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• Live Wallpaper Engine Abstraction

  - by user1459142

  I am trying to obtain an instance of my live wallpaper engine in another class, here is my code... In the other class: WallpaperEngine wpe = (WallpaperEngine) LiveWallpaperService.onCreateEngine(); In LiveWallpaperService: @Override public Engine onCreateEngine() { // TODO Auto-generated method stub return new WallpaperEngine(); } But when I refer to an object in my engine (i.e, "wpe.variable"), I get a NullPointerException and the wallpaper force closes.

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• How do I override __getattr__ in Python without breaking the default behavior?

  - by sheats

  I want to override the getattr method on a class to do something fancy but I don't want to break the default behavior. What's the correct way to do this?

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• Should I reuse Points and Rectangles or create new ones?

  - by Newtang

  In a method that gets called frequently, like a painting event, is it more efficient to reuse Point and Rectangle Objects (for specifying locations and bounds), or should I create new ones.

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• $0 (Program Name) in Java? Discover main class?

  - by RyanTM

  Is there a way to find the name of the program that is running in Java? The class of the main method would be good enough.

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• startsWith using error in java

  - by user1838839

  defined variable: LinkedList list1=new LinkedList(); Object get() in list1 obtains a node of list1 Object remove() in list1 deletes a node of list1 count() is length of list1 for(int i=1;i<list1.count();i++){ if(list1.get(i).startsWith('"',0)) //Error here list1.remove(i); } Error: cannot find symbol symbol: method charAt(int) location: class Object how to fix this problem? I would like to delete the node in list1 which starts with (").

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• in PHP how do i use range() for creating timing list?

  - by I Like PHP

  i want to create a table where first column have timing in below style timing | user1 | user2 | user3 ------------------------------- 9 AM | | | 10 AM | | | . | | | . | | | . | | | 6 PM | | | 7 PM | | | is it possible to use range() for creating timing list, if yes then please tell me , or if not then suggest me better method. Thanks always

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• I am trying to parse a text file I loaded in Actionscript 3.0, help please

  - by Joe.F

  All I can find information on for the URLLoader object in Actionsript 3.0 involves loading XML files, which I don't want to do. I'm trying to load in a .txt file that I want to parse, line by line with each line being delimited by a comma. Anyone know a method of doing this or a place where I can find some information on how to do this? Thanks!

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• Check mysql_query results if DELETE query worked?

  - by Camran

  I have a DELETE query which deletes a record from a mysql db. is there any way to make sure if the delete was performed or not? I mean, for a query to FIND stuff you do $res=mysql_query($var); $nr=mysql_num_rows($res); and you get nr of rows returned. Is there any similiar method for deletion of records? Thanks

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• How to use __LINE__ in a string

  - by John

  Just using it as a method parameter is fine but what about an easy way to use it in strings? For instance say I have this: 11 void myTest() 12 { 13 if(!testCondition) 14 logError("testcondition failed"); 15 } And I want the output to be: "myTest line 14: testcondition failed" How can I write logError? Does it have to be some monstrosity of a macro?

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• Rails date format in form field

  - by Jack

  Hello I'd like my dates in the mm/dd/year format in text fields. However, they currently displays as 2010-03-26. Is there a global setting I can set to change this? I tried the following, which seems to update the .to_s method, but form fields stay the same. ActiveSupport::CoreExtensions::Date::Conversions::DATE_FORMATS.merge!(:default => '%m/%d/%Y') Thanks

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• Communicating Between .NET Programs

  - by IronManIngellis

  I wanted to set up a simple data communication between two C# applications, and I'm not sure what the best method is in doing so. I've previously used Java Sockets and ServerSockets to get the job done, but I'm new to C#, so I've come for advice :) It's going to be two way communication with two clients exchanging strings or something of the like.

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• c++ : looking away to implemnt this senario

  - by user63898

  Hi im looking to find how to implement this scenario: i have logic code that is inside function, now i like to be able to execute this function in a separate thread. now what i have is a raw implementation of this .. i simple Init the Thread that in its Start/Run method i keep the function logic . how can i make it more generic ? so i could send the function ( mybe function pointer ) to generic thread factory/pool ? in c++

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• Get minvalue of a Map(Key,Double)

  - by chris-gr

  Hi all, is there a method (maybe with Google Collections) to obtain the min value of a Map(Key, Double) In traditional way, I would have to sort the map according to the values, and take the first/last one. thanks

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• Algorithm to generate 1000 distinct integers in the range [0,8000]?

