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• Naming convetion of regex,lookahead and lookbehind

  - by user198729

  Why is it counter intuitive? /(?<!\d)\d{8}(?!\d)/,here (?<!\d) comes first,but called lookbehind,(?!\d) next,but called lookahead.All are counter intuitive. What's the reason to name it this way?

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• should I ever put a major version number into a C#/Java namespace?

  - by Andrew Patterson

  I am designing a set of 'service' layer objects (data objects and interface definitions) for a WCF web service (that will be consumed by third party clients i.e. not in-house, so outside my direct control). I know that I am not going to get the interface definition exactly right - and am wanting to prepare for the time when I know that I will have to introduce a breaking set of new data objects. However, the reality of the world I am in is that I will also need to run my first version simultaneously for quite a while. The first version of my service will have URL of http://host/app/v1service.svc and when the times comes by new version will live at http://host/app/v2service.svc However, when it comes to the data objects and interfaces, I am toying with putting the 'major' version of the interface number into the actual namespace of the classes. namespace Company.Product.V1 { [DataContract(Namespace = "company-product-v1")] public class Widget { [DataMember] string widgetName; } public interface IFunction { Widget GetWidgetData(int code); } } When the time comes for a fundamental change to the service, I will introduce some classes like namespace Company.Product.V2 { [DataContract(Namespace = "company-product-v2")] public class Widget { [DataMember] int widgetCode; [DataMember] int widgetExpiry; } public interface IFunction { Widget GetWidgetData(int code); } } The advantages as I see it are that I will be able to have a single set of code serving both interface versions, sharing functionality where possible. This is because I will be able to reference both interface versions as a distinct set of C# objects. Similarly, clients may use both interface versions simultaneously, perhaps using V1.Widget in some legacy code whilst new bits move on to V2.Widget. Can anyone tell why this is a stupid idea? I have a nagging feeling that this is a bit smelly.. notes: I am obviously not proposing every single new version of the service would be in a new namespace. Presumably I will do as many non-breaking interface changes as possible, but I know that I will hit a point where all the data modelling will probably need a significant rewrite. I understand assembly versioning etc but I think this question is tangential to that type of versioning. But I could be wrong.

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• Generating tuples for tuples

  - by Nicola Bonelli

  Say you have a tuple and want to generate a new tuple by applying a metafunction on each type of the first one. What' the most efficient C++ metafuntion to accomplish to this task? Is it also possible to use C++0x variadic template to provide a better implementation?

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• OpenID with Kohana , how to?

  - by grokker

  Hi, I've used CakePHP and now I'm trying to build a project using Kohana 3. It's also my first time to use OpenID as a means for user registration/authentication for my site. That's why I'm wondering, how do I use OpenId with Kohana 3?

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• Are colons allowed URIs?

  - by Emanuil

  I thought using colons in URIs was "illegal". Then I saw that vimeo.com is using URIs like http://www.vimeo.com/tag:sample. What do you feel about the usage of colons in URIs? How do I make my Apache server work with the "colon" syntax because now it's throwing the "Access forbidden!" error when there is a colon in the first segment of the URI?

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• Changing the generated code for "Add View"

  - by Anthony Potts

  I would like for the "List" view content views to have a check added to it to first check that the model has elements, it occurs to me that I have no idea how these views are generated. Can those be changed?

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• jquery finish one animation then start the other one

  - by Emin

  I have one two divs and two seperate links that triggers slideDown and slideUp for the divs. When one of the divs are slided down and I click the other one, I hide the first div (slidingUp) and then open the other div (slidingDown) but, at the moment its like while one div is sliding down, the other, also in the same time, is sliding up. is there a way that would tell jquery to wait to finish sliding down of one div and only then start sliding up the other ?

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• Ant replace properties

  - by Andrew

  Hi. I've replaced properties file for Spring ApplicationContext using Ant, properties replaced correctly, and immidiately after Ant taskCalled, only after that first ApplicationContext call will be, but application context gets old property values

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• WPF MVVM: Convention over Configuration for ResourceDictionary ?

