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• How to assert/unit-test servers JSON response?

  - by shazax

  My current project uses JSON as data interchange format. Both Front-end and Back-end team agree upon a JSON structure before start integrating a service. At times due to un-notified changes in JSON structure by back-end team; it breaks the front-end code. Is there any external library that we could use to compare a mock JSON (fixture) with servers JSON response. Basically it should assert the whole JSON object and should throw an error if there is any violation in servers JSON format. Additional info: App is built on JQuery consuming REST JSON services.

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• How to retrieve a bigint from a database and place it into an Int64 in SSIS

  - by b0fh

  I ran into this problem a couple years back and am hoping there has been a fix and I just don't know about it. I am using an 'Execute SQL Task' in the Control Flow of an SSIS package to retrieve a 'bigint' ID value. The task is supposed to place this in an Int64 SSIS variable but I getting the error: "The type of the value being assigned to variable "User::AuditID" differs from the current variable type. Variables may not change type during execution. Variable types are strict, except for variables of type Object." When I brought this to MS' attention a couple years back they stated that I had to 'work around' this by placing the bigint into an SSIS object variable and then converting the value to Int64 as needed. Does anyone know if this has been fixed or do I still have to 'work around' this mess? edit: Server Stats Product: Microsoft SQL Server Enterprise Edition Operating System: Microsoft Windows NT 5.2 (3790) Platform: NT INTEL X86 Version: 9.00.1399.06

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• ruby tests - error messages don't include line numbers or file name

  - by joshs

  Hi all, How do I get line numbers to be reported with my errors when testing. Here is what I get back on a typical error: josh@josh-laptop:~/d/test$ ruby unit/line_test.rb -n test_update Loaded suite unit/line_test Started E Finished in 0.066663 seconds. 1) Error: test_update(LineTest): NameError: undefined local variable or method `sdf' for #<LineTest:0xb6e61304> 1 tests, 0 assertions, 0 failures, 1 errors It is tough to debug without a line number and filename. From the code samples I've seen, people generally get back a more verbose error reports. How do I enable this? Thanks!

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• Blogger Template not saving after Facebook like changes

  - by David Shellabarger

  I've add the facebook Like button to http://www.goldfishview.com/ and that works great. Its powered by Blogger. Now I want to move it to the end of my posts instead of a the beginning. I move the facebook iframe and the preview looks great, but once I save the template it reverts back to were it was. I've tried in Chrome and Firefox. In Chrome after I click preview the save template button becomes useless and doesn't do anything when I click on it. In Firefox everything looks like it takes, but on page refresh the iFrame goes back to its original position. Am I crazy?

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• What if I put two kinds of encoded strings, say utf-8 and utf-16, in one file?

  - by jonny

  In Python, for example: f = open('test','w') f.write('this is a test\n'.encode('utf-16')) f.write('another test\n'.encode('utf-8')) f.close() That file gets messy when I re-open it: f = open("test") print f.readline().decode('utf-16') # it leads to UnicodeDecodeError print f.readline().decode('utf-8') # it works fine However if I keep the texts encoded in one style (say utf-16 only), it could read back ok. So I'm guessing mixing two types of encoding in the same file is wrong and couldn't be decoded back, even if I do know the encoding rules of each specific string? Any suggestion is welcome, thank you!

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• Two seperate tm structs mirroring each other

  - by BSchlinker

  Here is my current situation: I have two tm structs, both set to the current time I make a change to the hour in one of the structs The change is occurring in the other struct magically.... How do I prevent this from occurring? I need to be able to compare and know the number of seconds between two different times -- the current time and a time in the future. I've been using difftime and mktime to determine this. I recognize that I don't technically need two tm structs (the other struct could just be a time_t loaded with raw time) but I'm still interested in understanding why this occurs. void Tracker::monitor(char* buffer){ // time handling time_t systemtime, scheduletime, currenttime; struct tm * dispatchtime; struct tm * uiuctime; double remainingtime; // let's get two structs operating with current time dispatchtime = dispatchtime_tm(); uiuctime = uiuctime_tm(); // set the scheduled parameters dispatchtime->tm_hour = 5; dispatchtime->tm_min = 05; dispatchtime->tm_sec = 14; uiuctime->tm_hour = 0; // both of these will now print the same time! (0:05:14) // what's linking them?? // print the scheduled time printf ("Current Time : %2d:%02d:%02d\n", uiuctime->tm_hour, uiuctime->tm_min, uiuctime->tm_sec); printf ("Scheduled Time : %2d:%02d:%02d\n", dispatchtime->tm_hour, dispatchtime->tm_min, dispatchtime->tm_sec); } struct tm* Tracker::uiuctime_tm(){ time_t uiucTime; struct tm *ts_uiuc; // give currentTime the current time time(&uiucTime); // change the time zone to UIUC putenv("TZ=CST6CDT"); tzset(); // get the localtime for the tz selected ts_uiuc = localtime(&uiucTime); // set back the current timezone unsetenv("TZ"); tzset(); // set back our results return ts_uiuc; } struct tm* Tracker::dispatchtime_tm(){ time_t currentTime; struct tm *ts_dispatch; // give currentTime the current time time(&currentTime); // get the localtime for the tz selected ts_dispatch = localtime(&currentTime); // set back our results return ts_dispatch; }

