize() match the uncompressed size of the PNG files, and I am able to read the data out of the archive without any exceptions, but the creation of the ImageIcon blows up. The stacktrace: sun.awt.image.PNGImageDecoder$PNGException: crc corruption at sun.awt.image.PNGImageDecoder.getChunk(PNGImageDecoder.java:699) at sun.awt.image.PNGImageDecoder.getData(PNGImageDecoder.java:707) at sun.awt.image.PNGImageDecoder.produceImage(PNGImageDecoder.java:234) at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:246) at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172) at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136) sun.awt.image.PNGImageDecoder$PNGException: crc corruption at sun.awt.image.PNGImageDecoder.getChunk(PNGImageDecoder.java:699) at sun.awt.image.PNGImageDecoder.getData(PNGImageDecoder.java:707) at sun.awt.image.PNGImageDecoder.produceImage(PNGImageDecoder.java:234) at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:246) at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172) at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136) Can anyone shed some light on it? Google hasn't turned up any useful information.

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• C# Image HttpHandler: Disable cookies in handler (YSlow / Google PageSpeed)

  - by user319111

  Hi. I have a HttpHandler for resizing images, round corners, reflection etc etc. This i working OK. The problem i have is, that some data is stored in cookies, and the cookies are send to images, when they are shown. Is there any way to disable this globally (cookie-free requests) in web.config, or even in the HttpHandler itself? Example page: http://test.roob.dk/dk/product/ray-ban-rb3359-polarized-16/ Thanks in advance CP // Denmark

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• Subfolders in py2exe

  - by rajat

  I would like to add subfolders while creating the python script using py2exe.. The syntax I have used is -- setup(windows = [{"script":"test.py"}],data_files= [('Folder A', [('Subfolder B' ,[os.path.join('Folder A','XYZ.py')] )] )] ) What will be the correct syntax for creating a folder A, a subfolder B which includes file XYZ??

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• How to switch vertical and horizontal mouse scroll?

  - by tambourine

  I have website with horizontal layout and i what to make mouse wheel scroll it relative to axis x (not y, like usual). I use jQuery plugins mousewheel and scrollTo, but I can't achieve soft, natural scroll. You can look at the example on my test site

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• Microsoft Report Viewer Control not displaying report

  - by Kevin

  I have built a simple report and run it successfully in test winform apps but when I try to run the same report in my production winforms application, the report just doesn't show up in the viewer. I look at the ReportViewer control after InitializeComponent and everything looks fine. Are there debugging techniques or gotcha's that might be able to point me to why the report is not showing. It feels like there should be an error of some sort but it just displays a blank form.

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• progressive jpeg flash

  - by Nico

  hello, I read your topic about jpeg progressive and AS3, I didn't test anything.. But, did you find a good solution for this problem? with a rendering like jpeg progressive? thank you for your response Best regard

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