  - by The Last Ninja

  What are some alternative methods to generate 1000 distinct random integers in the range [0,8000] as opposed to the following: naive method: generating a number and checking if it's already in the array. O(n^2) linear shuffle: generate sequence 0 to 8000, shuffle, take the first 1000. O(n)

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• will be assumed to return id

  - by Andrew_E

  I import oourafft.h and oourafft.m class, but get strange error while ooura initialize. OouraFFT * myFFT = [OouraFFT initForSignalsOfLength:1024 numberOfWindows:10]; OouraFFT may not respond to +initForSignalsOfLength: numberOfWindows Messages without matching method signature will be assumed to return 'id' and accept argument - Warning I think that it some kind of error import .h file

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• building a hex value from integers

  - by StillLearningToCode

  i am trying to generate a hex color value from an integer input, and I'm not sure I'm using the concat method correctly. when i output the string theColor, i only get "0x", any ideas? public String generateColor(String redVal, String blueVal, String greenVal, String alphaVal){ String theColor = "0x"; theColor.concat(alphaVal); theColor.concat(redVal); theColor.concat(greenVal); theColor.concat(blueVal); return theColor; }

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• Java 1.7ea: Files.probeContentType(path) returns null

  - by Cybertizzen

  Hi, I'm having a bit of a strange problem with an application using the Files.probeContentType(path)-method to test for file type: On both my Ubuntu and Fedora systems, it works fine, but when moved to a RedHat Enterprise server (2.6.18-194.el5 #1 x86_64 x86_64 x86_64 GNU/Linux), it only returns null. I'm using java 7 early access (1.7.0-ea-b84). I have to use this version due to functionality that isn't included in 1.6. Does anyone have an idea of what might be the problem here?

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• php: avoiding __get in certain circumstances?

  - by user151841

  I have a class where I'm using __set. Because I don't want it to set just anything, I have an array of approved variables that it checks before it will actually set a class property. However, on construct, I want the __construct method to set several class properties, some of which are not in the approved list. So when construct happens, and I do $this->var = $value, I of course get my exception that I'm not allowed to set that variable. Can I get around this somehow?

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• jquery's every() doesn't work on Internet Explorer

  - by ripper234

  When I run the following javascript in IE, I get "Error: Object doesn't support this property or method" on "data.every(...)". It works in Chrome/Firefox.

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• How to add a UIView above the current UITableViewController

  - by user558096

  I'm have difficulty adding a subview UIView from within the viewDidLoad method of a UITableViewController This works: [self.view addSubview:self.progView]; But you can see the table cell lines bleed through the UIView progView. I've tried this approach: [self.view.superview insertSubview:self.progView aboveSubview:self.view]; Which is an attempt to add the progView UIView to the superview, above the current view. When I try this I get this the UIView never appears.

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• Does Java not support multiple inheritance?

  - by user1720616

  Lets us take instances of two classes public abstract class Shapes { public abstract void draw(Graphics g); } public class Rectangle extends Shapes { public void draw(Graphics g) { //implementation of the method } } here the class Rectangle has extended class Shapes and implicitly it extends class Object.I know no other extension is possible but cant we call inheriting classes Shapes and Object multiple inheritance?(Since inheriting two classes is multiple inheritance from one perspective)

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• when does java.util.zip.ZipFile.close() throw IOException?

  - by sk

  Under what circumstances would java.util.zip.ZipFile.close() throw an IOException? Its method signature indicates that it can be thrown, but from the source code there doesn't seem to be any place where this could happen, unless it's in native code. What corrective action, if any, could be taken at the point where that exception is caught?

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• Protecting from crashes (beyond bounds) with [object objectAtIndex:]

  - by Tom

  Hi! I'd like to know if there's a way to verify if an index exists before getting it. So it'd be way to protect my code against: *** Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[NSCFArray objectAtIndex:]: index (2) beyond bounds (0)' Like in PHP you can do: isset($object[10]); and it'll return true if it exists. Is there such a method in Objective-C/Cocoa? Thanks!

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• Timing issue with jQuery and $(document).ready()

  - by ripper234

  I have the following code block code when the document is ready: $(document).ready(function() { createDivs(); // creates some divs with class 'foo'; // iterate $(".foo").each(function(index) { alert(index + " - " + $(this).text()); }); } I find that the "iterate" part misses the divs I created in the createDivs() method entirely! Is there some timing issue I'm not aware of? Why doesn't jquery see the divs that were just created?

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• [Linq-To-Sql]How to return two values of different datatypes?

  - by Pandiya Chendur

  Here is my repository method which returns UserId , public IQueryable<int> getLoginStatus(string emailId, string password) { return (from r in taxidb.Registrations where (r.EmailId == emailId && r.Password == password) select r.UserId); } How to return UserName which is a string along with UserId... Any suggestion?

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