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• Passing data from a View to a controller in ASP.Net MVC

  - by kingrichard2005

  Hello, I have a dictionary I'm passing to a View. I want to be able to pass the values of that dictionary back to a Controller action from this same View. Is there anyway this can be accomplished without using a form? The situation is that I need to be able to pass these back to a controller action that is called when a user clicks an ActionLink from the View, and in my experience an ActionLink cannot be used to submit a values of a form, i.e. I've only been able to submit values of a form using the form's submit button. Unless there's a way to use an ActionLink to submit values in a form.

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• [C#] How to consume web service adheres to the Event-based Asynchronous Pattern?

  - by codemonkie

  I am following the example from http://msdn.microsoft.com/en-us/library/8wy069k1.aspx to consume a web service implemented (by 3rd party) using the Event-based Asynchronous Pattern. However, my program needs to do multiple calls to the DoStuffAsync() hence will get back as many DoStuffCompleted. I chose the overload which takes an extra parameter - Object userState to distinguish them. My first question is: Is it valid to cast a GUID to Object as below, where GUID is used to generate unique taskID? Object userState = Guid.NewGuid(); Secondly, do I need to spawn off a new thread for each DoStuffAsync() call, since I am calling it multiple times? Also, would be nice to have some online examples or tutorials on this subject. (I've been googling for it the whole day and didn't get much back) Many thanks

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• NSTableView row change height on select

  - by Matt S.

  How can I change the height of a row when I select it then change it back when it's deselected?

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• Handling exceptions raised in observers

  - by sparky

  I have a Rails (2.3.5) application where there are many groups, and each Group has_many People. I have a Group edit form where users can create new people. When a new person is created, they are sent an email (the email address is user entered on the form). This is accomplished with an observer on the Person model. The problem comes when ActionMailer throws an exception - for example if the domain does not exist. Clearly that cannot be weeded out with a validation. There would seem to be 2 ways to deal with this: A begin...rescue...end block in the observer around the mailer. The problem with this is that the only way to pass any feedback to the user would be to set a global variable - as the observer is out of the MVC flow, I can't even set a flash[:error] there. A rescue_from in the Groups controller. This works fine, but has 2 problems. Firstly, there is no way to know which person threw the exception (all I can get is the 503 exception, no way to know which person caused the problem). This would be useful information to be able to pass back to the user - at the moment, there is no way for me to let them know which email address is the problem - at the moment, I just have to chuck the lot back at them, and issue an unhelpful message saying that one of them is not correct. Secondly (and to a certain extent this make the first point moot) it seems that it is necessary to call a render in the rescue_from, or it dies with a rather bizarre "can't convert Array into String" error from webbrick, with no stack trace & nothing in the log. Thus, I have to throw it back to the user when I come across the first error and have to stop processing the rest of the emails. Neither of the solutions are optimal. It would seem that the only way to get Rails to do what I want is option 1, and loathsome global variables. This would also rely on Rails being single threaded. Can anyone suggest a better solution to this problem?

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• jquery ajax vs browser url

  - by danwoods

  Hello all, I'm trying to use youtube's api to bring back a listing of a user's videos. The request url looks something like: http://gdata.youtube.com/feeds/api/users/username/uploads with 'username' being the correct username. This bring back the appropriate url in the browser. However when I try to access that url via jQuery's $.ajax or $.get functions, using something like: $.ajax({ //set parameters url: "http://gdata.youtube.com/feeds/api/users/username/uploads", type: "GET", //on success success: function (data) { alert("xml successfully captured\n\n" + data); }, //on error error:function (XMLHttpRequest, textStatus, errorThrown, data){ alert(" We're sorry, there seem to be a problem with our connection to youtube.\nYou can access all our videos here: http://www.youtube.com/user/username"); alert(data); } }); $.get("http://gdata.youtube.com/feeds/api/users/username/uploads", function(data){ alert("Data Loaded: " + data); }); I get an empty document returned. Any ideas why this is?

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• Why is autorelease especially dangerous/expensive for iPhone applications?

