To switch between perspectives.

 - Windows: &lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;F8&lt;/kbd&gt;

 - Mac: &lt;kbd&gt;cmd&lt;/kbd&gt;+&lt;kbd&gt;F8&lt;/kbd&gt;

You can specify hotkeys for specific perspectives in Window-&gt;Preferences:

[![enter image description here][1]][1]
&amp;nbsp;

You can export these to file using &#39;Export CSV...&#39;, here are mine if interested -

 - http://justinreina.com/misc/17_06_26_eclipse/jmr_hotkeys.csv
  
[1]: https://i.stack.imgur.com/MA4Ew.png

Ubuntu: &lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;F8&lt;/kbd&gt; same as windows

Command-F8 lets you change perspectives in Eclipse for Mac.

Eclipse allows you to change the perspective easily. `Ctrl + F8` still switches between default/regular and most recent perspective. The toolbar shortcut is available too.
[Toolbar shortcut Image][1]

  [1]: https://i.stack.imgur.com/e0MHE.jpg


I have read a lot of topics about code refactoring and avoiding of if else statements. Actually, I have a class where I am using a lot of if - else conditions.

More details: I am using the pull parser and on each line of my soap response, I will check if there is a tag I am interested on, if not, check another tag etc:

     if(eventType == XmlPullParser.START_TAG) {
        		soapResponse= xpp.getName().toString();
        		
        		if (soapResponse.equals(&quot;EditorialOffice&quot;)){  
        			eventType = xpp.next();
        			if (xpp.getText()!=null){
        			editorialOffice += xpp.getText();
        			}
        		}	
        		else if (soapResponse.equals(&quot;EditorialBoard&quot;)){  
        			eventType = xpp.next();
        			if (xpp.getText()!=null){
        			editorialBoard += xpp.getText();
        			}
        		}
        		else if (soapResponse.equals(&quot;AdvisoryBoard&quot;)){  
        			eventType = xpp.next();
        			if (xpp.getText()!=null){
        			advisoryBoard += xpp.getText();
        			}
        		}	
        	}
        	eventType = xpp.next();
         }

Now, I would like to use something else, instead of those if else conditions, but I don&#39;t know what.

Can you please give me an example?

How to avoid a lot of if else conditions

i&#180;m very new to xcode... a made an app (simple calculator) work&#180;s pretty good (on simulator and device). 
When i set the main interface in the **summary** options from **Target**, i get the following error when starting the simulator:

&gt; 2012-04-14 12:17:27.123 CalcTest[27550:f803] *** Terminating app due
&gt; to uncaught exception &#39;NSUnknownKeyException&#39;, 

&gt; reason:
&gt; &#39;`[&lt;UIApplication 0x6a14650&gt; setValue:forUndefinedKey:]`: this class is
&gt; not key value coding-compliant for the key calculatorScreen.&#39;
&gt; 
&gt; *** First throw call stack: (0x12db022 0x18f8cd6 0x12daee1 0xcc2022 0xc33f6b 0xc33edb 0xc4ed50 0x53671a 0x12dcdea 0x12467f1 0x53526e
&gt; 0x536eb7 0x313ce1 0x313ff8 0x31317f 0x322183 0x322c38 0x316634
&gt; 0x27fcef5 0x12af195 0x1213ff2 0x12128da 0x1211d84 0x1211c9b 0x312c65
&gt; 0x314626 0x1bad 0x1b15 0x1) terminate called throwing an
&gt; exception(lldb)

 

to find the problem, i started a new view based project. 

Run the empty new project on the simulator --&gt;works, 

But when I set the main interface, to ViewController, in the **summary** --&gt;the Simulator crash with

&gt; 2012-04-14 12:11:17.492 crash[27494:f803] *** Terminating app due to uncaught 
&gt; exception &#39;NSUnknownKeyException&#39;, reason:
&gt;
&gt; &#39;`[&lt;UIApplication 0x6a6f4b0&gt; setValue:forUndefinedKey:]`: this class is
&gt; not key value coding-compliant for the key view.&#39;
&gt;     *** First throw call stack:
&gt; 
&gt; (0x13c7022 0x1558cd6 0x13c6ee1 0x9bf022 0x930f6b 0x930edb 0x94bd50
&gt; 0x23371a 0x13c8dea 0x13327f1 0x23226e 0x233eb7 0x10ce1 0x10ff8 0x1017f
&gt; 0x1f183 0x1fc38 0x13634 0x12b1ef5 0x139b195 0x12ffff2 0x12fe8da
&gt; 0x12fdd84 0x12fdc9b 0xfc65 0x11626 0x1d4d 0x1cb5) terminate called
&gt; throwing an exception

is there a solution for the problem?



