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  • Java Operator Precedence Comparison

    - by Andrew
    Does java have a built-in method to compare precedence of two operators? For example, if I have a char '/' and a char '+' is there a method I can call that compares the two and returns true/false if the first is greater than the second (e.g. true)?

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  • MonoRail - How to grab records where a column isn't null

    - by Justin
    Hey, In MonoRail/Active Record if I want to grab all records that have a certain column equal to null, I can do: public static Category[] AllParentCategories() { return (FindAllByProperty("Parent.Id", null)); } However, what if I want to grab all records where that column doesn't equal null? I can't figure out how to do that using this FindAllByProperty method, is there another method that is more flexible or a way to grab records using a linq-like querying language? Thanks, Justin

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  • [Symfony 1.2: ckWebServicePlugin 3.0.0] Module name in SOAP requests, how to get rid of them?

    - by Henri
    When I generate a WSDL file with ./symfony webservice:generate-wsdl (where is 'frontend', is 'soap' and is 'http://localhost ') I get a nice soap.wsdl file which works like it should. Except, the methods are not named 'justAMethod' but 'soapService_justAMethod' (where soapService is the module which holds the SOAP methods). How do I omit the module name in the SOAP method names? I know this is possible since the previous release of the software had no module name in the SOAP method names.

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  • Java Graphics on java, 2d array board game.

    - by FILIaS
    I wanna fix a 2D board for a game. I've already fixed other panels for the gui and everything goes well. But the panel for the board cant be printed on the window. I'm a bit confused about it as i think i've followed the same ideas as for the others panels i need. Here's what i've done: /** *Method used to construct the square in the area of the *gui's grid. In this stage a GUISquare array is being constructed, * used in the whole game as *a mean of changing a square graphical state. *@param squares is the squares array from whom the gui grid will be *constructed. *@see getSquare about the correspondance beetween a squareModel and * a GUISquare. */ private void initBoardPanel(SquareModel[][] squares){ BoardPanel.setLayout(new GridLayout(myGame.getHeight(),myGame.getWidth())); //set layout Squares=new GUISquare[myGame.getHeight()][myGame.getWidth()]; grid=new JPanel[myGame.getHeight()][myGame.getWidth()]; for (int i=0; i< myGame.getHeight(); i++){ for (int j=0; j<myGame.getWidth() ; j++){ grid[i][j] = new JPanel( ); GUISquare kout=new GUISquare(i,j); kout.setSquare(myGame.getSquares()[i][j]); kout.draw(myGame.getSquares()[i][j].getGoTo(),myGame.getSquares()[i][j].getNumber()); /*draw method is been called. the first parameter is the number of the square that the player will be moved to if lands in this one square,the second parameter is just the number of the square */ kout.setVisible(true); grid[i][j].add(kout); grid[i][j].setVisible(true); BoardPanel.add(grid[i][j]); BoardPanel.setVisible(true); BoardPanel.setBackground(Color.WHITE); GUISquare temp=this.getSquare(squares[i][i]); Squares[i][j]= temp; } } this.add(BoardPanel,BorderLayout.WEST); // this.pack(); //sets appropriate size for frame this.setVisible(true); //makes frame visible } /** * Transformer for Rand/Move * <br>This method is used to display a square on the screen. */ public void draw(int goTo ,int number) { JPanel panel = new JPanel(); JLabel label1 = new JLabel(""+"Move To"+goTo); JLabel label2 = new JLabel(""+number); JSeparator CellSeparator = new JSeparator(orientation); panel.add(CellSeparator); panel.setLayout(new BorderLayout()); panel.add(label1, BorderLayout.CENTER); panel.add(label2, BorderLayout.LINE_START); } I've posted only one draw method...but all versions are alike.

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  • How to unit test business rules?

    - by Robert Lamb
    I need a unit test to make sure I am accumulating vacation hours properly. But vacation hours accumulate according to a business rule, if the rule changes, then the unit test breaks. Is this acceptable? Should I expose the rule through a method and then call that method from both my code and my test to ensure that the unit test isn't so fragile? My question is: What is the right way to unit test business rules that may change?

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  • finding "distance" between two pixel's colors.

    - by igor
    Once more something relatively simple, but confused as to what they want. the method to find distance on cartesian coordinate system is distance=sqrt[(x2-x1)^2 + (y2-y1)^2] but how do i apply it here? //Requires: testColor to be a valid Color //Effects: returns the "distance" between the current Pixel's color and // the passed color // uses the standard method to calculate "distance" // uses the same formula as finding distance on a // Cartesian coordinate system double colorDistance(Color testColor) const;

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  • Is there a way to prevent UIImagePickerController change statusbar style?

