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  • Python New-style Classes and the Super Function

    - by sfjedi
    This is not the result I expect to see: class A(dict): def __init__(self, *args, **kwargs): self['args'] = args self['kwargs'] = kwargs class B(A): def __init__(self, *args, **kwargs): super(B, self).__init__(args, kwargs) print 'Instance A:', A('monkey', banana=True) #Instance A: {'args': ('monkey',), 'kwargs': {'banana': True}} print 'Instance B:', B('monkey', banana=True) #Instance B: {'args': (('monkey',), {'banana': True}), 'kwargs': {}} I'm just trying to get classes A and B to have consistent values set. I'm not sure why the kwargs are being inserted into the args, but I'm to presume I am either calling init() wrong from the subclass or I'm trying to do something that you just can't do. Any tips?

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  • Perl: calculating a delta of years from a date

    - by Spiros
    Hello, I am trying to figure out a way to calculate the year of birth for records when given the age to two decimals at a given date - in Perl. To illustrate this example consider these two records: date, age at date 25 Nov 2005, 74.23 21 Jan 2007, 75.38 What I want to do is get the year of birth based on those records - it should be, in theory, consistent. The problem is that when I try to derive it by calculating the difference between the year in the date field minus the age, I run into rounding errors making the results look wrong while they are in fact correct. I have tried using some "clever" combination of int() or sprintf() to round things up but to not avail. I have looked at Date::Calc but cant see something I can use. p.s. As many dates are pre-1970, I cannot not unfortunately use UNIX epoch for this.

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  • Limit on FileReference uploads?!

    - by Rudy
    Hello, I am currently uploading files in ActionScript 3 using the upload() method of the FileReference class. I built an uploader than can do simultaneous or parallel uploads, having a variable set the number of maximum uploads at a time. I noticed that for Internet Explorer I could be uploading 10 or more files simultaneously, but FireFox and Safari seems to cap the number of uploads to 2. That is, when I call the upload method on per say, 3 files, only 2 will get events back (such as ProgressEvent.PROGRESS). Only when one of the 2 uploads finishes, then the 3rd one will start. This behavior does not happen for Internet Explorer. I have tried with a large number of files, and some big files, to make sure this behavior was consistent. I was wondering if anyone noticed this behavior please, and if so, what is the reason for this behavior please? I appreciate your help, Thank you very much, Rudy

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  • In java getting different value for TimeZone.getDefault().getID() on different system

    - by Deepak Chaudhry
    I am getting different value for TimeZone.getDefault().getID() on different systems. For example, in case of Indian standard time, On one of the system we are getting "GMT+5:30": while on another we are getting "Asia/Calcutta". We are expected to get "Asia/calcutta" strings on all machines. Why is there an inconsistency for such behavior? Is there any way to get consistent behavior across different systems windows/MAC? What is the best way to get client time zone programmatically using Java?

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  • Java Swing app hangs when run in normal mode but runs fine in debug mode

    - by snocorp
    I am writing a basic Java application with a Swing front-end. Basically it loads some data from a Derby database via Apache Cayenne and then displays it in a JTable. I'm doing my development in Eclipse and I don't think it's important but I'm using Maven for dependencies. Now this works fine when I run using Debug but it seems to hang the display thread when I use the Run button. I've done a thread dump and I'm not 100% certain but everything looks good. I used Java VisualVM and the threads look fine there as well. Strangely it seems to work intermittently. It's pretty consistent though and easy to reproduce. If anyone has any ideas, I'm all out of them.

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  • data between pages: $_SESSION vs. $_GET ?

    - by Haroldo
    Ok, firstly this is not about forms this is about consistent layout as a user explores a site. let me explain: If we imagine a (non-ajax) digital camera online store, say someone was on the DSLR section and specified to view the cameras in Gallery mode and order by price. They then click onto the Compact camera's page. It would be in the users interests if the 'views' they selected we're carried over to this new page. Now, i'd say use a session - am i wrong? are there performance issues i should be aware of for a few small session vars ( ie view=1 , orderby=price) ?

