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• Paypal subscription API - transaction variables not POSTed

  - by morpheous

  I am writing a payments system based around paypal, I am using the HTML 'API'. I am passing the following form fields to PayPal: 'rm' = 2 'return = http://www.example.com/payment-handler.php?token=sometoken Where 'token' is a token I generated. According to the paypal documentation, a return method (rm) of 2 indicates to Paypal that the transaction data be posted back to the callback url using the POST method. When processing items using 'buy_now' buttons, the transaction items are correctly POSTed to my callback url (payment-handler.php), but for 'subscribe' operations, although the callback url is called, no POST data is sent to the url, and also, the 'token' field is missing. Instead, there is a parameter called 'auth'. I cant see anything in the paypal docs about a 'auth' field - so I dont know whats generating it and if I can reliably using it. Can anyone shed some light on this?

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• converting Date object to TimeWithZone

  - by avaynshtok

  I need to convert a Date object into a TimeWithZone object representing the beginning of that day in a given time zone. The following approach works, but seems too convoluted as it requires me to convert the date to a string: ?> date = Date.parse("2010-02-17") => Wed, 17 Feb 2010 >> ActiveSupport::TimeZone['Eastern Time (US & Canada)'].parse(date.to_s) => Wed, 17 Feb 2010 00:00:00 EST -05:00 >> ActiveSupport::TimeZone['UTC'].parse(date.to_s) => Wed, 17 Feb 2010 00:00:00 UTC 00:00 Is there a better way I'm missing?

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• Unit tests only run automatically when active SDK is "simulator"?

  - by Steve Madsen

  I have followed the instructions Apple publishes for unit testing applications on iPhone and things work great when I set the active SDK to "iPhone Simulator". I have it configured to always build and run my tests as part of building the application itself. Apple implies (by omission) that this should work all of the time, but the tests are skipped when I set the active SDK to "iPhone Device". I am also linking with OCMock, and instead of a failing test, this warning is in the build log: ld: warning: in .../build/Debug-iphoneos/OCMock.framework/OCMock, missing required architecture arm in file It's very nice to make the unit test bundle a dependency of the main application, so these tests run at every build, but its utility is greatly diminished if it doesn't work during device builds. Is this a known, but undocumented, limitation?

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• Web scraping with Python

  - by Jack

  I'm currently trying to scrape a website that has fairly poorly-formatted HTML (often missing closing tags, no use of classes or ids so it's incredibly difficult to go straight to the element you want, etc.). I've been using BeautifulSoup with some success so far but every once and a while (though quite rarely), I run into a page where BeautifulSoup creates the HTML tree a bit differently from (for example) Firefox or Webkit. While this is understandable as the formatting of the HTML leaves this ambiguous, if I were able to get the same parse tree as Firefox or Webkit produces I would be able to parse things much more easily. The problems are usually something like the site opens a <b> tag twice and when BeautifulSoup sees the second <b> tag, it immediately closes the first while Firefox and Webkit nest the <b> tags. Is there a web scraping library for Python (or even any other language (I'm getting desperate)) that can reproduce the parse tree generated by Firefox or WebKit (or at least get closer than BeautifulSoup in cases of ambiguity).

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• Twisted Python getPage

  - by David Dixon II

  I tried to get support on this but I am TOTALLY confused. Here's my code: from twisted.internet import reactor from twisted.web.client import getPage from twisted.web.error import Error from twisted.internet.defer import DeferredList from sys import argv class GrabPage: def __init__(self, page): self.page = page def start(self, *args): if args == (): # We apparently don't need authentication for this d1 = getPage(self.page) else: if len(args) == 2: # We have our login information d1 = getPage(self.page, headers={"Authorization": " ".join(args)}) else: raise Exception('Missing parameters') d1.addCallback(self.pageCallback) dl = DeferredList([d1]) d1.addErrback(self.errorHandler) dl.addCallback(self.listCallback) def errorHandler(self,result): # Bad thingy! pass def pageCallback(self, result): return result def listCallback(self, result): print result a = GrabPage('http://www.google.com') data = a.start() # Not the HTML I wish to get the HTML out which is given to pageCallback when start() is called. This has been a pita for me. Ty! And sorry for my sucky coding.

