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  • python decorator to add function to list in current scope

    - by AlexH
    Goal: Make a decorator which can modify the scope that it is used in. If it worked: class Blah(): # or perhaps class Blah(ParentClassWhichMakesThisPossible) def one(self): pass @decorated def two(self): pass Blah.decorated ["two"] Why? I essentially want to write classes which can maintain specific dictionaries of methods, so that I can retrieve lists of available methods of different types on a per class basis. errr..... I want to do this: class RuleClass(ParentClass): @rule def blah(self): pass @rule def kapow(self): pass def shazam(self): class OtherRuleClass(ParentClass): @rule def foo(self): pass def bar(self): pass RuleClass.rules.keys() ["blah", "kapow"] OtherRuleClass.rules.keys() ["foo"]

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  • Using Gradle with an existing Android project

    - by Tom Reznik
    I have an existing Android project with the following structure: - ProjectName -- AndroidManifest.xml -- local.properties -- project.properties -- assets -- libs (containing all jars) -- modules (containing all library projects my project depends on) -- res -- src ---- com/namespace/projectname (all my classes including main activity are here) I haven't been using any specific build system to build my project other than the one provided by default with the Android Studio IDE (though the project was originally created with IntelliJ CE. I would like to use Gradle with the android plugin and do some work on my build process. I have tried several configurations in order to achieve this and have failed to complete a successful build every time. What's the recommended approach in this scenario? should I change my project structure? or is it possible to configure gradle using the existing structure? Any help would be greatly appreciated. Thanks!

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  • What to Learn: Rails 1.2.4 -> Rails 3

    - by Saterus
    I've recently convinced my management that our outdated version of Rails is slowing us down enough to warrant an upgrade. The approach we're taking is to start a fresh project with current technology rather than a painful upgrade. Our requirements for the project have changed and this will be much easier. The biggest problem is actually that my knowledge of Rails is out of date. I've dealt only with Rails 1.2.4 while the rest of the world has moved on long ago. What topics have I missed by being buried in my work instead of keeping up with the current Rails fashion? I'm hesitant to dig through blogs at random because I'm not sure how much has changed between the intervening versions of Rails. It's no use to learn Rails 2.1-2.3 specific stuff that is no longer useful for Rails 3.

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  • Using Qt with custom MinGW

    - by ereOn
    Hi, I don't know if this question would fit better on superuser.com, but since it's rather compiler related, I give it a try here. I have to use Qt with a specific version of gcc (4.5). I downloaded the last official Qt release for Windows (Vista, 32 bits version) and didn't install the shipped MinGW version; I just installed the Qt libraries/binaries. In a console, when I type qmake && make, make fails, complaining that 'g++' is not recognized as an internal command. If I type g++ in the same console, I however have the following output: g++: no input files So g++ is definitely recognized. For those who may ask, both the Qt binaries directory and MinGW binaries directory are in the system PATH environment variable. What could be wrong here ?

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  • datepicker common options but different altField altFormat

    - by Legio X
    Using jquery-ui datepicker I would like to use altField and altFormat to 2 datepickers on the same page but I can't figure out how to add these 2 options which are specific to each datepicker along with my common set of options. Code sample below. #dt1 does not work, but #dt2 works. How can I get #dt1 to work while using the datepickerOpts? var datepickerOpts = { minDate: -2, changeMonth: true, changeYear: true, dateFormat: 'yy-mm-dd' }; $('#dt1').datepicker(datepickerOpts, {altField: '#alt1', altFormat: 'mm-dd-yy' }); $('#dt2').datepicker({ minDate: -2, changeMonth: true, changeYear: true, dateFormat: 'yy-mm-dd', altField: '#alt2', altFormat: '@' });

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  • navigation framework in silverlight 3 skipping constructor when usercontrol is of a derived type

    - by tarren
    Hi: I am using the NavigationFramework in Silverlight 3, and am running into issues where the constructor of the UserControl in the xaml I am loading is not being called, and I believe this is because the UserControl in the xaml I am calling is actually derived from another user control. I have stepped through the debugger with specific break points and the constructor is being ignored completey. I have MyWindowBlue which is of type uctrlBaseMyWindow. The constructor for uctrlBaseMyWindow is being called when the xaml is 'navigated to' but the constructor for MyWindowBlue is being ignored. This is not the case if I add the user control via markup directly. Anyone else have this issue? The code I am using to navigate to the MyWindowBlue is this.MyContentFrame.Navigate(new Uri("/Controls/uctrlMyWindowBlue.xaml", UriKind.Relative)); Has anyone run into this or could offer any help? Thanks

