&gt; This flag causes the linker to load every object file in the library that defines an Objective-C class or category. While this option will typically result in a larger executable (due to additional object code loaded into the application), it will allow the successful creation of effective Objective-C static libraries that contain categories on existing classes.

From this [Technical Q&amp;A][1]


  [1]: http://developer.apple.com/library/mac/#qa/qa1490/_index.html

Is there a way to limit `git diff` to changed files?

I&#39;d like to see the differences between two commits, but exclude paths that don&#39;t exist in one or the other (additions/deletions).  The following Perl one-liner illustrates most of what I want:

    git diff master.. | perl -lnwe &#39;print unless /^(new|deleted) file/../^diff/ and not /^diff/&#39;

But that leaves `diff --git a/path b/path` lines for the files that were new or deleted.  Plus it&#39;d be much nicer if I didn&#39;t have to parse (also fails if any hunk contains anything matching /^diff/, for example).

Another alternative I tried was:

    git diff --name-status (args) | perl -lnwe &#39;print if s/^M\s+//&#39; | xargs git diff (args) --

Its output is better, but it still feels hackish.

Filter git diff by type of change

How can I make a multiline `UILabel` in interface builder for iOS? I tried the `UITextView` but it didn&#39;t quite suit my needs.

How can I add multiline (text) in label?

iOS multiline label in Interface builder

I have an app that works with and without the linker flag.  However, without the linker flag, I get a very different behaviour when adding data to a view.

What does the -ObjC linker flag do?

<p>I have an app that works with and without the linker flag.  However, without the linker flag, I get a very different behaviour when adding data to a view.</p>


Is it possible to save images into `NSUserDefaults` as an object and then retrieve for further use?

Save images in NSUserDefaults?

Yes, I know if I wish my app to be responsive to users&#39; multitasking actions, such as switch to another app, I should deal with 

    - (void)applicationWillResignActive:(UIApplication *)application
    - (void)applicationDidBecomeActive:(UIApplication *)application

What if my app is doing a quite-long time consuming operation (like downloading a big file) and the user causes my app to enter the background? Will that operation automatically be suspended and resumed when the user comes back to my app?

What exactly will happen behind the scene when my app enters the background or resumes in the foreground?

What if when users let my app go to the background my app&#39;s execution is just in the middle of a method?

For e.g., my app is doing

    for (int i = 1 to 10000K) {
        do some calculation;
    }


When i== 500K, user switches to another app. What happens to the for-loop in my app?

When an iOS application goes to the background, are lengthy tasks paused?

There are several examples of the `UIPanGestureRecognizer` class. For example I have read [this][1] and I am still not able to use it...

On the nib file that I am working on I have a `UIView` (white rectangle on image) that I wish to drag with that class:

![enter image description here][2]

and in my .m file I have placed:

    - (void)setTranslation:(CGPoint)translation inView:(UIView *)view
    {
        NSLog(@&quot;Test to see if this method gets executed&quot;);
    }

and that method does not get executed when I drag the mouse across the `UIView`. I have also tried placing:

    - (void)pan:(UIPanGestureRecognizer *)gesture
    {
        NSLog(@&quot;testing&quot;);
    }

And that method does not get executed either. Maybe I am wrong but I think this methods should work like the `- (void) touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event` method where I just have to place that method and it will get called whenever there are touches. 

What am I doing wrong? Maybe do I have to draw a connection to that method? If so how can I do that? 





  [1]: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIPanGestureRecognizer_Class/Reference/Reference.html#//apple_ref/occ/cl/UIPanGestureRecognizer
  [2]: http://i.stack.imgur.com/DYBkS.png




How to use UIPanGestureRecognizer to move object? iPhone/iPad

How would I define the frame for a `UISegmentedControl`? 
I would like the segmented control to appear at the bottom of a `container view` i.e `UIView`. 

How to programmatically add a UISegmentedControl to a container view

I am making a registration alertview that has a UITextField in it where the user can enter their registration number. everything is pretty much their, however I would like to remove the copy paste function from the textfield programmatically since their is no InterfaceBuilder version of the textfield I have no idea how to do this.. 

here Is my UIalertview thus far...