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• Using Spring's KeyHolder with programmatically-generated primary keys

  - by smayers81

  Hello, I am using Spring's NamedParameterJdbcTemplate to perform an insert into a table. The table uses a NEXTVAL on a sequence to obtain the primary key. I then want this generated ID to be passed back to me. I am using Spring's KeyHolder implementation like this: KeyHolder key = new GeneratedKeyHolder(); jdbcTemplate.update(Constants.INSERT_ORDER_STATEMENT, params, key); However, when I run this statement, I am getting: org.springframework.dao.DataRetrievalFailureException: The generated key is not of a supported numeric type. Unable to cast [oracle.sql.ROWID] to [java.lang.Number] at org.springframework.jdbc.support.GeneratedKeyHolder.getKey(GeneratedKeyHolder.java:73) Any ideas what I am missing?

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• Why isn't this MVC Html Helper extension method working?

  - by Blankman

  My base controller looks like: public abstract MyBaseMasterController<TMasterViewModel> : Controller { } public MyMasterController: MyBaseMasterController<SomeThingModel> { } Extension method: public static string DoSomething(this HtmlHelper htmlHelper) { StringBuilder sb = new StringBuilder(); sb.Append("var cnwglobals = {"); var controller = htmlHelper.ViewContext.Controller as MyMasterController; if (controller == null) { } return sb.ToString(); } In my view I do: <% Html.Dosomething(); %> I get an error: CS1061: 'System.Web.Mvc.HtmlHelper<Blah.Models.ViewModelForMasterWrapper<Blah.Models.MasterViewModel>>' does not contain a definition for 'DoSomething' and no extension method 'DoSomething' accepting a first argument of type 'System.Web.Mvc.HtmlHelper<Blah.Models.ViewModelForMasterWrapper<Blah.Models.MasterViewModel>>' could be found (are you missing a using directive or an assembly reference?)

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• Using java classes in Grails

  - by RN

  I have a Java\Spring\Hibernate application - complete with domain classes which are basically Hibernate POJOs There is a piece of functionality that I think can be written well in Grails. I wish to reuse the domain classes that I have created in the main Java app What is the best way to do so ? Should I write new domain classes extending the Java classes ? this sounds tacky Or Can I 'generate' controllers off the Java domain classes ? What are the best practices around reusing Java domain objects in Grails\Groovy I am sure there must be others writing some pieces in grails\groovy If you know about a tutorial which talks about such an integration- that would be awesome !!! PS: I am quite a newbie in grails-groovy so may be missing the obvious. Thanks !!!

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• Updates to NSDictionary attribute in CoreData not saving

  - by sfkaos

  I have created an Entity in CoreData that includes a Transformable attribute type implemented as an NSDictionary. The NSDictionary attribute only contains values of a custom class. The properties of the custom class are all of type NSString. The custom class complies with NSCoding implementing: -(void)encodeWithCoder:(NSCoder*)coder; -(id)initWithCoder:(NSCoder *)coder When saving the Entity for the first time all attributes including the Transformable (NSDictionary) type are properly saved in the DB. When the same Entity is fetched from the DB and updated (including the Transformable attribute) it seems to be updated properly. However, when the app is closed and then reopened fetching the Entity does not show the updated Transformable attribute-type though the rest of the attributes of type NSDate and NSString are up-to-date. The Transformable attribute is the original saved value not the updated value. Is this a problem with KVO or am I missing something else when trying to save an NSDictionary filled with a custom class to CoreData?