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  • How do you PEP 8-name a class whose name is an acronym?

    - by Arrieta
    I try to adhere to the style guide for Python code (also known as PEP 8). Accordingly, the preferred way to name a class is using CamelCase: Almost without exception, class names use the CapWords convention. Classes for internal use have a leading underscore in addition. How can I be consistent with PEP 8 if my class name is formed by two acronyms (which in proper English should be capitalized). For instance, if my class name was 'NASA JPL', what would you name it?: class NASAJPL(): # 1 class NASA_JPL(): # 2 class NasaJpl(): # 3 I am using #1, but it looks weird; #3 looks weird too, and #2 seems to violate PEP 8. Thoughts?

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  • Navigating from VB.NET code to C# code problem

    - by user181218
    Hi, There seemes to be a consistent problem with the following situation: Say you have a VS2008 solution, consisting of a (say console) application written in vb.net, and a class library written in c#. The application references the class library project. This, of course, complies and works well. However, when you right-click (in the vb.net application code) a function prototype/object type defined in the class library, and select "Go to definition", the object browser opens providing you with the the list of methods available for the class the class library consists of. BAD. However, if you try to do the same when both the application and cl are in c#, this works just fine and you navigate driectly to the relevant function/class.GOOD. Known issue? Solvable?

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  • How to create a compact Qt4 vBoxLayout

    - by Gearoid Murphy
    Hello all, I've got a vBoxLayout which contains 3 simple buttons, when I increase the size of the widget containing the layout, the spacing between the buttons increases. I would like to stop this behaviour and keep the buttons in a consistent and compact layout, regardless of the size of the parent widget. This is what I've got so far, but it doesn't change the spacing, any suggestions?, thanks. button_layout = new QVBoxLayout ; button_layout -> setSpacing(0); button_layout -> setContentsMargins(0,0,0,0);

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  • Shows different behaviour in release and debug mode .apk

    - by Ashique Muhammed
    My android application get restarted when I take the application from home screen, but this not a consistent. Some time it works perfectly (resume with the last visited activity). My application contains a splash screen activity and 5 activities in tab layout. Usage Start application After splash screen the application shows one of the activity in tab Press home button Try to invoke application from home screen Application gets restarted, it is not happening always. I am working on actual device. Android version 2.3.3 Here is the root activity in my manifest file. <activity android:name="com.nes.smrt.gui.Survey" android:theme="@android:style/Theme.NoTitleBar" android:screenOrientation="portrait" android:alwaysRetainTaskState="true"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> </intent-filter> </activity> Any help would be greatly appreciated!

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  • Whats the difference between Paxos and W+R>=N in Cassandra?

    - by user1128016
    Dynamo-like databases (e.g. Cassandra) provide ability to enforce consistency by means of quorum, i.e. a number of synchronously written replicas (W) and a number of replicas to read (R) should be chosen in such a way that W+RN where N is a replication factor. On the other hand, PAXOS-based systems like Zookeeper are also used as a consistent fault-tolerant storage. What is the difference between these two approaches? Does PAXOS provide guarantees that are not provided by W+RN schema?

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  • Calculating a delta of years from a date

    - by Spiros
    I am trying to figure out a way to calculate the year of birth for records when given the age to two decimals at a given date - in Perl. To illustrate this example consider these two records: date, age at date 25 Nov 2005, 74.23 21 Jan 2007, 75.38 What I want to do is get the year of birth based on those records - it should be, in theory, consistent. The problem is that when I try to derive it by calculating the difference between the year in the date field minus the age, I run into rounding errors making the results look wrong while they are in fact correct. I have tried using some "clever" combination of int() or sprintf() to round things up but to not avail. I have looked at Date::Calc but cant see something I can use. p.s. As many dates are pre-1970, I cannot not unfortunately use UNIX epoch for this.