    - by Eonil
    UIImagePickerController changes statusbar style to black/opaque. I want to keep status-bar style black/translucent. I'm finding a way to prevent status bar style changing. Or making it transited smoothly. Now, presenting UIImagePickerController changes status-bar style instantly, even -[presentModalViewController:picker animated:YES] specified. Any method, welcome, including hacking or private method. This is an app for AppStore, however I want to even try.

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  • What would be the good name for this operation?

    - by Rogach
    I see that Scala standard library misses the method to get ranges of objects in the collection, that satisfy the predicate: def <???>(p: A => Boolean): List[List[A]] = { val buf = collection.mutable.ListBuffer[List[A]]() var elems = this.dropWhile(e => !p(e)) while (elems.nonEmpty) { buf += elems.takeWhile(p) elems = elems.dropWhile(e => !p(e)) } buf.toList } What would be the good name for such method? And is my implementation good enough?

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  • Get Object ID of UI element from code.

    - by andoriyu.mp
    I'm trying link 40 buttons to one event handler method and then do the processing work from one method instead of 40. I know how to link it but once I get there I don't know how to distinguish what button was pressed. Does anyone know how to reference the button object sender id or is there another way to solve this problem? Any help would be greatly appreciated.

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  • Good style for handling constructor failure of critical object

    - by mtlphil
    I'm trying to decide between two ways of instantiating an object & handling any constructor exceptions for an object that is critical to my program, i.e. if construction fails the program can't continue. I have a class SimpleMIDIOut that wraps basic Win32 MIDI functions. It will open a MIDI device in the constructor and close it in the destructor. It will throw an exception inherited from std::exception in the constructor if the MIDI device cannot be opened. Which of the following ways of catching constructor exceptions for this object would be more in line with C++ best practices Method 1 - Stack allocated object, only in scope inside try block #include <iostream> #include "simplemidiout.h" int main() { try { SimpleMIDIOut myOut; //constructor will throw if MIDI device cannot be opened myOut.PlayNote(60,100); //..... //myOut goes out of scope outside this block //so basically the whole program has to be inside //this block. //On the plus side, it's on the stack so //destructor that handles object cleanup //is called automatically, more inline with RAII idiom? } catch(const std::exception& e) { std::cout << e.what() << std::endl; std::cin.ignore(); return 1; } std::cin.ignore(); return 0; } Method 2 - Pointer to object, heap allocated, nicer structured code? #include <iostream> #include "simplemidiout.h" int main() { SimpleMIDIOut *myOut; try { myOut = new SimpleMIDIOut(); } catch(const std::exception& e) { std::cout << e.what() << std::endl; delete myOut; return 1; } myOut->PlayNote(60,100); std::cin.ignore(); delete myOut; return 0; } I like the look of the code in Method 2 better, don't have to jam my whole program into a try block, but Method 1 creates the object on the stack so C++ manages the object's life time, which is more in tune with RAII philosophy isn't it? I'm still a novice at this so any feedback on the above is much appreciated. If there's an even better way to check for/handle constructor failure in a siatuation like this please let me know.

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  • Calling Java from Python

    - by roddik
    Hello. I have a Java app that takes pretty much time to be initialized (so I can't use command-line like interface) and I need to pass text and receive the output of a Java method from Python. Is it possible to load the Java application, have it opened all the time the Python script runs and use a method from that app?

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  • Recursion Question : Revision

    - by stan
    My slides say that: A recursive call should always be on a smaller data structure than the current one There must be a non recursive option if the data structure is too small You need a wrapper method to make the recursive method accessible Just reading this from the slides makes no sense, especially seeing as it was a topic from before christmas! Could anyone try and clear up what it means please? Thank you

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  • "state is undetermined" when starting Grails app on CloudFoundry

    - by SeattleStephens
    I have a Grails app that has been running on CloudFoundry for months. I updated the app from Grails 2.0.4 to 2.1.0 and also updated a few plugins I have been using. Now when I push the app to CloudFoundry and do the start, I receive the error: 'appname' state is undetermined, not enough information available. The tomcat Catalina log shows the NoClassDefFoundError below. I've read about issues with the Ivy cache but have not looked into that yet. I have updated vmc to the latest version (0.3.18). SEVERE: Error deploying web application directory ROOT java.lang.NoClassDefFoundError: org/apache/tomcat/PeriodicEventListener at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632) at java.lang.ClassLoader.defineClass(ClassLoader.java:616) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:2818) at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:1159) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1647) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1128) at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1026) at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4421) at org.apache.catalina.core.StandardContext.start(StandardContext.java:4734) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:799) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:779) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:601) at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1079) at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:1002) at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:506) at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1317) at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:324) at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:142) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1065) at org.apache.catalina.core.StandardHost.start(StandardHost.java:840) at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1057) at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:463) at org.apache.catalina.core.StandardService.start(StandardService.java:525) at org.apache.catalina.core.StandardServer.start(StandardServer.java:754) at org.apache.catalina.startup.Catalina.start(Catalina.java:595) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:289) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414) Caused by: java.lang.ClassNotFoundException: org.apache.tomcat.PeriodicEventListener at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680) at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526) ... 34 more

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  • BeginUpdate equivalent in WPF?