  - by e.James

  I'm looking for a primary source (or a really good explanation) to back up the claim that the use of autorelease is dangerous or overly expensive when writing software for the iPhone. Several developers make this claim, and I have even heard that Apple does not recommend it, but I have not been able to turn up any concrete sources to back it up. SO references: autorelease-iphone Why does this create a memory leak (iPhone)? Note: I can see, from a conceptual point of view, that autorelease is slightly more expensive than a simple call to release, but I don't think that small penalty is enough to make Apple recommend against it. What's the real story?

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• Help calling class from a class above.

  - by wtzolt

  Hello, How to call from class oneThread: back to class fun:? As in, address a class written below. Is it possible? class oneThread(threading.Thread): def __init__(self): threading.Thread.__init__(self) self.start() def run(self): print "1" time.sleep(1) print "2" time.sleep(1) print "3" self.wTree.get_widget("entryResult").set_text("Done with One.") # How to call from here back to class fun, which of course is below...? class fun: wTree = None def __init__( self ): self.wTree = gtk.glade.XML( "main.glade" ) self.wTree.signal_autoconnect( {"on_buttonOne" : self.one} ) gtk.main() def one(self, widget): oneThread(); gtk.gdk.threads_init() do=fun()

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• Particular Project Types & Job Responsibility in Financial Industry

  - by Rachel

  I want to gain knowledge about types of projects in Financial Industry and how it is like working for Back Office, Middle Office and Front Office of an Financial Firm. I have gone through How do I start programming in Financial Industry and it is really good but am question is mainly aim at: What typical types of Projects we have in Back Office, Middle Office, Front Office or in any other Financial Firms. I have heard about terms like Derivates Trading, Equity Trading, Banking, Money Market and so what are the types of projects in this areas and what would be a good read or resources to learn about different Financial Sectors and its related projects in each of this sectors. I would really appreciate if people who have worked in Financial Industry to share this knowledge.

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• Lock Question - When is an Update (U) lock issued?

  - by Randy Minder

  We are trying to resolve a deadlock problem. The transaction that is getting rolled back is attempting to issue an Update (U) lock on a resource that another transaction has an Exclusive (X) lock on. According to Books Online (http://msdn.microsoft.com/en-us/library/ms175519.aspx), an Update lock is supposed to prevent deadlocks, not cause them. So, my question is, why/when is an Update lock applied to a resource? We're a little confused about this because the resource that is attempting to have the Update lock applied to will not be updated by the process that is having the transaction rolled back. Thanks for your help on this. Randy

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• The new Google Analytics - what new useful features have you found?

  - by Rob

  If you don't know already a new version of Google Analytics has just come out. On first initial views it doesn't seem like much of an improvement on the previous version. There's lot's linking to Google's social stats but I'm yet to see the value of that. Also it doesn't seem to make the best use of the important data, it's tending to push referral sites, keywords to the back and bring the less important data to the front. Is that a sign of things to come??? One feature I did find interesting was the visitors flow as it shows the visitors path through your site. What new features have you found useful/interesting?

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• The best way to separate admin functionality from a public site?

  - by AndrewO

  I'm working on a site that's grown both in terms of user-base and functionality to the point where it's becoming evident that some of the admin tasks should be separate from the public website. I was wondering what the best way to do this would be. For example, the site has a large social component to it, and a public sales interface. But at the same time, there's back office tasks, bulk upload processing, dashboards (with long running queries), and customer relations tools in the admin section that I would like to not be effected by spikes in public traffic (or effect the public-facing response time). The site is running on a fairly standard Rails/MySQL/Linux stack, but I think this is more of an architecture problem than an implementation one: mainly, how does one keep the data and business logic in sync between these different applications? Some strategies that I'm evaluating: 1) Create a slave database of the public facing database on another machine. Extract out all of the model and library code so that it can be shared between the applications. Create new controllers and views for the admin interfaces. I have limited experience with replication and am not even sure that it's supposed to be used this way (most of the time I've seen it, it's been for scaling out the read capabilities of the same application, rather than having multiple different ones). I'm also worried about the potential for latency issues if the slave is not on the same network. 2) Create new more task/department-specific applications and use a message oriented middleware to integrate them. I read Enterprise Integration Patterns awhile back and they seemed to advocate this for distributed systems. (Alternatively, in some cases the basic Rails-style RESTful API functionality might suffice.) But, I have nightmares about data synchronization issues and the massive re-architecting that this would entail. 3) Some mixture of the two. For example, the only public information necessary for some of the back office tasks is a read-only completion time or status. Would it make sense to have that on a completely separate system and send the data to public? Meanwhile, the user/group admin functionality would be run on a separate system sharing the database? The downside is, this seems to keep many of the concerns I have with the first two, especially the re-architecting. I'm sure the answers are going to be highly dependent on a site's specific needs, but I'd love to hear success (or failure) stories.