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  • Ref to map vs. map to refs vs. multiple refs

    - by mikera
    I'm working on a GUI application in Swing+Clojure that requires various mutable pieces of data (e.g. scroll position, user data, filename, selected tool options etc.). I can see at least three different ways of handling this set of data: Create a ref to a map of all the data: (def data (ref { :filename "filename.xml" :scroll [0 0] })) Create a map of refs to the individual data elements: (def datamap { :filename (ref "filename.xml") :scroll (ref [0 0]) })) Create a separate ref for each in the namespace: (def scroll (ref [0 0])) (def filename (ref "filename.xml")) Note: This data will be accessed concurrently, e.g. by background processing threads or the Swing event handling thread. However there probably isn't a need for consistent transactional updates of multiple elements. What would be your recommended approach and why?

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  • criteria of software program being intelligent

    - by bobah
    Just out of curiosity, assuming there exists an software life form. How would you detect him/her? What are your criteria of figuring out if something/someone is intelligent or not? It seems to me that it should be quite simple to create such software once you set the right target (not just following a naive "mimic human-pass Turing Test" way). When posting an answer try also finding a counter example. I have real difficuly inventing anything consistent which I myself agree with. Warmup

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  • How can I set the Root Namespace property correctly in a C++/CLI application?

    - by Matthew Bowen
    I have a C++/CLI application in Visual Studio 2008 whose namespace follows the .NET guideline of CompanyName.TechnologyName[.Feature][.Design]. The problem is that there seems to be no way to set a multi-level namespace in the project's Root Namespace property. I have tried both CompanyName.TechnologyName and CompanyName::TechnologyName. It seems that I cannot have a Form control inside a namespace that is not the root namespace as this causes the resources it uses to not be found, thus to me it seems impossible to follow their guideline and be consistent with my C# applications. Is there a way to set this property to use multi-leveled namespaces or am I forced to use a root namespace that is simply one-level? Or is there a solution that I am overlooking? Any help would be appreciated. Thanks

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  • $(MSBuildStartupDirectory) in Visual Studio points to different places on different machines

    - by skolima
    In a large solution, I'm integrating Gendarme into Visual Studio 2008 compilation process. I am using GendarmeMsBuild task along with a .targets file to add a AfterBuild target to every project in the solution. I am looking for a way to import this file into .csproj files in a way that wouldn't require me to change the include path (the projects have different nesting levels). Apart from using NuGet SolutionDir variable, best way to solve this seemed to be to use $(MSBuildStartupDirectory). However, as it turns out, on some machines, using the same version of VS 2008 (as same updates installed, as far as I was able to check) this resolves to the solution directory, and on others to c:\Program Files (x86)\Microsoft Visual Studio 9.0\Common7\IDE. How can I either get this to always resolve to the solution folder or obtain the base folder in another consistent way?

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  • Python: Find X to Y in a list of strings.

    - by TheLizardKing
    I have a list of maybe a 100 or so elements that is actually an email with each line as an element. The list is slightly variable because lines that have a \n in them are put in a separate element so I can't simply slice using fixed values. I essentially need a variable start and stop phrase (needs to be a partial search as well because one of my start phrases might actually be Total Cost: $13.43 so I would just use Total Cost:.) Same thing with the end phrase. I also do not wish to include the start/stop phrases in the returned list. In summary: email = ['apples','bananas','cats','dogs','elephants','fish','gee'] start = 'ban' stop = 'ele' the magic here new_email = ['cats','dogs'] NOTES While not perfect formatting of the email, it is fairly consistent so there is a slim chance a start/stop phrase will occur more than once. There are also no blank elements.

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  • SDCC and malloc() - allocating much less memory than is available

    - by Duncan Bayne
    When I run compile this code with SDCC 3.1.0, and run it on an Amstrad CPC 464 (under emulation, with WinCPC 0.9.26 running on Wine): void _test_malloc() { long idx = 0; while (1) { if (malloc(5)) { printf("%ld\r\n", ++idx); } else { printf("done"); break; } } } ... it consistently taps out at 92 malloc()s. I make that 460 bytes, which leads me to a couple of questions: What is malloc() doing on this system? I was sort of hoping for an order of magnitude more storage even on a 64kB system The behaviour is consistent on 64kB systems and 128kB systems; do I have to perform some sort of magic to access the additional memory, like manual bank switching?