    - by Lith
    My problem is that I need to add a lot of items to a ListBox in WPF. In WinForms you'd just use the BeginUpdate(); method, add everything, and finally use the EndUpdate(); method. So, how would I stop the drawing in a WPF listbox until every item is added and then draw everything in one go?

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  • Rails: Accessing /lib Modules from Controller

    - by Dex
    I have a Module called /lib/string_parser.rb. It looks like: module StringParser def wrap_lines(input, chars) ... end #make available to views def self.included(base) base.send :helper_method, :my_method_for_views if base.respond_to? :helper_method end end I'm trying to call wrap_lines from the create method of my controller but no matter what I do, I keep getting NoMethodErrors for an undefined method.

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  • How to delete multiple rows from datatable in VB.net 2008 ?

    - by KuldipMCA
    How to delete multiple rows from datatable in VB.net 2008 with out looping ? I do not want to delete from database. I want to delete from Local data table. I know the Select Method and also Remove and Remove at method too. but that needs looping to delete the ROWs from Datatable. I have 40000 Rows and i want to Delete selected 1000 Rows from that Datatable.

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  • Dump UIImage on iPhone

    - by Leon
    I wonder how to save the UIImage object from UIImagePickerController into the App Document directory. I tried to use UIImageJPEGRepresentation() method and UIImagePNGRepresentation(), but it seemed the image data was changed. Is there any method to keep the original image content without any compression?

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  • while uploading image I get errors in logcat