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• Is it better to comment out unneeded code or delete it?

  - by Matt Connolly

  For web applications under maintenance, assuming you have source control, when you need to remove part of the UI and the associated code, do you delete the code and check in, or do you comment out the old code? Arguments in favor of deleting: cleaner code, can still see deleted code in source control history, no worrying about refactoring code that might be uncommented some day. Arguments in favor of commenting: sometimes you need to add the feature back in and the developer adding it back in may not know to check source control history, sometimes the code represents unique functionality that can be a handy reference, seeing it all in one place can help provide clues to deciphering the active code.

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• innodb lock wait timeout

  - by shantanuo

  As per the documentation link given below: When a lock wait timeout occurs, the current statement is not executed. The current transaction is not rolled back. (Until MySQL 5.0.13 InnoDB rolled back the entire transaction if a lock wait timeout happened. You can restore this behavior by starting the server with the --innodb_rollback_on_timeout option, available as of MySQL 5.0.32. http://dev.mysql.com/doc/refman/5.0/en/innodb-parameters.html#sysvar_innodb_lock_wait_timeout Does it mean that when a lock wait timeout occurs, it compromises the transactional integrity? "roollback on timeout" was the default behaviour till 5.0.13 and I guess that was the correct way to handle such situations. Does anyone think that this should be the default behaviour and the user should not be asked to add a parameter for a functionality that is taken for granted?

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• Dealing with multiple animation state in one sprite sheet image using html5 canvas

  - by Sora

  I am recently creating a Game using html5 canvas .The player have multiple state it can walk jump kick and push and multiple other states my question is simple but after some deep research i couldn't find the best way to deal with those multiple states this is my jsfiddle : http://jsfiddle.net/Z7a5h/5/ i managed to do one animation but i started my code in a messy way ,can anyone show me a way to deal with multiple state animation for one sprite image or just give a useful link to follow and understand the concept of it please .I appreciate your help if (!this.IsWaiting) { this.IsWaiting = true; this.lastRenderTime = now; this.Pos = 1 + (this.Pos + 1) % 3; } else { if (now - this.lastRenderTime >= this.RenderRate) this.IsWaiting = false; }

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• What are good ways to find collaborators for a coding weekend?

  - by tarrasch

  Not sure if this belongs here, feel free to push it somewhere else if needed. When i was at university we would sometimes come together into a room full of beer and fast food and crank out software in a weekend. Unfortunately the group has kind of split up and its just not possible any more. My question is now: Where can i find like-minded people on the Internet that would like to do something like this? I have an idea what i wanted to do next, but of course other people have ideas too.

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• Basic Android Layout Question

  - by jonhobbs

  Hi, I'm new to android but I've been working my way through the tutoials. Still trying to get my head round layouts in a non-html world and was wondering how to achieve the following.... 1) I'd like to set a tiled background to fill the screen behind the whole activity 2) I'd like to place a graphic and a button underneath it centred in the middle of the screen. 3) When the user clicks the button I'd like to start a new activity and presumably I have to do something to the current activity so the user can use the back button to get back to it. Sorry for the newbie question. Jon

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• Making form submissions unique using PHP and HTML

  - by canadiancreed

  Hello all I'm currently developing a page where the user fills out a form, and when submitted they are taken to the next page. When on the next page, I want to have it so that if the user went back to the previous page using the back button, or hit refresh, the submission will not be saved into the DB. Now I recall reading somewhere that if you had a way to make each submission unique, this issue is averted, but after screwing around for hours on end, for the life of me I cannot recall how this could be done (using PHP), so long story short has anyone ran into this, and if so, what was your solution?

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• Speaking at SW FL Code Camp Sept 8th 2012

  - by Nikita Polyakov

  It’s always a great time when it’s a Code Camp! I will be presenting “Windows [Phone] Live Tiles & Push Notifications“ at this year’s South West Florida Code Camp 2012 on September 8th.  As with many Code Camps – it’s going to be a trick to pick which session to go to at each time slot, and that’s how you know it’s a good one – so much content – so many great speakers! Hope to see you there! Details & Registration: http://codecamp.swfldev.net Code Camp 2012 will take place at: Hodges University 2649 Professional Circle Naples, Florida 34119 Don’t forget about these two great events coming up as well: http://www.TampaCodeCamp.com and http://itprocamp.com/tampa/

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• Android - Video Restart or Resume

  - by Chris

  Hi everyone, I am writing a simple android application with a class that extends activity, that plays a video from a url on the web. There is a button on top that on click takes the user to a web page. What I want to do is when the user is browsing the web page, if he hits the back button, I want him to come back to the main activity and restart the video. Is there a way to do this? Also, is there a way the video can be resumed from where it left off? Thank you. Chris

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