    - (void)pleaseRegisterDevice {
    
        UIAlertView *myAlertView = [[UIAlertView alloc] initWithTitle:@&quot;Please Register Device!&quot; message:@&quot;this gets covered&quot; delegate:self cancelButtonTitle:nil otherButtonTitles:@&quot;OK&quot;, nil];
        regTextField = [[UITextField alloc] initWithFrame:CGRectMake(12.0, 45.0, 260.0, 25.0)];
        [regTextField setBackgroundColor:[UIColor whiteColor]];
        regTextField.textAlignment = UITextAlignmentCenter;
        [myAlertView addSubview:regTextField];
        [myAlertView show];
        [myAlertView release];
    	
    }



How to disable copy paste option from UITextField programmatically

I&#39;m having trouble converting a string into an integer. I googled it but all I can find is how to convert an int into a string. Does anyone know how to do it the other way around? Thanks.

Convert a string into an int

I am using ARC successfully in my project. However, I have encountered a few files (e.g., in unit tests and mock objects) where the rules of ARC are a little more fragile right now. I recall hearing that there was a way to disable ARC on a per-file basis, though I have been unable to find this option.

Is this possible? How do I disable ARC on a per-file basis?

How can I disable ARC for a single file in a project?

Once created does the push notification device token ever change? 

**Example** when the app is updated? or in any other case it can change??



Does the APNS device token ever change, once created?

Recently, I have started using Xcode 4 for developing iOS apps.

In Xcode intellisense&#39;s autocomplete box, there are some letters in colored boxes before every suggestion. I know that they represent the **property of the word we are typing** like f,T,C,M,P,C,K,# etc. 
![enter image description here][1]

&gt; Is there some kind of glossary available to find their quick meanings?

Meanings of f,C,T,# are understandable (function, class etc) but there are many others which I dont know. I assume these letters are standard across all IDEs like Visual Studio, Netbeans etc. Correct me if I am wrong.

Please suggest.


  [1]: http://i.stack.imgur.com/8LZZ1.png

Xcode intellisense meaning of letters in colored boxes like f,T,C,M,P,C,K,# etc

I&#39;m trying to draw some thumbnail images at a fixed size (100x100) using `UIImageView`. I&#39;ve set the frame size of my image view to be 100x100, and set the `contentMode` to `UIViewContentModeScaleAspectFill`.

My understanding is that this should cause the image to be drawn at the size I set, and the image will fill the area of the image, and clip any portions of the image that are outside the size I set for the image view. However, the image is still drawn larger or smaller than the 100x100 size that I set for it.

If I set the `contentMode` to `UIviewContentModeScaleToFill`, then the image is drawn at exactly 100x100, but it&#39;s distorted to fit into those dimensions. Any ideas why the aspect fill isn&#39;t clipping as expected?

Here&#39;s my code:

    _photoView = [[UIImageView alloc] initWithImage:photoImage];
    _photoView.contentMode = UIViewContentModeScaleAspectFill;
    [self addSubview:_photoView];
    
    CGRect photoFrame = _photoView.frame;
    photoFrame.size = CGSizeMake(100, 100);
    _photoView.frame = photoFrame;

To better illustrate, here&#39;s an screenshot of what I&#39;m seeing. The green squares are the `UIView` containing the `UIImageView` I&#39;m working with. I&#39;ve set their background color to green, and the frame of the view to 100x100. As a test, the `UIImageViews` are sized to 50x50. As you can see, when using the `...AspectFill`, the images aren&#39;t sized to 50x50, and in some cases are offset from where I&#39;d like them. When using `...ScaleToFill`, they&#39;re sized correctly, but the image is distorted.

![Screenshot illustrating problem][1]


  [1]: http://i.stack.imgur.com/EbOcI.jpg

UIViewContentModeScaleAspectFill not clipping

I know that when we are using template inside another template, we should write it like this:

`vector&lt;pair&lt;int,int&gt; &gt; s;`

and if we write it without the whitespace:

`vector&lt;pair&lt;int,int&gt;&gt; s;`

we will get an error:

&gt; \`&gt;&gt;&#39; should be \`&gt; &gt;&#39; within a nested template argument list

I see this is understandable, but I just can&#39;t help but wondering, in which cases will this be really ambiguous?

Template within template: why &quot;`&gt;&gt;&#39; should be `&gt; &gt;&#39; within a nested template argument list&quot;

What are the Pros/Cons of the different D Compilers? How is the performance and the standard compliance/D2 support? How well are debuggers supported? How good are the Error messages and is the IDE integration? How good is the 64 bit support? My thought so far:

**DMD**

 - Mature and well maintained
 - Only one platform, 64 bit support is not good
 - Not FOSS


**GDC**

 - Supports various platforms
 - Has very mature optimizations, so it&#39;s fast?
 - Out of date runtime?
 - GCC so a good debugger support?


