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• [[alloc] init] as a factory method

  - by iter

  I want to initialize an instance of one of the subclasses of a superclass depending on the arguments to init: [[Vehicle alloc] initWithItinerary: shortWay]; // returns a bicycle [[Vehicle alloc] initWithItinerary: longWay]; // returns a car I can't find examples of code like this. I wonder if this is not idiomatic in Objective C, or I simply am not looking in the right places.

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• How can I compare two lists in python and return matches.

  - by tehryan

  I want to take two lists and find the values that appear in both. a = [1, 2, 3, 4, 5] b = [9, 8, 7, 6, 5] returnMatches(a, b) would return [5], for instance.

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• Need a better regex for group matching

  - by user350233

  Hi, Presently I'm using two regx: ABC.*1EFG ABC.*2HIJ to retrieve Line 1 and Line 2 from a text file. Is there a better single regex, so that both the lines(L1 and L2) from below can be matched. Line 1: ABCanystring1EFGanystring Line 2: ABCanystring2HIJanystring Line 3: ABCanystring2LMNanystring . . . Line n Thanks you in advance, Su

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• How to add a button on outlook toolbar to a custom form?

  - by eqbridges

  Hi I have an Outlook form that I'd like to provide ready access to by adding a button or link to it on the outlook toolbar. How can I customize the toolbar to do this? Essentially, a single click of the button on the toolbar should bring up the custom form. This should work in Outlook 2003 and 2007 (preferably). If it only works in 2007 that would be acceptable. Thanks!

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• How can I run Gcov over an installed Cocoa application?

  - by Joe

  I have a Cocoa application which uses an installer. I want to be able to run code coverage over the code (after it has been installed). This is not the usual unit-test scenario where a single binary will run a suite of tests. Rather, the tests in question will interact with the UI and the app back-end whilst it is running, so I ideally want to be able to start the application knowing that Gcov is profiling it and then run tests against it. Any ideas?

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• google calendar java api

  - by tommaso

  Hello, I have an object of CalendarEntry I know that http://www.google.com/calendar/feeds/[email protected]/allcalendars/full is the feed url of all calendars but how I can get this feed url from CalendarEntry instance? Because I wanna post a new entry in a specified calendar and I need this url. Thanks!

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• Does the Liskov Substitution Principle apply to subtype which inherited from abstract class?

  - by A.A.

  loosely speaking, Liskov Substitution Principle states that a derived class can be substitute in place of the base class without affecting the user. In the case when the base class is an abstract class, which means no user is using an instance of the base class, does the Liskov inheritance restrictions still apply to the derived class?

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• Message reason why Execute method failed

  - by waanders

  I use the DAO method Execute to delete some records. If this fails this is clear by checking RecordsAffected (it will be 0). But is it possible to get the error message (for instance, to log or to show to the user)? I've try to delete the records by hand in the Table grid I get a clear dialog message, e.g. "The record cannot be deleted or changed because tabel x includes related records".

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• Find Nth occurance of a character in a string

  - by jozi

  I need help with creating a C# method that returns the index of the Nth occurance of a character in a string. For instance, the 3rd occurance of the character 't' in the string "dtststx" is 5.

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• xdebug profiler output strange results

  - by nic28

  I'm using xdebug to profile some PHP code on Windows and using WinCacheGrind/Webgrind to analyse the output, but I'm getting some strange results. Specifically, the total cumulative time for a single method is greater than 100%! How is it possible that more time is spent executing this function's code and all the functions that it calls than the total time it took to execute the whole script? What am I missing here?

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• Netbeans configuration problem

  - by Yatendra Goel

  I am using Netbeans 6.8 The problem is that the projects explorer (that displays all the projects and their contents) displays each package as a node. For instance, if there is package hierarchy like this; com.mycompany.myproject.package1.package1.1 then it displays 5 nodes for the five packages which is very disturbing while development. Is there any way by which I can configure it(Netbeans) so that it groups all the subpackages of a package under one node and displays the subpackages only when I expand the package node?

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• Iphone sdk code to capture images at 15 FPS on 3g mobile and sending to ffmpeg server .

  - by user286517

  I'm writing an app code to do video recording on iPhone much like all the available apps :) ... All im trying to do is capture screen from iPhone camera on 3g mobile and sending them to server .. but want some time efficient approach for sending to server and capturing image sequences ... its like i want to send 15 images / second to server in one single go :P i've set up server with FFMPEG and other codecs so their is no issue in generation of live video / stream .... Help me ...special reward for best helping answer

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• Getting default value for java primitive types

  - by ripper234

  I have a java primitive type at hand: Class c = int.class; // or long.class, or boolean.class I'd like to get a 'default value' for this class - specifically the value is assigned to fields of this type if they are not initialized. E.g., '0' for a number, 'false' for a boolean. Is there a generic way to do this? I tried c.newInstance() But I'm getting an InstantiationException, and not a default instance.

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• Can I really have just one column in UITableView?

  - by mystify

  From the docs: A table view in the UIKit framework is limited to a single column because it is designed for a device with a small screen.

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• Scalable images in Java

  - by CodeGuy

  I anticipate using some images in my Java application. These images will be drawn onto my JPanel using g.drawImage(). The JPanel is resizable and the images should scale as the JPanel increases/decreases in size Two questions: What image format is best for this type of desired scalable image? For instance, in this application, an image of size 100x100 may be scaled into an image of size 30x30 or 10x10 or 300x300. How can I write code to do this scaling?

