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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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• When to use reflection to convert datarow to an object

  - by Daniel McNulty

  I'm in a situation now were I need to convert a datarow I've fetched from a query into a new instance of an object. I can do the obvious looping through columns and 'manually' assign these to properties of the object - or I can look into reflection such as this: http://www.codeproject.com/Articles/11914/Using-Reflection-to-convert-DataRows-to-objects-or What would I base the decision on? Just scalability??

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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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• 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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• 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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• Stopping other subs from running while in a Sub

  - by Bigfatty

  Is there a way to stop other subs from running while in a separate sub. for instance say your in the sub CreateNumber() and the subs are setup like CreateNumber() AddNumber() DeleteNumber() Is there a way to be in CreateNumber() and call a function to stop AddNumber from running after creaetNumber() is finished? i just want my program to sit there to wait for an event to happen.

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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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• Returning the size of available virtual memory at run-time in C++

  - by Greenhouse Gases

  In C++ is there a predefined library function that will return the size of RAM currently available on a computer a program is being run on, at run-time? For instance, if an object is 4bytes, then can we divide the available virtual memory by 4 bytes to give an estimate of how many more objects could be stored by the program safely? I have used the sizeof() function to return the size of objects within my program. Thanks

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• If I'm running my App Engine app on localhost, will I not see a value for X-AppEngine-Country?

  - by Bartholomew

  According to the Release Notes: All user request have an X-AppEngine-Country header which contains the ISO-3166-1 alpha-2 country code for the user, based on the IP address of the client request. My app is running on localhost with the 1.5.1 Java release which contains the X-AppEngine-Country header but I don't seem to be receiving any value for this header in my requests. Do I have to deploy the app to a production instance to test this feature?

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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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• (Python) Why do I always have to type absolute paths in file functions?

  - by Ideka

  For instance, if I have: C:\42\main.py and C:\42\info.txt and I want to read info.txt from main.py, I have to input "C:\42\info.txt" instad of just "info.txt". Is it supposed to be like that? If not, how can I fix it?

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• What does your Objective-C singleton look like?

  - by schwa

  Mine is merely (or a close variant thereof): static MyClass *gInstance = NULL; + (MyClass *)instance { @synchronized(self) { if (gInstance == NULL) gInstance = [[self alloc] init]; } return(gInstance); }

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• How to use same view-state with different views in spring web flow

  - by Explorer

  Hey Guys, I am trying to find the way to use same view-state but with different views so that based on where it is being called, I can provide different view to the user. For instance, trying to achieve as follows: Please share your experience so that I can achieve this functionality easily.

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• C How to find the length of an integer

  - by marabunta2048

  Hello, I would like to know how I can find the length of an integer in C. For instance: 1 = 1 25 = 2 12512 = 5 etc. etc. How do I do this and is this even possible in C ?

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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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• How can I tell if a ManualResetEvent is signaled or non-signaled?

  - by jbraz

  I want to check to see if an instance of ManualResetEvent is signaled before starting a thread. How can I do this?

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• link_to_unless_current for subURLs in Rails

  - by Vitaly

  Hey, I'm looking for a way to use something similar to link_to_unless_current but for sub URLs, so for instance for both these URLs: /entity_name/ /entity_name/123 it will not result as a link. How can I achieve that in Rails?

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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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• Load variable only once in struts 1 Action class

  - by xain

  Hi, I have a structs action object instance that loads a variable from a properties file.I want it to happen only the first time the action is called, so in further executions its read from memory. Any hints ? Thanks.

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• Google App Engine query data store by a string start with ...

  - by Frank

  How to write a query that can find me all item_number start with a certain value ? For instance there are item_numbers like these : 123_abc 123_xyz ierireire 321_add 999_pop My current query looks like this : "select from "+PayPal_Message.class.getName()+" where item_number == '"+Item_Number+"' order by item_number desc" What's a query look like that can return all item_numbers start with "123_" ?

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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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• I need to programmatically remove a batch of unique constraints that I don't know the names of.

  - by Bill

  I maintain a product that is installed at multiple locations which as been haphazardly upgraded. Unique constraints were added to a number of tables, but I have no idea what the names are at any particular instance. What I do know is the table/columnname pair that has the unique constraints and I would like to write a script to delete any unique constraint on these column/table combinations. This is MSSQL 2000 and later. Something that works on 2000/2005/2008 would be best!

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• Is it standard behavior for this code to throw a NullPointerException?

  - by Eric

  I've had a big problem in some library code, which I've pinned down to a single statement: System.out.println((String) null); Ok, the code doesn't actually look like that, but it certainly calls println with a null argument. Doing this causes my whole applicaio to throw an unexpected NullPointerException. In general, should println throw this exception under that circumstance, or is this non-standard behavior due to a poor implementation of the out instance?

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• HTTP 403.9 - Access Forbidden: Too many users are connected

  - by sdsd

  hi I have created an application in VStudio. It ran nicely in debugging mode, but my computer became slower and slower as I worked until it finaly became frozen. after I manualy restarted it, the app wasn't running any more in debug and I get this execption in the browser. Only I am connected right now to the app. I have restarted the computer so there coudn't be any instance of a client connected I have removed and reinstalled the IIS what is wrong?

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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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