this class is not key value coding-compliant for the key view

I have PyDev, Java, and CDT installed on my Eclipse, and sometimes I need to switch between different perspectives; **Debug** to **Pydev**, for example. Does Eclipse have a shortcut to switch between them?

what&#39;s the shortcut of switching between different perspectives in eclipse

I have PyDev, Java, and CDT installed on my Eclipse, and sometimes I need to switch between different perspectives; Debug to Pydev, for example. Does Eclipse have a shortcut to switch between them?

Every time I try to open Eclipse in Ubuntu 12.04 I get an Unsatisfied Link Error and it will not open. I have recently installed the java JDK and Android SDK, could this be the problem? I followed [this tutorial][1].

Here is the log info:

    !SESSION 2012-04-15 21:05:46.902 -----------------------------------------------
    eclipse.buildId=I20110613-1736
    java.version=1.7.0
    java.vendor=Oracle Corporation
    BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_GB
    Command-line arguments:  -os linux -ws gtk -arch x86_64
    
    !ENTRY org.eclipse.osgi 4 0 2012-04-15 21:05:47.885
    !MESSAGE Application error
    !STACK 1
    java.lang.UnsatisfiedLinkError: Could not load SWT library. Reasons: 
	no swt-gtk-3740 in java.library.path
	no swt-gtk in java.library.path
	Can&#39;t load library: /home/tom/.swt/lib/linux/x86_64/libswt-gtk-3740.so
	Can&#39;t load library: /home/tom/.swt/lib/linux/x86_64/libswt-gtk.so

	at org.eclipse.swt.internal.Library.loadLibrary(Library.java:285)
	at org.eclipse.swt.internal.Library.loadLibrary(Library.java:194)
	at org.eclipse.swt.internal.C.&lt;clinit&gt;(C.java:21)
	at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:63)
	at org.eclipse.swt.internal.Converter.wcsToMbcs(Converter.java:54)
	at org.eclipse.swt.widgets.Display.&lt;clinit&gt;(Display.java:132)
	at org.eclipse.ui.internal.Workbench.createDisplay(Workbench.java:695)
	at org.eclipse.ui.PlatformUI.createDisplay(PlatformUI.java:161)
	at org.eclipse.ui.internal.ide.application.IDEApplication.createDisplay(IDEApplication.java:153)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:95)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:601)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1410)
	at org.eclipse.equinox.launcher.Main.main(Main.java:1386)

I have tried uninstalling and reinstalling, and removing the `~/.eclipse` directory but it still doesn&#39;t work


  [1]: http://forums.team-nocturnal.com/showthread.php/772

Eclipse cannot load SWT libraries

I&#39;m importing a multiple-module Maven project from the root directory on a shared drive on another server A. On server A, `mvn install` will run successfully, and Maven is set up properly with `repository/` and `settings.xml` in `/home/user/.m2`.

However, after I imported the project into Eclipse (STS actually) on my workstation PC, I can&#39;t get `mvn build` (I have the m2e plugin installed) to run, mostly due to missing dependencies from other modules. I realized that Eclipse is using `settings.xml` and `repository/` on my workstation PC, so there won&#39;t be any module build installed in the .m2 cache.

I&#39;m trying to modify Maven to use the .m2 directory on server A. I can only set settings.xml to the one on server A, but I cannot change the local repository. The only option I have is to &quot;re-index&quot;.

Is there a way to change the local repository to the one on server A, or is there a better way to have code on one server, and edit/build/test on Tomcat on another PC?

![enter image description here][1]


  [1]: http://i.stack.imgur.com/HbJwo.png

How to change Maven local repository in eclipse

I tried using the `Toggle mark occurrences (Alt + Shift + O)` button and also in `Preferences -&gt; General -&gt; Editors -&gt; Text Editor -&gt; Annotations` and setting the C/C++ Occurrences and C/C++ Write occurrences. But still when I select a word it won&#39;t highlight all occurrences of that specific word.

What I am using is Eclipse Indigo Service Release 2 in XP, with a C++ project.