**LDC**

 - Supports various platforms
 - LLVM, so it supports JITing?
 - Has very mature optimizations, so it&#39;s fast?
 - Not very well maintained?
 - Out of date runtime?

**dead/not working**
 
 -  dang
 -  sdc
 -  MiniD - very, very nice, but not D (never claimed to be, though)

I&#39;m thinking about targeting ARM and i think GDC is the tool of choice, but I&#39;m not sure.


DMD vs. GDC vs. LDC

I&#39;m playing around with some asm code, and something is bothering me.

I compile this:

    #include &lt;stdio.h&gt;
    
    int main(int argc, char** argv){
      printf(&quot;Hello World\n&quot;);
      return 0;
    }

with `gcc file.c -S -o file.S` this generates a nice little piece of asm code:


    	.cstring
    LC0:
    	.ascii &quot;Hello World\0&quot;
    	.text
    .globl _main
    _main:
    LFB3:
    	pushq	%rbp
    LCFI0:
    	movq	%rsp, %rbp
    LCFI1:
    	subq	$16, %rsp
    LCFI2:
    	movl	%edi, -4(%rbp)
    	movq	%rsi, -16(%rbp)
    	leaq	LC0(%rip), %rdi
    	call	_puts
    	movl	$0, %eax
    	leave
    	ret
    LFE3:
    	.section __TEXT,__eh_frame,coalesced,no_toc+strip_static_syms+live_support
    EH_frame1:
    	.set L$set$0,LECIE1-LSCIE1
    	.long L$set$0
    LSCIE1:
    	.long	0x0
    	.byte	0x1
    	.ascii &quot;zR\0&quot;
    	.byte	0x1
    	.byte	0x78
    	.byte	0x10
    	.byte	0x1
    	.byte	0x10
    	.byte	0xc
    	.byte	0x7
    	.byte	0x8
    	.byte	0x90
    	.byte	0x1
    	.align 3
    LECIE1:
    .globl _main.eh
    _main.eh:
    LSFDE1:
    	.set L$set$1,LEFDE1-LASFDE1
    	.long L$set$1
    LASFDE1:
    	.long	LASFDE1-EH_frame1
    	.quad	LFB3-.
    	.set L$set$2,LFE3-LFB3
    	.quad L$set$2
    	.byte	0x0
    	.byte	0x4
    	.set L$set$3,LCFI0-LFB3
    	.long L$set$3
    	.byte	0xe
    	.byte	0x10
    	.byte	0x86
    	.byte	0x2
    	.byte	0x4
    	.set L$set$4,LCFI1-LCFI0
    	.long L$set$4
    	.byte	0xd
    	.byte	0x6
    	.align 3
    LEFDE1:
    	.subsections_via_symbols

My next problem is really, how do I compile this output, and can I make GCC do it for me?

How do I compile the asm generated by GCC?

I am working on my compilers concepts however I am a little confused...
Googling got me nowhere to a definite answer.

Is SLR and LR(0) parsers one and same? If not, whats the difference?

What is the difference between LR(0) and SLR parsing?

[This code sample][1] is not able to be compiled. Any work arounds out there?

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;
    
    namespace ConsoleApplication1
    {
        using church = Func&lt;dynamic, dynamic, dynamic&gt;;
    
        class Program
        {
            static void Main(string[] args)
            {
                church True = (a, b) =&gt; a;
                church False = (a, b) =&gt; b;
    
                Func&lt;church, church, church&gt; And = (x, y) =&gt; x(y(True, False), False);
            }
        }
    }

&gt; *Error 6 Internal Compiler Error* (0xc0000005 at address 5476A4CC): likely culprit is &#39;EMITIL&#39;. An internal error has occurred in the compiler. To work around this problem, try simplifying or changing the program near the locations listed below. Locations at the top of the list are closer to the point at which the internal error occurred. Errors such as this can be reported to Microsoft by using the /errorreport option. TestApplication



  [1]: http://pastie.org/2757961

Content Type	Original Author	Original Content on Stackoverflow
Question	bsarrazin	View Question on Stackoverflow
Solution 1 - Iphone	sergio	View Answer on Stackoverflow

What does the -ObjC linker flag do?

Iphone Problem Overview

Iphone Solutions

Solution 1 - Iphone

iOS multiline label in Interface builder

Filter git diff by type of change

Attributions