  - by Jeffrey Knight

  Update In the wiki spirit of StackOverflow, here's an update: I spiked Joe White's IValueConverter suggestion below. It works like a charm. I've written a "quickstart" example of this that automates the mapping of ViewModels-Views using some cheap string replacement. If no View is found to represent the ViewModel, it defaults to an "Under Construction" page. I'm dubbing this approach "WPF MVVM White" since it was Joe White's idea. Here are a couple screenshots. The first image is a case of "[SomeControlName]ViewModel" has a corresponding "[SomeControlName]View", based on pure naming convention. The second is a case where the ModelView doesn't have any views to represent it. No more ResourceDictionaries with long ViewModel to View mappings. It's pure naming convention now. I'm hosting a download of the project here: http://rootsilver.com/files/Mvvm.White.Quickstart.zip I'll follow up with a longer blog post walk through. Original Post I read Josh Smith's fantastic MSDN article on WPF MVVM over the weekend. It's destined to be a cult classic. It took me a while to wrap my head around the magic of asking WPF to render the ViewModel. It's like saying "Here's a class, WPF. Go figure out which UI to use to present it." For those who missed this magic, WPF can do this by looking up the View for ModelView in the ResourceDictionary mapping and pulling out the corresponding View. (Scroll down to Figure 10 Supplying a View ). The first thing that jumps out at me immediately is that there's already a strong naming convention of: classNameView ("View" suffix) classNameViewModel ("ViewModel" suffix) My question is: Since the ResourceDictionary can be manipulated programatically, I"m wondering if anyone has managed to Regex.Replace the whole thing away, so the lookup is automatic, and any new View/ViewModels get resolved by virtue of their naming convention? [Edit] What I'm imagining is a hook/interception into ResourceDictionary. ... Also considering a method at startup that uses interop to pull out *View$ and *ViewModel$ class names to build the DataTemplate dictionary in code: //build list foreach .... String.Format("<DataTemplate DataType=\"{x:Type vm:{0} }\"><v:{1} /></DataTemplate>", ...)

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• Completely uninstalling both versions of XCode

  - by Mugunth Kumar

  As usual I typed sudo Library/uninstall-devtools --mode=all It uninstalled the first version (Beta) properly. Tried the same thing on the older Stable Version which I have installed to "XCode Stable" Getting this error Use of uninitialized value $dir_name in substitution (s///) at Library/uninstall-devtools line 153. Use of uninitialized value $developer_dir in concatenation (.) or string at Library/uninstall-devtools line 120 Anyone else facing this problem? Can I just trash the installation folder?

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• Oracle Coding Standards Feature Implementation

  - by Mike Hofer

  Okay, I have reached a sort of an impasse. In my open source project, a .NET-based Oracle database browser, I've implemented a bunch of refactoring tools. So far, so good. The one feature I was really hoping to implement was a big "Global Reformat" that would make the code (scripts, functions, procedures, packages, views, etc.) standards compliant. (I've always been saddened by the lack of decent SQL refactoring tools, and wanted to do something about it.) Unfortunatey, I am discovering, much to my chagrin, that there doesn't seem to be any one widely-used or even "generally accepted" standard for PL-SQL. That kind of puts a crimp on my implementation plans. My search has been fairly exhaustive. I've found lots of conflicting documents, threads and articles and the opinions are fairly diverse. (Comma placement, of all things, seems to generate quite a bit of debate.) So I'm faced with a couple of options: Add a feature that lets the user customize the standard and then reformat the code according to that standard. —OR— Add a feature that lets the user customize the standard and simply generate a violations list like StyleCop does, leaving the SQL untouched. In my mind, the first option saves the end-users a lot of work, but runs the risk of modifying SQL in potentially unwanted ways. The second option runs the risk of generating lots of warnings and doing no work whatsoever. (It'd just be generally annoying.) In either scenario, I still have no standard to go by. What I'd need to know from you guys is kind of poll-ish, but kind of not. If you were going to use a tool of this nature, what parts of your SQL code would you want it to warn you about or fix? Again, I'm just at a loss due to a lack of a cohesive standard. And given that there isn't anything out there that's officially published by Oracle, I think this is something the community could weigh in on. Also, given the way that voting works on SO, the votes would help to establish the popularity of a given "refactoring." P.S. The engine parses SQL into an expression tree so it can robustly analyze the SQL and reformat it. There should be quite a bit that we can do to correct the format of the SQL. But I am thinking that for the first release of the thing, layout is the primary concern. Though it is worth noting that the thing already has refactorings for converting keywords to upper case, and identifiers to lower case.