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  • Screening (multi)collinearity in a reggresion model

    - by aL3xa
    I hope that this one is not going to be "ask-and-answer" question... here goes: (multi)collinearity refers to extremely high correlations between predictors in the regression model. How to cure them... well, sometimes you don't need to "cure" collinearity, since it doesn't affect regression model itself, but interpretation of an effect of individual predictors. One way to spot collinearity is to put each predictor as a dependent variable, and other predictors as independent variables, determine R2, and if it's larger than .9 (or .95), we can consider predictor redundant. This is one "method"... what about other approaches? Some of them are time consuming, like excluding predictors from model and watching for b-coefficient changes - they should be noticeably different. Of course, we must always bare in mind specific context/goal of analysis... Sometimes, only remedy is to repeat a research, but right now, I'm interested in various ways of screening redundant predictors when (multi)collinearity occurs in a regression model.

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  • .NET: Split web application into multiple DLLs?

    - by aximili
    Is it possible to compile some code-behind (.cs) files (eg. all .cs file under a particular folder) into one DLL, and the rest into another DLL? We have some common codes and pages (aspx + cs files) that we want to use across many websites. We want this to compile into a DLL (eg. Common.dll). The rest of the files will be website-specific, unique to each website and should compile into another DLL (eg. Website3.dll) This is so that if we make changes to a common code-behind, we can just publish Common.dll onto all our websites. Is that possible using VS Web Developer Express 2008? Thanks in advance. EDIT: We are already using a class library, but not for pages (aspx+cs)

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  • The difference between the 'Local System' account and the 'Network Service' account?

    - by jmatthias
    I have written a Windows service that spawns a separate process. This process creates a COM object. If the service runs under the 'Local System' account everything works fine, but if the service runs under the 'Network Service' account, the external process starts up but it fails to create the COM object. The error returned from the COM object creation is not a standard COM error (I think it's specific to the COM object being created). So, how do I determine how the two accounts, 'Local System' and 'Network Service' differ? These built-in accounts seem very mysterious and nobody seems to know much about them.

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  • Where to handle fatal exceptions

    - by Stephen Swensen
    I am considering a design where all fatal exceptions will be handled using a custom UncaughtExceptionHandler in a Swing application. This will include unanticipated RuntimeExceptions but also custom exceptions which are thrown when critical resources are unavailable or otherwise fail (e.g. a settings file not found, or a server communication error). The UncaughtExceptionHandler will do different things depending on the specific custom exception (and one thing for all the unanticipated), but in all cases the application will show the user an error message and exit. The alternative would be to keep the UncaughtExceptionHandler for all unanticipated exceptions, but handle all other fatal scenarios close to their origin. Is the design I'm considering sound, or should I use the alternative?

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  • How to extract all IDs accessed from a mysql general log using the linux commandline?

    - by shlomoid
    This should be a trivial question for anyone who's good with bash/sed/awk. Unfortunately, I'm not, yet :) I've got a general log from MySQL which contains some queries that have a common parameter, they query on a specific id field. The queries look like update tbl set col='binary_values' where id=X; I need to process the log and extract all the IDs that these queries touched, each in it's own line. The purpose of this is to figure out how many times each ID is accessed. Eventually I'd group and count the values. The binary values are indeed binary junk, so they kinda messed up some things I've been trying to do. Eventually we solved the problem temporarily using a python script, but I'm sure the linux command line tool set can do it too. How would you do it?

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  • How do i style a JSON feed in my view?

    - by stephenmurdoch
    My rails app gets the following JSON feed from mixcloud and sticks the results into my index page At the moment when I do this, the entire contents of my feed are displayed unformatted in one big blob of scary looking text (without the curly JSON brackets) I only want to display specific values from the feed in the view. From the feed in question lets say for simplicity that I just wanted to display all values with a key of "url" In case I'm doing something wrong here's my code: # podcast controller def index # I'm using a class method to get the feed @feed = Podcast.feed end # podcast model def self.feed feed = JSON.parse(open("http://api.mixcloud.com/alivefrommaryhill/feed").read) end # index.html.haml .feed = @feed I can't figure out how to style the results and display only certain items from the feed. Is my approach wrong?