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• Web scraping with Python

  - by Jack

  I'm currently trying to scrape a website that has fairly poorly-formatted HTML (often missing closing tags, no use of classes or ids so it's incredibly difficult to go straight to the element you want, etc.). I've been using BeautifulSoup with some success so far but every once and a while (though quite rarely), I run into a page where BeautifulSoup creates the HTML tree a bit differently from (for example) Firefox or Webkit. While this is understandable as the formatting of the HTML leaves this ambiguous, if I were able to get the same parse tree as Firefox or Webkit produces I would be able to parse things much more easily. The problems are usually something like the site opens a <b> tag twice and when BeautifulSoup sees the second <b> tag, it immediately closes the first while Firefox and Webkit nest the <b> tags. Is there a web scraping library for Python (or even any other language (I'm getting desperate)) that can reproduce the parse tree generated by Firefox or WebKit (or at least get closer than BeautifulSoup in cases of ambiguity).

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• .net Value Class sorting with IComparable

  - by greggorob64

  I'm running into an issue using a DataGridView bound to a iBindingListView implementation (third party dll) attached to a large collection. There's a certain property in my collection type, named MyDateTime, which is a value class similar to DateTime, but also with some legacy code. This VALUE CLASS implements iComparable, iComparable<T>, and iEquatable<T>. The issue I'm having is this: When I apply a sort to the iBindingListView, or the Automatic Sorting provided by the DGV on the MyDateTimeColumn, it ALWAYS uses the non-generic iComparer, causing hundreds of thousands of unnecessary boxing and unboxing. When I remove the non-generic iComparer, the generic one is still not used, it just does a string compare on the .ToString(). Am I missing something? Why is my generic comparer not bieng called on a sort?

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• Question about spring manning-in-action

  - by Gandalf StormCrow

  I saw people asking about best book for learning spring, and I came across manning.spring in action was recommended most of the time so I decided to give it a go. The thing is the author offers some pretty reasonable explanations, puzzle by puzzle it gets in your head, than you just need to code it and you're done, you get it(this is how I work don't know about the others). When it comes to the code its very disapointing, I went trought the Knight example like 2 or 3 times by now and I see its incorrect in the book, I mean its hard already for people eager to learn and why not a note somewhere in the book like pseudo-code or something. The knight example in the first chapter is missing two classes QuestFailedException and HolyGrail I mean other people must have noticed this, why is everyone recommending this book without saying at least it has some errors(like many others do), was anyone actually been able to compile and this first chapter example?

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• System.DirectoryServices.AccountManagement not working on the server

  - by mlsteeves

  I am using System.DirectoryServices.AccountManagement to find the logged-in user's AD entry. It is working great in the VS2008 WebDev server on developers machines. But when we installed the code on the development server (windows server 2008), we get an access error. Both the developer's machine and the development server are members of the same domain. We have Impersonation turned on, so we are connecting to AD with the same user credentials. What are we missing here? Why is it working on the developer's machine, but not the development server? The actual exception that we were receiving was "An operations error occurred".

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• help running SWF To Image on 64bit windows

  - by Randolph Dudley

  I had been using SWFToImage for a specifc client, but have recently migrated to 64bit Windows Server 2008 As this dll was compiled for 32bit managed code, it will not run in my new 64bit environment. I've tried to follow the instructions the developer has presented here with no luck: How to run and use SWF To Image on x64 Windows Alas, I'm a simple web developer and just don't have my head around Windows application development. I may just be misunderstanding or missing some fundamental step in the process. Has anyone been able to get this dll to work on a 64bit server environment? Any information or guidance would be greatly appreciated! Many thanks in advance!