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  • Manipulating the case of the build macros in Visual Studio: $(TargetDir)

    - by miked
    I've come across a weird problem today in Visual Studio 2005. If I create a new configuration "NewConfiguration" for one of my projects. The output directory referred to by the project in $(TargetDir) is "/path/to/build/area/newconfiguration". Note the loss of capital letters, I'd expect it to be in "/path/to/build/area/NewConfiguration". In another project that I created yesterday, the capital letters are there. Normally this would be a problem, but it's part of a fairly complicated build system where some of it's on unix and we need to worry about case sensitive filename. Does anyone know where the source string for the Visual Studio macros like $(TargetDir) are stored so that I can get the case to be consistent and match what we need for our build system?

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  • Cancelling Two Way Data Binding In Silverlight

    - by DaveB
    I have an ObervableCollection of data items. This collection is bound to a ListBox. When the user selects a item from the listbox and clicks the Edit button a UserControl with the details of that item is displayed with the various properties bound to text boxes. Each binding mode is set for TwoWay. On this details UserControl, I would like to implement 2 buttons, OK and Cancel. This would be consistent with UIs in Windows. This application is using the Model-View_ViewModel pattern. Here is my question: 1) How can I implement the Cancel button when all the changes have already been committed?

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  • Most frustrating programming style you've encountered

    - by JaredPar
    When it comes to coding style I'm a pretty relaxed programmer. I'm not firmly dug into a particular coding style. I'd prefer a consistent overall style in a large code base but I'm not going to sweat every little detail of how the code is formatted. Still there are some coding styles that drive me crazy. No matter what I can't look at examples of these styles without reaching for a VIM buffer to "fix" the "problem". I can't help it. It's not even wrong, I just can't look at it for some reason. For instance the following comment style almost completely prevents me from actually being able to read the code. if (someConditional) // Comment goes here { other code } What's the most frustrating style you've encountered?

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  • How Do You Parse Column Data ?

    - by discwiz
    I am trying to parse a file generated by LGA Tracon that lists the position data for aircraft over a given time frame. The data of interest starts with TRACKING DATA and ends with SST and there are thousands of entries per file. The system generating the file, Common ARTS, is very rigid in its formatting and we can expect the column spacing to be consistent. Any help would be greatly appreciated. Thanks, Here is an image to preserve the exact formatting Here is a reduced text file. link text

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  • capturing click events on web-browser scrollbars

    - by The Code Pimp
    Hi, is it possible to capture a click event on a scrollbar? I have some code where i am observing the click and mousedown events on the document. However, it seems that when I click on the scrollbar, the event is not captured. This leads me to believe that the scrollbars aren't really part of the document. (Assumption :-)) Is this a correct assumption? What is the right way to do this so that the behaviour is consistent across all major browsers? sample code document.observe('click', function(evt){ //do something //blah blah blah }); Thanks

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  • Appropriate high level language to deal with binary data

    - by fortran
    Hi, I need to write a small tool that parses a textual input and generates some binary encoded data. I would prefer to stay away from C and the like, in favour of a higher level, (optionally) safer, more expressive and faster to develop language. My language of choice for this kind of tasks usually is Python, but for this case dealing with binary raw data can be problematic if one isn't very careful with the numbers being promoted to bignums, sign extensions and such. Ideally I would like to have records with named bitfields that are portable to be serialised in a consistent manner. (I know that there's a strong point in doing it in a language I already master, although it isn't optimal, but I think this could be a good opportunity to learn something new). Thanks.

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  • Refresh list of drawables in Eclipse?

    - by Matt Swanson
    When I add drawable resources to my project they do not show up in the list of drawables in the Reference Chooser. I checked the R file and there are references for the files. I have tried refreshing the project, cleaning the project, and fixing project properties and nothing seems to help. Sometimes a couple will randomly show up in there, but not all of them. The only consistent way I can get them to show up is to restart Eclipse. Any ideas? Thanks

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