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  • .htaccess not working in subfolder

    - by Staffan Estberg
    Hello, I have a couple of sites that are currently under development and I've put them under a specific subfolder for clients/co-workers to view - "http://dev.staffanestberg.com/site-name/". I've run into some problems getting the sites working with .htaccess. I can reach the index page by typing in the url for a site folder but neither img/style/js/etc linking or page rewriting works. Looking for a solution to this, Apache's "RewriteBase" seems to be the most likely one, however I can't get it to work. Tried RewriteBase http://dev.staffanestberg.com/site-name/ RewriteBase /site-name What would be the correct method? Thanks in advance, -Staffan

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  • Unable to open a file for writing

    - by asdasdas
    I am trying to write to a file. I do a file_exists check on it before I do fopen and it returns true (the file does exist). However, the file fails this code and gives me the error every time: $handle = fopen($filename, 'w'); if($handle) { flock($handle, LOCK_EX); fwrite($handle, $contents); } else { echo 'ERROR: Unable to open the file for writing.',PHP_EOL; exit(); } flock($handle, LOCK_UN); fclose($handle); Is there a way I can get more specific error details as to why this file does not let me open it for writing? I know that the filename is legit, but for some reason it just wont let me write to it. I do have write permissions, I was able to write and write over another file.

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  • Backing up locally modified and new source files

    - by eran
    I'm wondering how other programmers are backing up changes that are not under source control yet, be it new files or modified ones. I'm mostly referring to medium size jobs - hardly worth the effort of making a private branch, but taking more than a day to complete. This is not a vendor-specific question - I'd like to see if various products have different solutions to the problem. I'd appreciate answers referring to SVN and distributed SCCs, though. I'm mostly wondering about that latters (Mercurial, GIT etc.) - it's great that you have your own local repo, but do you back it up on a regular basis along with your source files? Note - I'm not asking about a general backup strategy. For that, we have IT. I'm seeking the best way to keep locally modified stuff backed-up before they are checked back into the main repo.

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  • How to prevent "This program might not have installed correctly" messages on Vista

    - by Jason
    I have a product setup executable that copies some files to the user's hard drive. It's not a typical installer in the normal sense (it doesn't add anything to the Start Menu or Program Files folders). Each time the setup program is run on Vista, after the exe terminates, Vista produces a task dialog: This program might not have installed correctly Reinstall using recommended settings This program installed correctly Is there a function I need to call from the exe or registry entry to set, to indicate to the operating system that the program installed correctly (or to at least supress this message)? Related questions: http://stackoverflow.com/questions/1069135/this-program-might-not-have-installed-correctly-message-in-windows-7-rc (for Windows 7-specific issues)

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  • Reversing the effects of mkimage to get an original gzipped file back

    - by Alex Marshall
    Hello, We develop for a specific embedded device at our company, and part of that is making initial root disks that get loaded onto the devices over ethernet via netboot. We've experienced some problems, and as a result, the original folder with the contents of the initial root disks was lost along with its backups, but we do still have the initrd images, that have been created by gzipping the contents of a ramdisk that's been mounted as a local loop device, and then running mkimage on the gzipped file. Is there any way to undo the effects of mkimage and obtain the original gzipped content so that we can recover the original images ?

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  • linq to sql report tables in query

    - by luke
    Here's the method i want to write: public static IEnumerable<String> GetTableNames(this IQueryable<T> query) { //... } where the IQueryable is a linq-to-sql query (is there a more specific interface i should use?). then if i had a query like this var q = from c in db.Customers from p in db.Products where c.ID = 3 select new {p.Name, p.Version}; q.GetTableNames();// return ["Customers", "Products"] basically it would show all the tables that this query touches in the db, it is ok to execute the query to figure this out too (since that is going to happen anyway)? any ideas?