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• Rough/near equivalents of Java and .NET technologies/frameworks

  - by Paul Sasik

  I work in a shop that is a mix of mostly Java and .NET technologists. When discussing new solutions and architectures we often encounter impedance in trying to compare the various technologies, frameworks, APIs etc. in use between the two camps. It seems that each camp knows little about the other and we end up comparing apples to oranges and forgetting about the bushels. While researching the topic I found this: Java -- .Net rough equivalents It's a nice list but it's not quite exhaustive and is missing the key .NET 3.0 technologies and a few other tidbits. To complete that list: what are the near/rough equivalents (or a combination of technologies) in Java to the following in .NET? WCF WPF Silverlight WF Generics Lambda expressions Linq (not Linq-to-SQL) ...have i missed anything else? Note that I omitted technologies that are already covered in the linked article. I would also like to hear feedback on whether the linked article is accurate. Thanks. (Will CW if requested.)

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• Login to SQL Server Express via development environment (VS2010)

  - by Sanarothe

  Seems like I'm missing something simple, but my attempts to connect to SQL Server Express have failed. I feel like I need to add privileges for my account but I'm not sure where to do it. Dev Env: VS 2010 (Web) SQL: Sql Server Express 2008 OS: XP Trying to open a connection to database returns: Cannot open database "|DataDirectory|DropData.mdf" requested by the login. The login failed. Login failed for user 'devel.' I created the database using the interface in VS 2010 (Add new item - DB File) but my ASP.Net class only covered design-time access and not access in code, so I'm not familiar with what to do. I created a user (Devel) using SQL Server Management Studio to avoid connecting as SA, but couldn't figure out how to give any SQL-level access rights to this account. Any ideas? Thanks, Cameron

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• Linq to SQL query error

  - by Tom Kong

  public class Service1 : IService1 { [OperationContract] public List<decmal> GetEnterCounts(DateTime StartTime, DateTime EndTime) { var db = new FACT_ENTER_EXIT(); return (from e in **db.ENTER_CNT** where StartTime < db.DATE_ID && db.DATE_ID > EndTime select e).ToList(); } } Ok, so I have this database FACT_ENTER_EXIT containing the field ENTER_CNT (nullable = false, type = decimal) which I want to return as a list VS2010 spits out the following error at 'db.ENTER_CNT': Error 1 Could not find an implementation of the query pattern for source type 'decimal'. 'Where' not found. I must be missing something, could someone please point out where I'm going wrong?? Thanks in advance, Tom

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• fetching a url using $.getJSON and parsing it correctly

  - by sofia

  This is probably really stupid but i can't find the problem with my code. It fetches a url that returns json and the function is then supposed to return a string: function getit() { var ws_url = 'example.com/test.js'; var user = false; $.getJSON(ws_url, function(data) { alert('user '+data.user);//shows john user = data.user || false; } ); return user;//should return john but returns false } test.js will have something like this: {"id":"12","username":"ses","user":"john","error":""} or like this: {"error":"123"} I also tried if(data.user){}else{} but it didn't work either.. So what am i missing? Thanks :)

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• Does .NET Regex support global matching?

  - by Dave

  I haven't been able to find anything online regarding this. There's RegexOptions, but it doesn't have Global as one of its options. The inline modifiers list also doesn't mention global matching. In a nutshell, I've got a regex to parse something like --arga= "arg1" --argb ="arg2" into separate argument name/value pairs using this regex: --(\\w+)\\s*=\\s*\"(\\w+)\"\\s* but the .NET Regex class doesn't do it globally (iteratively). So in order for me to get this to work, I'd have to do a match, then remove this from the argument string, and loop over and over again until I've exhausted all of the arguments. It would be nicer to run the regex once, and then loop over the match groups to get the name value pairs. Is this possible? What am I missing?

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• Differences between Perl and PHP

  - by lok

  I'm planning to lern Perl 5 and as I have only used PHP until now, I wanted to know a bit about how the languages differ from each other. As PHP started out as a set of "Perl hacks" it has obviously cloned some of Perls features. What are the main differences in the syntax? Is it true that with Perl you have more options and ways to express something? Why is Perl not used for dynamic websites very often anymore? What made PHP gain more popularity than it?