    - by al0ne evenings
    I am uploading image and also sending some parameters with it. I am getting errors in my logcat while doing so. Here is my code public class Camera extends Activity { ImageView ivUserImage; Button bUpload; Intent i; int CameraResult = 0; Bitmap bmp; public String globalUID; UserFunctions userFunctions; String photoName; InputStream is; int serverResponseCode = 0; ProgressDialog dialog = null; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.camera); userFunctions = new UserFunctions(); globalUID = getIntent().getExtras().getString("globalUID"); Toast.makeText(getApplicationContext(), globalUID, Toast.LENGTH_LONG).show(); ivUserImage = (ImageView)findViewById(R.id.ivUserImage); bUpload = (Button)findViewById(R.id.bUpload); openCamera(); } private void openCamera() { i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE); startActivityForResult(i, CameraResult); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if(resultCode == RESULT_OK) { //set image taken from camera on ImageView Bundle extras = data.getExtras(); bmp = (Bitmap) extras.get("data"); ivUserImage.setImageBitmap(bmp); //Create new Cursor to obtain the file Path for the large image String[] largeFileProjection = { MediaStore.Images.ImageColumns._ID, MediaStore.Images.ImageColumns.DATA }; String largeFileSort = MediaStore.Images.ImageColumns._ID + " DESC"; //final String photoName = MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME; Cursor myCursor = this.managedQuery(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, largeFileProjection, null, null, largeFileSort); try { myCursor.moveToFirst(); //This will actually give you the file path location of the image. final String largeImagePath = myCursor.getString(myCursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.DATA)); //final String photoName = myCursor.getString(myCursor.getColumnIndexOrThrow(MediaStore.Images.ImageColumns.BUCKET_DISPLAY_NAME)); //Log.e("URI", largeImagePath); File f = new File("" + largeImagePath); photoName = f.getName(); bUpload.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { dialog = ProgressDialog.show(Camera.this, "", "Uploading file...", true); new Thread(new Runnable() { public void run() { runOnUiThread(new Runnable() { public void run() { //tv.setText("uploading started....."); Toast.makeText(getBaseContext(), "File is uploading...", Toast.LENGTH_LONG).show(); } }); if(imageUpload(globalUID, largeImagePath)) { Toast.makeText(getApplicationContext(), "Image uploaded", Toast.LENGTH_LONG).show(); } else { Toast.makeText(getApplicationContext(), "Error uploading image", Toast.LENGTH_LONG).show(); } //Log.e("Response: ", response); //System.out.println("RES : " + response); } }).start(); } }); } finally { myCursor.close(); } //Uri uriLargeImage = Uri.withAppendedPath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, String.valueOf(imageId)); //String imageUrl = getRealPathFromURI(uriLargeImage); } } public boolean imageUpload(String uid, String imagepath) { boolean success = false; //Bitmap bitmapOrg = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher); Bitmap bitmapOrg = BitmapFactory.decodeFile(imagepath); ByteArrayOutputStream bao = new ByteArrayOutputStream(); bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 90, bao); byte [] ba = bao.toByteArray(); String ba1=Base64.encodeToString(ba, 0); ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); nameValuePairs.add(new BasicNameValuePair("image",ba1)); nameValuePairs.add(new BasicNameValuePair("uid", uid)); try { HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://www.example.info/androidfileupload/index.php"); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpclient.execute(httppost); HttpEntity entity = response.getEntity(); if(response != null) { success = true; } is = entity.getContent(); } catch(Exception e) { Log.e("log_tag", "Error in http connection "+e.toString()); } dialog.dismiss(); return success; } Here is my logcat 06-23 11:54:48.555: E/AndroidRuntime(30601): FATAL EXCEPTION: Thread-11 06-23 11:54:48.555: E/AndroidRuntime(30601): java.lang.OutOfMemoryError 06-23 11:54:48.555: E/AndroidRuntime(30601): at java.lang.String.<init>(String.java:513) 06-23 11:54:48.555: E/AndroidRuntime(30601): at java.lang.AbstractStringBuilder.toString(AbstractStringBuilder.java:650) 06-23 11:54:48.555: E/AndroidRuntime(30601): at java.lang.StringBuilder.toString(StringBuilder.java:664) 06-23 11:54:48.555: E/AndroidRuntime(30601): at org.apache.http.client.utils.URLEncodedUtils.format(URLEncodedUtils.java:170) 06-23 11:54:48.555: E/AndroidRuntime(30601): at org.apache.http.client.entity.UrlEncodedFormEntity.<init>(UrlEncodedFormEntity.java:71) 06-23 11:54:48.555: E/AndroidRuntime(30601): at com.zafar.login.Camera.imageUpload(Camera.java:155) 06-23 11:54:48.555: E/AndroidRuntime(30601): at com.zafar.login.Camera$1$1.run(Camera.java:119) 06-23 11:54:48.555: E/AndroidRuntime(30601): at java.lang.Thread.run(Thread.java:1019) 06-23 11:54:53.960: E/WindowManager(30601): Activity com.zafar.login.DashboardActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@405db540 that was originally added here 06-23 11:54:53.960: E/WindowManager(30601): android.view.WindowLeaked: Activity com.zafar.login.DashboardActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@405db540 that was originally added here 06-23 11:54:53.960: E/WindowManager(30601): at android.view.ViewRoot.<init>(ViewRoot.java:266) 06-23 11:54:53.960: E/WindowManager(30601): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:174) 06-23 11:54:53.960: E/WindowManager(30601): at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:117) 06-23 11:54:53.960: E/WindowManager(30601): at android.view.Window$LocalWindowManager.addView(Window.java:424) 06-23 11:54:53.960: E/WindowManager(30601): at android.app.Dialog.show(Dialog.java:241) 06-23 11:54:53.960: E/WindowManager(30601): at android.app.ProgressDialog.show(ProgressDialog.java:107) 06-23 11:54:53.960: E/WindowManager(30601): at android.app.ProgressDialog.show(ProgressDialog.java:90) 06-23 11:54:53.960: E/WindowManager(30601): at com.zafar.login.Camera$1.onClick(Camera.java:110) 06-23 11:54:53.960: E/WindowManager(30601): at android.view.View.performClick(View.java:2538) 06-23 11:54:53.960: E/WindowManager(30601): at android.view.View$PerformClick.run(View.java:9152) 06-23 11:54:53.960: E/WindowManager(30601): at android.os.Handler.handleCallback(Handler.java:587) 06-23 11:54:53.960: E/WindowManager(30601): at android.os.Handler.dispatchMessage(Handler.java:92) 06-23 11:54:53.960: E/WindowManager(30601): at android.os.Looper.loop(Looper.java:130) 06-23 11:54:53.960: E/WindowManager(30601): at android.app.ActivityThread.main(ActivityThread.java:3691) 06-23 11:54:53.960: E/WindowManager(30601): at java.lang.reflect.Method.invokeNative(Native Method) 06-23 11:54:53.960: E/WindowManager(30601): at java.lang.reflect.Method.invoke(Method.java:507) 06-23 11:54:53.960: E/WindowManager(30601): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:907) 06-23 11:54:53.960: E/WindowManager(30601): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 06-23 11:54:53.960: E/WindowManager(30601): at dalvik.system.NativeStart.main(Native Method) 06-23 11:54:55.190: I/Process(30601): Sending signal. PID: 30601 SIG: 9

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