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  • same flash file (.swf) downloaded multiple times on a page

    - by Gunjan
    I have a page that has a table with each row corresponding to an audio file. The last cell in each row embeds a simple flash audio player. The problem is that the flash file for the player is being downloaded for each row separately and as soon as rows go beyond 40-50 it crashes the browser. I tried using different players (1pixelout, flash-mp3-player) and the problem is still there, so its not a player specific issue. Is there any way to cache the player so that it is only downloaded once?

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  • jquery $(window).width() and $(window).height() return different values when viewport has not been r

    - by Manca Weeks
    I am writing a site using jquery that repeatedly repeatedly calls $(window).width() and $(window).height() to position and size elements based on the viewport size... In troubleshooting I discovered that I am getting slightly different viewport size reports in repeated calls to the above jquery functions when the viewport is not resized... Wondering if there is any special case anyone knows of when this happens, or if this is just the way it is. The difference in sizes reported are 20px or less, it appears. It happens in Safari 4.0.4, Firefox 3.6.2 and Chrome 5.0.342.7 beta on Mac OS X 10.6.2... I didn't test other browsers yet because it doesn't appear to be specific to the browser. I was also unable to figure out what the difference depends upon - if it isn't the viewport size, could there be another factor that makes the results differ? Any insight would be appreciated... Thanks MAnca

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  • Better product to develop for, iPad or Android based tablet in a purely business related application

    - by Caylem
    Hey guys Just wondering what you'd suggest as the best platform for developing a business application for a tablet device. The application needs to be multitouch, have access to a maps API, a database on the device. It will not be going on sale in the app store or Androids market, it is purely for specific business task and not for the general consumer. Obviously the options seem to be iPhone OS and the iPad or Android and an Android tablet device. The form factor for the end product requires something in the region of 8 inch+ screen and enough processing power to provide a good experience for the end user. Any help would be much appreciated. Thanks

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  • How do I get bison/flex to restart scanning after something like token substitution?

    - by chucknelson
    Is there a way to force bison and/or flex to restart scanning after I replace some token with something else? My particular example would be with replacement for a specific word/string. If I want a word of hello to be replaced by echo hello, how can I get flex or bison to replace hello and then start parsing again (to pick up 2 words instead of just one). So it would be like: Get token WORD (which is a string type) If hello, replace token value with echo hello Restart parsing entire input (which is now echo hello) Get token WORD (echo) Get token WORD (hello) I've seen very tempting functions like yyrestart(), but I don't really understand what that function in particular really accomplishes. Any help is greatly appreciated, thanks!

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  • Starting self hosted WCF services on demand

    - by Pieter
    Is it possible to start self hosted WCF services on demand? I see two options to accomplish this: Insert a listener in the self hosted WCF's web server and spin up a service host when a request for a specific service comes in, before WCF starts looking for the existence of that endpoint; or Integrate a web service in process, start a service host for a request if it isn't running yet and redirect the request to that service host (like I suspect IIS does). I cannot use IIS or WAS because the web services need to run in process with the UI business logic. Which is feasible and how can I accomplish this? EDIT: I cannot just start the service hosts because there are hundreds, most (about 95%) of which are (almost) never used but need to be available. This is for exposing a business logic layer of 900 entities.

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  • 2d parabolic projectile

    - by ndg
    I'm looking to create a basic Javascript implementation of a projectile that follows a parabolic arc (or something close to one) to arrive at a specific point. I'm not particularly well versed when it comes to complex mathematics and have spent days reading material on the problem. Unfortunately, seeing mathematical solutions is fairly useless to me. I'm ideally looking for pseudo code (or even existing example code) to try to get my head around it. Everything I find seems to only offer partial solutions to the problem. In practical terms, I'm looking to simulate the flight of an arrow from one location (the location of the bow) to another. It strikes me there are two distinct problems here: determining the position of interception between the projectile and a (moving) target, and then calculating the trajectory of the projectile. Any help would be greatly appreciated.

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  • Differentiate generic methods by type parameters only using reflection?

    - by Brian Vallelunga
    I'm trying to use reflection to get a specific MethodInfo of a class, but am unsure how to differentiate between the two following methods: public class Test { public IBar<T1> Foo<T1>(); public IBar<T1, T2> Foo<T1, T2>(); } How can I get a reference to the different Foo methods, assuming I know the number of type parameters? Just calling typeof(Test).GetMethod("Foo") will throw an exception that the method name is ambiguous and there aren't a differing number of parameters to check.

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