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  • Null pointer exception on .iterator() call

    - by Peter
    I'm getting a strange NullPointerException, evidently thrown by the following line of code: Iterator<Note> it = notes.iterator(); I've checked, and at the time the java.util.TreeSet notes is always non-null (with 15 elements). The TreeSet API says nothing about iterator() throwing NullPointerExceptions. What else could be going here?

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  • Looking for a simple CMS with WYSIWYG and image gallery

    - by abeger
    I'm building a new site that consists entirely of: 8-10 pages of static content that rarely changes (like once every few months or once every year) An image gallery Since I don't plan to be the primary maintainer of the site, I'd like to use a CMS with some security and a WYSIWYG editor so non-web-savvy people can tweak the site when necessary. I started out using Drupal, but started wondering if it was overkill. So, two questions: 1) is it overkill? 2) What CMS would you recommend for a project this simple?

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  • looking for a proxy library

    - by gwegaweg
    i need to set up a proxy for cross-domain javascript. the problem is, i tried the simple fgets() , i discovered, javascripts are ignored and non-functional. is there a proxy library that handles all these ? it can be in any scripting language.

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  • Visual PHP GUI IDE

    - by Joshua
    Does anybody know of a reliable, well-made tool for creating standalone desktop applications complete with GUI, using just PHP, or primarily PHP? I enjoy the R.A.D. and many other aspects of PHP and would like to use it for some non server/client projects.

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  • SQL - Getting Most Recent Date From Multiple Columns

    - by ScottSEA
    Assume a rowset containing the following EntryID Name DateModified DateDeleted ----------------------------------------------- 1 Name1 1/2/2003 NULL 2 Name1 1/3/2005 1/5/2008 3 Name1 1/3/2006 NULL 4 Name1 NULL NULL 5 Name1 3/5/2008 NULL I need to return the largest (i.e. most recent) non-null date from DateModified and DateDeleted, in this case 3/5/2008.

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  • Simple check for SELECT query empty result

    - by den-javamaniac
    Hi. Can anyone point out how to check if a select query returns non empty result set? For example I have next query: SELECT * FROM service s WHERE s.service_id = ?; Should I do something like next: ISNULL(SELECT * FROM service s WHERE s.service_id = ?) to test if result set is not empty?

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  • Your favorite time-off between programming.

    - by Harsha
    I am sure all coding pundits here will have one (or multiple) ways of spending some time-off between hectic coding sessions just to relax. Would love to hear from you all as I am a newbie and want to take little breaks (non-physical) from coding and do things which actually help me focus again. Thanks.

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  • Select random line in SQL database

    - by Jensen
    Hi, I would like to select a random line in my database. I saw this solution on a website: SELECT column FROM table ORDER BY RAND() LIMIT 1 This SQL query run but someone said me that it was a non performant query. Is there another solution ? Thx

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  • Generate 3 random number that sum to 1 in R

    - by user1034797
    I am hoping to create 3 (non-negative) quasi-random numbers that sum to one, and repeat over and over. Basically I am trying to partition something into three random parts over many trials. While I am aware of a= runif(3,0,1) I was thinking that I could use 1-a as the max in the next run if, but it seems messy. But these of course don't sum to one. Any thoughts, oh wise stackoverflow-ers?

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  • nonparametric regression method using R

    - by user1782652
    I need to find the certain driver variables for unit sales & their impact on sales. My data is such data the error does not follow normal distribution & the unit sales is also not following any particular statistical distribution. Given such condition, it is difficult for me to use simple liner regression or GLM. Can any of you please suggest me some non parametric regression technique which I can use in R to model the relationship? Thanks,

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  • Static and default constuctor

    - by Ram
    A non static class can have static as well as default constructor at the same time. What is the difference between these two constructors? When shall I go for only static or static with default constructor?

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  • Frequent Functions: How to Structure?

    - by cam
    How should one structure their frequently used non-important functions (conversions, etc) in C# since everything must be contained in an object? Usually I take all these functions and put them in a static Utility class. Is this a good practice? How do most developers do it?

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  • setter injection guice + wicket

    - by chris-gr
    Hi, I have a Wicket Web Page where I create a new Object of class A: A a = new A(User u); In A I would like to have setter injection, however this is actually not done. I have heard that one must provide an empty constructor but how is it possible to have also a non - empty constructor with setter injection?

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  • Need a fast test to see if a remote printer is available or not. Using CreateIC now, and when print

    - by Steve
    My application does a CreateIC (and later, an OpenPrinter) for the user's default printer. When this is a remote printer, and that printer is powered down or otherwise not present on the network, it takes over 20 seconds for the CreateIC to return. I'm looking for some call I can make that will give me a quick answer if the server is down (so I can return a status and not try to do the CreateIC/OpenPrinter). My environment is c/c++ (non-managed).

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  • is this class thread safe?

    - by flash
    consider this class,with no instance variables and only methods which are non-synchronous can we infer from this info that this class in Thread-safe? public class test{ public void test1{ // do something } public void test2{ // do something } public void test3{ // do something } }

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  • Making many network shares appear as one

    - by jimbojw
    Givens: disk is cheap, and there's plenty lying around on various computers around the corporate intranet redundant contiguous large storage volumes are expensive Problem: It would be fantastic to have a single entry point (drive letter, network path) that presents all this space as one contiguous filesystem, effectively abstracting the disk and network architecture from the paths presented to users. Does anyone know how to implement such a solution? I'm open to Windows and non-windows solutions, free and proprietary.

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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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