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• Convert a string of numbers to a NSTimeInterval

  - by culov

  I know I must be over-complicating this because it NSTimeInterval is just a double, but I just can't seem to get this done properly since I have had very little exposure to objective c. the scenario is as follows: The data im pulling into the app contains two values, startTime and endTime, which are the epoch times in milliseconds. The variables that I want to hold these values are NSTimeInterval *start; NSTimeInterval *end; I decided to store them as NSTimeIntervals but im thinking that maybe i ought to store them as doubles because theres no need for NSTimeIntervals since comparisons can just be done with a primitive. Either way, I'd like to know what I'm missing in the following step, where I try to convert from string to NSTimeInterval: tempString = [truckArray objectAtIndex:2]; tempDouble = [tempString doubleValue]; Now it's safely stored as a double, but I can't get the value into an NSTimeInterval. How should this be accomplished? Thanks

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• Why are events and commands in MVVM so unsupported by WPF / Visual Studio?

  - by Edward Tanguay

  When creating an WPF application with the MVVM pattern, it seems I have to gather the necessary tools myself to even begin the most rudimentary event handling, e.g. AttachedBehaviors I get from here DelegateCommands I get from here Now I'm looking for some way to handle the ItemSelected event in a ComboBox and am getting suggestions of tricks and workarounds to do this (using a XAML trigger or have other elements bound to the selected item, etc.). Ok, I can go down this road, but it seems to be reinventing the wheel. It would be nice to just have an ItemSelected command that I can handle in my ViewModel. Am I missing some set of standard tools or is everyone doing MVVM with WPF basically building and putting together their own collection of tools just so they can do the simplest plumbing tasks with events and commands, things that take only a couple lines in code-behind with a Click="eventHandler"?

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• Pros and cons of programmatically enforcing foreign key than in database

  - by Jeffrey

  It is causing so much trouble in terms of development just by letting database enforcing foreign key. Especially during unit test I can’t drop table due to foreign key constrains, I need to create table in such an order that foreign key constrain warning won’t get triggered. In reality I don’t see too much point of letting database enforcing the foreign key constrains. If the application has been properly designed there should not be any manual database manipulation other than select queries. I just want to make sure that I am not digging myself into a hole by not having foreign key constrains in database and leaving it solely to the application’s responsibility. Am I missing anything? P.S. my real unit tests (not those that use mocking) will drop existing tables if the structure of underlying domain object has been modified.

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• qt/wxwidgets third party components?

  - by tkd

  I'm used to working in a Delphi and C# environment which seem to have a rich set of third party components available. I'm currently wanting to do cross-platform programming in C++ using either qt or wxwidgets. Is there a large market for third party components? I was looking at sourceforge and that doesn't seem to show much that is useful (how the hell do you find out what components or features are in a project without downloading the source?). I'm thinking carousel/coverflow components, rich datagrids (like the sort DevExpress provide). Or is this, write your own territory?

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• DROP TABLE fails for temp table

  - by StarBright

  I have a client application that creates a temp table, the performs a bulk insert into the temp table, then executes some SQL using the table before deleting it. Pseudo-code: open connection begin transaction CREATE TABLE #Temp ([Id] AS int) bulk insert 500 rows into #Temp UPDATE [OtherTable] SET [Status]=0 WHERE [Id] IN (SELECT [Id] FROM #Temp) AND [Group]=1 DELETE FROM #Temp WHERE [Id] IN (SELECT [Id] FROM [OtherTable] WHERE [Group]=1) INSERT INTO [OtherTable] ([Group], [Id]) SELECT 1 as [Group], [DocIden] FROM #Temp DROP TABLE #Temp COMMIT TRANSACTION CLOSE CONNECTION This is failing with an error on the DROP statement: Cannot drop the table '#Temp', because it does not exist or you do not have permission. I can't imagine how this failure could occur without something else going on first, but I don't see any other failures occurring before this. Is there anything that I'm missing that could be causing this to happen?

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