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• Google app engine for static files in joomla

  - by vipinsahu

  hi i want to use google app engine for the static data for my joomla website currently my site is http://webkul.com i want to put all the css and js files in the app engine please help i am using google app engine first time if there is any good tutorial please put it here thanks

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• StringBuilder vs XmlTextWriter

  - by Wololo

  I am trying to squeeze as much performance as i can from a custom HttpHandler that serves Xml content. I' m wondering which is better for performance. Using the XmlTextWriter class or ad-hoc StringBuilder operations like: StringBuilder sb = new StringBuilder("<?xml version="1.0" encoding="UTF-8" ?>"); sb.AppendFormat("<element>{0}</element>", SOMEVALUE); Does anyone have first hand experience?

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• Problem with a "Select Case"

  - by Nimrod

  i wrote the following section below. when debugging, i see that i enter the first Case okay. my problem is with the second Case - it does not enter it and goes to the error messege. what do i do wrong? Select Case Data_Rate Case "1", "2", "5.5", "11", "6", "9", "12", "18", "24", "36", "48", "54" a = Data_Rate Select Case Date_Rate Case "1" b = 2 Case "2", "5.5", "11" b = 1 Case Else: MsgBox ("ERROR - Data_Rate") End Select Case "0", "1", "2", "3", "4", "5", "6", "7" a = 3 Case Else: MsgBox ("ERROR - Data_Rate") End Select

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• iPhone - Have the keyboard slide into view from the right like when editing a note in Contacts

  - by Toon Van Acker

  Hello, I'm looking for a way to slide the keyboard into view from the right, like what happens in the Contacts application when you edit a note. My problem is that when I call [someTextView becomeFirstResponder] in viewWillAppear, the keyboard immediatly pops up with no animation. And when I call it in viewDidAppear, the view first slides in from the right (UINavigationController does the sliding), and then the keyboard slides in from the bottom. Is it possible to have the keyboard slide in from the right, together with the view?

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• Is it possible to add an HTML link in the body of a MAILTO link

  - by StubbornMule

  I have not had to mess with mailto links much. However I now need to add a link in the body of a mailto if it is possible. Is there a way to add a link or to change the email opened to an html email vs a text email? Something like: <a href="mailto:[email protected]?body=The message's first paragraph.%0A%0aSecond paragraph.%0A%0AThird Paragraph.%0A%0ALink goes here">Link text goes here</a>

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• Terminate a python script from another python script

  - by Nick

  I've got a long running python script that I want to be able to end from another python script. Ideally what I'm looking for is some way of setting a process ID to the first script and being able to see if it is running or not via that ID from the second. Additionally, I'd like to be able to terminate that long running process. Any cool shortcuts exist to make this happen?

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• How to check with program in other programming-language (C,C++, etc) whether JAVA is installed and w

  - by Andreas Hornig

  Hi, I would like to know whether or not JAVA is installed and where (path). Perhaps it sounds strange, but my aim is to let BOINC (coded in C++) check the JAVA installation and then start my JAVA app. But therefore I need to know if BOINC can start JAVA natively, or if I have to also send the JRE and then start my app with this not installed JRE. So is there a way to check the installation first? thank you in advance! Andreas

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• What happens when a computer starts?

  - by darkie15

  Hi All, Hopefully the title isn't funny to be ignored! But I have a genuine interest in understanding what happens when a computer is turned on. i.e. how the computer works on startup, various initializations that take place. For example, is bootstrap loader the first step, when are device drivers loaded etc.. Please guide me to understand. Regards, darkie

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• How to save video from a url to disk, also how to begin playback after some buffering?