Cannot highlight all occurrences of a selected word in Eclipse

I&#39;m using the following configuration :

 - Eclipse Indigo
 - Maven 2
 - ClearCase (like SVN and CVS)

and every time I want to run an application within eclipse a popup appears telling me that a *Problem has occured : File not found : ...\target\classes\META-INF\MANIFEST.MF*.


file not found manifest.mf eclipse

I download [eclipse for c++][1] (cdt-master-8.0.2.zip).

When I write:

    #include &lt;iostream&gt;

It marks:

    Unresolved inclusion: &lt;iostream&gt;

How can I fix it?

  [1]: http://www.eclipse.org/cdt/downloads.php

How to solve &quot;Unresolved inclusion: &lt;iostream&gt;&quot; in a C++ file in Eclipse CDT?

I just started out with Google Chrome extensions and I can&#39;t seem to log to console from my background js. When an error occurs (because of a syntax error, for example), I can&#39;t find any error messages either.

My manifest file:

    {
      &quot;name&quot;: &quot;My First Extension&quot;,
      &quot;version&quot;: &quot;1.0&quot;,
      &quot;manifest_version&quot;: 2,
      &quot;description&quot;: &quot;The first extension that I made.&quot;,
      &quot;browser_action&quot;: {
        &quot;default_icon&quot;: &quot;icon.png&quot;
      },
      &quot;background&quot;: {
        &quot;scripts&quot;: [&quot;background.js&quot;]
      },
      &quot;permissions&quot;: [
        &quot;pageCapture&quot;,
        &quot;tabs&quot;
      ]
    }


background.js:

    alert(&quot;here&quot;);
    console.log(&quot;Hello, world!&quot;)

When I load the extension, the alert comes up but I don&#39;t see anything being logged to console. What am I doing wrong?

Accessing console and devtools of extension&#39;s background.js

I have the following python code:

    values = set([1, 2, 3, 4, 5])
    import pdb
    pdb.set_trace()

I run the script and I am in the debugging shell:

    (pdb) list(values)
    *** Error in argument: &#39;(values)&#39;
    (Pdb)

How can I call `list(values)` in the debugger without invoking the debugger&#39;s own `list` command?


How do I call the Python&#39;s list while debugging?

I am currently writing a C program that requires frequent comparisons of string lengths so I wrote the following helper function:

    int strlonger(char *s1, char *s2) {
        return strlen(s1) - strlen(s2) &gt; 0;
    }

I have noticed that the function returns true even when `s1` has shorter length than `s2`. Can someone please explain this strange behavior?

&quot;strlen(s1) - strlen(s2)&quot; is never less than zero

When compiling C source code with either gcc or Clang, I always use the `-g` flag to generate debugging information for gdb.

`gcc -g -o helloworld helloworld.c`

I noticed that some people recommend `-g3` instead. What is the difference between the `-g` and `-g3` flags? Also is there a difference between `-g` and `-ggdb`?

GCC -g vs -g3 GDB Flag: What is the Difference?

**My problem**:

I ran upon an awkward problem as I was developing my application. As mentioned in the title, every time I install my application (in run mode, not debug!) at start-up the *waiting for debugger to connect..* message appears for 1-2-3 seconds, and the application starts.

**What I want**:

What I would like is to be able to start the application without that message appearing (it only started appearing in the last few days, and I can&#39;t remember changing anything related to debugging).

**What I&#39;ve tried**:

 - I have tried setting the `android:debuggable=&quot;false&quot;` but if I do this the debugger never attaches and the message never disappears.
 - I have also tried after installing to disable `USB Debugging`, but still no results.
 - Even if I kill the application and wake it up through an external source (it uses Google&#39;s C2D Messaging Framework) it still tries to run in debug mode on wake-up.

I have developed several Android applications and never stumbled upon this. Why wouldn&#39;t I be able to start the application in RUN mode? Is there any other way to install the application on the device, without hitting the run button in Eclipse?

I can post code-snippets from the AndroidManifest or from other parts of the code if necessary, but as I already mentioned I wasn&#39;t getting this kind of weird behavior several days ago.
 

&quot;Waiting for debugger to attach&quot; showing even when not running in debug mode

I have to make a backup of the program running from the file [*.appref-ms][1]&lt;br&gt;
When I opened the file [GitHub.appref-ms][1] using a text editor I found
&gt; http://github-windows.s3.amazonaws.com/GitHub.application#GitHub.application, Culture=neutral, PublicKeyToken=8f45a2159c87c850, processorArchitecture=x86 &lt;br&gt;


Where is the target stored on the local disk?&lt;br&gt; 
Editing the **PublicKeyToken** resulted in Default or Null Icon.&lt;br&gt;
Editing the **URL** resulted in &quot;Application Cannot Start&quot;.&lt;br&gt;
How is *.appref-ms targeting the Exe?&lt;br&gt; 
[This doesn&#39;t answer my Question][2]

Note: I tried opening the file offline, it still works perfectly.