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• URL structure preference - to slash or not to slash?

  - by TheDeadMedic

  I'm using custom post types in WordPress 3.0 to manage 'courses' (or seminars, lectures, whatever term you'd prefer to have in mind). Now for viewing a single 'course', the url structure is; /course/course-name/ But for multiple courses? /courses/category/category-name/ Or... /course-category/category-name/ Or something entirely different?

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• (iphone) how can I tell I need a 3.0 + iOS installed device when looking at apple doc?

  - by Eugene

  Hi, I've seen iphone related open source library which says something like, "You need 4.0+ iOS build environment but the code will run on 3.0+ iOS device." I wonder how those two requirements can differ and how can I tell a minimum 'device' iOS version which a certain api would need. For instance I want to use UIGestureRecognizer but the apple doc says it's 3.2+, but I want my app run on 3.12+. Is there a difference between build os requirement and device os requirement to run an app? Thank you

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• Concurrent processes do not utilize all available CPU

  - by metdos

  I run some processes on an EC2 cc2.8xlarge instance which has 32 virtual processors. For some type of processes, when I run 16 processes on parallel, all of them use 100% of CPU cycles. But for other type of processes, they are not using 100% CPU and they finish considerably slower than a single thread. There is no time spend on IO and all data is served from memory. Do you have any idea about the reason of this problem?

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• java.util.Random zero argument enquiry

  - by deerb

  I am trying to code a game following instructions contained in an OU TMA document which read: In the constructor, write code to assign a new instance of Random to ran which you should create using the Random class's zero argument constructor Will this code work? Random ran = new Random(0) ; I am a relative newbie to Java, and I don't understand exactly what the instructions mean

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• Can we write an EOF character ourselves?

  - by Apoorv

  Most of the languages like C++ when writing into a file, put an EOF character even if we miss to write statements like : filestream.close However is there any way, we can put the EOF character according to our requirement, in C++, for an instance. Or any other method we may use apart from using the functions provided in C++. If you need to ask more of information then kindly do give a comment. Thanks in advance.

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• Hibernate OneToOne - how to set null value?

  - by EugeneP

  If I want to save a linked instance as null in a database, what should I do? I cannot simply pass null to obj.setOneToOneAssociatedObject(null) Still, I want to save this link as null (table allows it).

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• best alternative to in-definition initialization of static class members? (for SVN keywords)

  - by Jeff

  I'm storing expanded SVN keyword literals for .cpp files in 'static char const *const' class members and want to store the .h descriptions as similarly as possible. In short, I need to guarantee single instantiation of a static member (presumably in a .cpp file) to an auto-generated non-integer literal living in a potentially shared .h file. Unfortunately the language makes no attempt to resolve multiple instantiations resulting from assignments made outside class definitions and explicitly forbids non-integer inits inside class definitions. My best attempt (using static-wrapping internal classes) is not too dirty, but I'd really like to do better. Does anyone have a way to template the wrapper below or have an altogether superior approach? // Foo.h: class with .h/.cpp SVN info stored and logged statically class Foo { static Logger const verLog; struct hInfoWrap; public: static hInfoWrap const hInfo; static char const *const cInfo; }; // Would like to eliminate this per-class boilerplate. struct Foo::hInfoWrap { hInfoWrapper() : text("$Id$") { } char const *const text; }; ... // Foo.cpp: static inits called here Foo::hInfoWrap const Foo::hInfo; char const *const Foo::cInfo = "$Id$"; Logger const Foo::verLog(Foo::cInfo, Foo::hInfo.text); ... // Helper.h: output on construction, with no subsequent activity or stored fields class Logger { Logger(char const *info1, char const *info2) { cout << info0 << endl << info1 << endl; } }; Is there a way to get around the static linkage address issue for templating the hInfoWrap class on string literals? Extern char pointers assigned outside class definitions are linguistically valid but fail in essentially the same manner as direct member initializations. I get why the language shirks the whole resolution issue, but it'd be very convenient if an inverted extern member qualifier were provided, where the definition code was visible in class definitions to any caller but only actually invoked at the point of a single special declaration elsewhere. Anyway, I digress. What's the best solution for the language we've got, template or otherwise? Thanks!

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• Port AS3/Flex app to iPhone

  - by John

  I believe Adobe tools like CS5 have ways to output as an iPhone app, but what about a regular AS3 or Flex project? Are there any tools to auto-port, or AS3/Flex iPhone implementations out there? Out of interest, how does the CS5 thing work? Is it a totally different code-path or something less drastic? For instance Flash supports Shapes and Timelines, etc... do they in fact provide an iPhone Flash runtime of some sort?

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• Java interface 'interview'-style problem

  - by Codenotguru

  Problem/Task: Write an interface with one method and two classes that implement this interface. Now write a main method with an array that holds an instance of each class. Using a for-each loop, invoke the method upon each item. Is this an interview question? (I'm not sure if the author meant to post this as a question or was looking for an answer to the above.)

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• An interview question on array comparison

  - by user288084

  There are two arrays with equivalent size. How to decide whether these two arrays contain the same set of elements, but the orders of these elements in the respective arrays are different. For instance. A = [a, b, c] B= [b, c, a]

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