  - by Shizam

  First question is, given a url to an mp4 video, how can I save that file to disk? The followup to that is while its saving, can I begin playback after its buffered some of the video to disk or do I have to wait for the entire file to be written and then: MPMoviePlayerController* theMovie=[[MPMoviePlayerController alloc] initWithContentURL:theURL]; using the path to the local file. Thanks, Sam

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• How to save video from a url to disk, also how to begin playback after some buffering?

  - by Shizam

  First question is, given a url to an mp4 video, how can I save that file to disk? The followup to that is while its saving, can I begin playback after its buffered some of the video to disk or do I have to wait for the entire file to be written and then: MPMoviePlayerController* theMovie=[[MPMoviePlayerController alloc] initWithContentURL:theURL]; using the path to the local file. Thanks, Sam

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• how do i display plus sign in the master row in the xceed datagrid?

  - by Vitalik

  I am using an Xceed datagrid for WPF. I have some rows with details. Right now i expand the details when a user clicks on the first cell in the master row. I'd like to have a plus/minus sign functionality just like with grouping.

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• Getting 'The argument 1 of the xml data type method "modify" must be a string literal' while inserti

  - by sam

  Trying the following code. But getting 'The argument 1 of the xml data type method "modify" must be a string literal' error. searched alot but cant find any solution for this problem SET @Path = '/@ParentNodeName/@NodeName/child::*' SET @x.modify('insert attribute status {sql:variable("@status")} as first into (' + @Path + ')[1]')

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• Unbalanced calls to begin/end appearance transitions for <ViewController>,<Tab>

  - by onkar

  I am trying to implement Tabs into my secondView.On button touch(from ViewController.m) I am navigating to secondView(Tabs). In my Tabs.xib file I have added a TabBar at bottom and it is custom class of UITabBar. ViewController.m - (IBAction)touchedInside:(id)sender { NSLog(@"touhced up inside"); Tabs *temp = [[Tabs alloc]initWithNibName:@"Tabs" bundle:nil]; [self.navigationController pushViewController:temp animated:YES]; [self presentViewController:temp animated:YES completion:nil]; } Tabs.m - (void)viewDidLoad { [super viewDidLoad]; AppDelegate *appDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate]; UITabBarController *tabBarController = [[UITabBarController alloc]init]; /* Tab_1 *firstView = [[Tab_1 alloc] init]; UITabBarItem *item1 = [[UITabBarItem alloc]initWithTitle:@"First" image:nil tag:1]; [firstView setTabBarItem:item1]; NSLog(@"after first tab is added"); Tab_2 *secondView = [[Tab_2 alloc] init]; UITabBarItem *item2 = [[UITabBarItem alloc]initWithTitle:@"Sec" image:nil tag:1] ; [secondView setTabBarItem:item2]; NSLog(@"after second tab is added"); [tabBarController setViewControllers:[NSArray arrayWithObjects:firstView,secondView,nil] animated:NO]; NSLog(@"after tab is added"); [appDelegate.window addSubview:tabBarController.view]; NSLog(@"after view is added"); */ appDelegate.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]]; // Override point for customization after application launch. UIViewController *viewController1 = [[Tab_1 alloc] initWithNibName:@"Tab 1" bundle:nil]; UIViewController *viewController2 = [[Tab_2 alloc] initWithNibName:@"Tab 2" bundle:nil]; UIViewController *viewController3 = [[Tab_2 alloc] initWithNibName:@"Tab 1" bundle:nil]; tabBarController.viewControllers = [NSArray arrayWithObjects:viewController1, viewController2, viewController3, nil]; appDelegate.window.rootViewController = self.tabBarController; [appDelegate.window makeKeyAndVisible]; Tabs *temp = [[Tabs alloc]initWithNibName:@"Tabs" bundle:nil]; [self.navigationController presentModalViewController:temp animated:NO]; } Errors Unbalanced calls to begin/end appearance transitions for <ViewController: 0x6833c80>. 2012-12-06 09:57:48.963 demoTabs[667:f803] Unbalanced calls to begin/end appearance transitions for <Tabs: 0x6a3fc90>.

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• Is there a better way to write this in jQuery?

  - by user302805

  $(".sectionHeader").click(function() { var row = $(this).parent(); while (row.next().length != 0) { row = row.next(); if (row.children().first().is('th')) return; row.toggle(); } });

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