  [1]: http://dl.dropbox.com/u/40690073/GitHub.appref-ms
  [2]: https://stackoverflow.com/a/281232/1008278

How to find the Target *.exe file of *.appref-ms

How do I create a shortcut on the desktop from a wix setup project?


Create shortcut to desktop using WiX

Is there a keyboard shortcut to select all the line your cursor is currently on? In Eclipse? Or even in general on Windows/Linux?

A shortcut to select a line in Eclipse?

Is there a way to close all tabs in one go in Sublime Text, but leave the window with the current project open? It is really annoying when I just want to close all open file and start the new task I have to `Cmd-W` them one by one. If I do `Cmd-Opt-W` it will close all tabs and the current project.

Close all tabs, but not the window, in Sublime Text

This sounds like it should be so simple... I must be dumb.

All I want is to make a windows short-cut that opens Powershell into a specific directory:

I&#39;m using the target:

    %SystemRoot%\system32\WindowsPowerShell\v1.0\powershell.exe 
        -noexit -command {cd c:/path/to/open}

Put it just spits out the command as text.

Open Powershell in a specific directory from shortcut

I&#39;m trying to implement a cropping &amp;  perspective correction feature into an upcoming app. Whilst doing research, I came across:

https://stackoverflow.com/questions/7838487/executing-cvwarpperspective-for-a-fake-deskewing-on-a-set-of-cvpoint

http://sudokugrab.blogspot.ch/2009/07/how-does-it-all-work.html

So I decided to try implementing this feature with OpenCV - the framework is there so the installation was fast. However, I&#39;m not getting the results I hoped for: (2nd picture is the result)

![Original Photo &amp; cropping box][1]

![Cropped Photo, bad result][2]

  [1]: http://i.stack.imgur.com/EnT2x.png
  [2]: http://i.stack.imgur.com/qINxd.png

I&#39;ve translated all the code to work with Xcode and triple checked the Coordinates. Can you tell me what is wrong with my code? For the sake of completeness, I&#39;ve also included the UIImage -&gt; Mat conversion + reversal:


    - (void)confirmedImage
    {
        if ([_adjustRect frameEdited]) {
        
        cv::Mat src = [self cvMatFromUIImage:_sourceImage];
        
        // My original Coordinates
        // 4-------3
        // |       |
        // |       |
        // |       |
        // 1-------2
        
        CGFloat scaleFactor =  [_sourceImageView contentScale];
        CGPoint p1 = [_adjustRect coordinatesForPoint:4 withScaleFactor:scaleFactor];
        CGPoint p2 = [_adjustRect coordinatesForPoint:3 withScaleFactor:scaleFactor];
        CGPoint p3 = [_adjustRect coordinatesForPoint:1 withScaleFactor:scaleFactor];
        CGPoint p4 = [_adjustRect coordinatesForPoint:2 withScaleFactor:scaleFactor];
        
        std::vector&lt;cv::Point2f&gt; c1;
        c1.push_back(cv::Point2f(p1.x, p1.y));
        c1.push_back(cv::Point2f(p2.x, p2.y));
        c1.push_back(cv::Point2f(p3.x, p3.y));
        c1.push_back(cv::Point2f(p4.x, p4.y));
        
        cv::RotatedRect box = minAreaRect(cv::Mat(c1));
        cv::Point2f pts[4];
        box.points(pts);
        
        cv::Point2f src_vertices[3];
        src_vertices[0] = pts[0];
        src_vertices[1] = pts[1];
        src_vertices[2] = pts[3];
        
        cv::Point2f dst_vertices[4];
        dst_vertices[0].x = 0;
        dst_vertices[0].y = 0;
        
        dst_vertices[1].x = box.boundingRect().width-1;
        dst_vertices[1].y = 0;
        
        dst_vertices[2].x = 0;
        dst_vertices[2].y = box.boundingRect().height-1;
        
        dst_vertices[3].x = box.boundingRect().width-1;
        dst_vertices[3].y = box.boundingRect().height-1;
        
        cv::Mat warpAffineMatrix = getAffineTransform(src_vertices, dst_vertices);
        
        cv::Mat rotated;
        cv::Size size(box.boundingRect().width, box.boundingRect().height);
        warpAffine(src, rotated, warpAffineMatrix, size, cv::INTER_LINEAR, cv::BORDER_CONSTANT);
        
        
        [_sourceImageView setNeedsDisplay];
        [_sourceImageView setImage:[self UIImageFromCVMat:rotated]];
        [_sourceImageView setContentMode:UIViewContentModeScaleAspectFit];
        
        rotated.release();
        src.release();
        
        }
    }
    
    - (UIImage *)UIImageFromCVMat:(cv::Mat)cvMat
    {
        NSData *data = [NSData dataWithBytes:cvMat.data length:cvMat.elemSize()*cvMat.total()];
        CGColorSpaceRef colorSpace;
        if ( cvMat.elemSize() == 1 ) {
            colorSpace = CGColorSpaceCreateDeviceGray();
        }
        else {
            colorSpace = CGColorSpaceCreateDeviceRGB();
        }
        CGDataProviderRef provider = CGDataProviderCreateWithCFData( (__bridge CFDataRef)data );
        CGImageRef imageRef = CGImageCreate( cvMat.cols, cvMat.rows, 8, 8 * cvMat.elemSize(), cvMat.step[0], colorSpace, kCGImageAlphaNone|kCGBitmapByteOrderDefault, provider, NULL, false, kCGRenderingIntentDefault );
        UIImage *finalImage = [UIImage imageWithCGImage:imageRef];
        CGImageRelease( imageRef );
        CGDataProviderRelease( provider );
        CGColorSpaceRelease( colorSpace );
        return finalImage;
    }
    
    - (cv::Mat)cvMatFromUIImage:(UIImage *)image
    {
        CGColorSpaceRef colorSpace = CGImageGetColorSpace( image.CGImage );
        CGFloat cols = image.size.width;
        CGFloat rows = image.size.height;
        cv::Mat cvMat( rows, cols, CV_8UC4 );
        CGContextRef contextRef = CGBitmapContextCreate( cvMat.data, cols, rows, 8, cvMat.step[0], colorSpace, kCGImageAlphaNoneSkipLast | kCGBitmapByteOrderDefault );
        CGContextDrawImage( contextRef, CGRectMake(0, 0, rows, cols), image.CGImage );
        CGContextRelease( contextRef );
        CGColorSpaceRelease( colorSpace );
        return cvMat;
    }

Is this the correct approach to my problem? Do you have any sample code that could help me out?

Thank you for reading my question!

UDATE:

I&#39;ve actually Open Sourced my UIImagePickerController replacement here: https://github.com/mmackh/MAImagePickerController-of-InstaPDF
which includes the adjustable cropping view, filters and perspective correction.

Perspective Transform + Crop in iOS with OpenCV

PIL&#39;s [`Image.transform`][1] has a perspective-mode which requires an 8-tuple of data but I can&#39;t figure out how to convert let&#39;s say a right tilt of 30 degrees to that tuple.

Can anyone explain it?

  [1]: http://effbot.org/imagingbook/image.htm#tag-Image.Image.transform

How does perspective transformation work in PIL?

I wonder about the `gluPerspective` parameters.

In all examples I see `fovy` is set to around 45-60degrees
I&#39;ve tried to set it to different values and the object just disappears 
what&#39;s the explanation for it? 

The `aspect` value should always be the ratio? why would one change it?

`zNear, zFar` - once again the usual values are around 10 and 500+ what does it reflect?

Content Type	Original Author	Original Content on Stackoverflow
Question	Searene	View Question on Stackoverflow
Solution 1 - Eclipse	arturhoo	View Answer on Stackoverflow
Solution 2 - Eclipse	J-Dizzle	View Answer on Stackoverflow
Solution 3 - Eclipse	samsamara	View Answer on Stackoverflow
Solution 4 - Eclipse	Josiah Krutz	View Answer on Stackoverflow
Solution 5 - Eclipse	Star Galaxy	View Answer on Stackoverflow

what's the shortcut of switching between different perspectives in eclipse

Eclipse Problem Overview

Eclipse Solutions

Solution 1 - Eclipse

Solution 2 - Eclipse

Solution 3 - Eclipse

Solution 4 - Eclipse

Solution 5 - Eclipse

this class is not key value coding-compliant for the key view

How to avoid a lot of if else conditions

Attributions