Yes. By default, the Debug configuration is used for running on the Simulator while the Release is for Archives. I recommend looking at your Schemes.

&gt; Product -&gt; Scheme -&gt; Edit Scheme...

**Scheme, Action, Build configuration**

```
Target -&gt; Schema -&gt; Action -&gt; Build configuration
```

[\[Scheme\]][1]

**actions**: run, test, profile, analyze, archive

`Build Configuration`[&lt;sup&gt;\[About\]&lt;/sup&gt;][2]: Debug, Release, &lt;custom&gt;

To check/change `Build Configuration` you should edit/manage schema



&lt;img src=&quot;https://i.stack.imgur.com/TZZjn.png&quot; height=&quot;150&quot;/&gt;


  [1]: https://stackoverflow.com/a/59215808/4770877
  [2]: https://stackoverflow.com/a/64266553/4770877


I have a list comprehension which approximates to:

    [f(x) for x in l if f(x)]

Where l is a list and f(x) is an expensive function which returns a list.  

I want to avoid evaluating f(x) twice for every non-empty occurance of f(x).  Is there some way to save its output within the list comprehension?

I could remove the final condition, generate the whole list and then prune it, but that seems wasteful.

__Edit__:

Two basic approaches have been suggested:

An inner generator comprehension:

    [y for y in (f(x) for x in l) if y]

or memoization.  

I think the inner generator comprehension is elegant for the problem as stated.  In actual fact I simplified the question to make it clear, I really want:

    [g(x, f(x)) for x in l if f(x)]

For this more complicated situation, I think memoization produces a cleaner end result.

Python list comprehension - want to avoid repeated evaluation

I have some image tags on a site like this.
 
    &lt;img src=&quot;img.png&quot;/&gt;

When I try to load them they are only half loading. When I checked the request in the network console I see that the response is: 

&gt; 206 Partial Content

I googled it and it says that if there is a range set in header, it will be like this. But where are these headers actually set? And how do I avoid this and load the full images?

What does the HTTP 206 Partial Content status message mean and how do I fully load resources?


My standard workflow, when releasing an app to the App Store, is to press `Product &gt; Archive` from Xcode&#39;s menubar.

I realize that I never change the Xcode `Build Configuration` in my build scheme. I have it set to `Debug` during development, but want the version on the App Store to be `Release`.

I am hoping and assuming that `Product &gt; Archive` automatically uses a `Release` build configuration. Can anyone confirm?

Does the Xcode `Archive` function automatically use the `Release` build configuration?

My standard workflow, when releasing an app to the App Store, is to press <code>Product > Archive</code> from Xcode's menubar.
I realize that I never change the Xcode <code>Build Configuration</code> in my build scheme. I have it set to <code>Debug</code> during development, but want the version on the App Store to be <code>Release</code>.
I am hoping and assuming that <code>Product > Archive</code> automatically uses a <code>Release</code> build configuration. Can anyone confirm?

I found the following code snippet which allows `NSNotification` to be posted on the main thread from any background thread. I would like to know if this is a safe and acceptable practice please?

    dispatch_async(dispatch_get_main_queue(),^{
        [[NSNotificationCenter defaultCenter] postNotificationName:@&quot;ImageRetrieved&quot; 
                                                            object:nil 
                                                          userInfo:imageDict];
    });

Posting NSNotification on the main thread

I need to implement a feature that will invoke some code when I double tap on the self.view (view of `UIViewCotroller`). But the problem that I have other UI object on this view and I don&#39;t want to attach any recognizer object to all of them. I found this method below how to make gesture on my view and I know how it works. Right now I am in front of handicap which way to choose for create this recognizer ignoring subview. Any ideas? Thanks.

    UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)];
    [doubleTap setNumberOfTapsRequired:2];
    [self.view addGestureRecognizer:doubleTap];

UITapGestureRecognizer tap on self.view but ignore subviews

There are many great examples on SO to remove the left padding of a UITextView.

https://stackoverflow.com/questions/746670/how-to-lose-margin-padding-in-uitextview

However, I need to remove the right padding too.

I have tried...

    [tv setContentInset: UIEdgeInsetsMake(-4,-8,-8,-X)];//where X is any integer

and just about every other permutation of the last two values to remove the padding and nothing seems to work. Have also tried
 
    [tv sizeToFit];
    [tv setTextAlignment:[NSTextAlignmentRight]];

The following Text in the Textview says &quot;00&quot;

![enter image description here][1]


  [1]: http://i.stack.imgur.com/3kOp8.png

IOS - remove ALL padding from UITextView

I have a View Controller in which my value is 0 (label) and when I open that View Controller from another `ViewController` I have set `viewDidAppear` to set value 20 on label.  It works fine but when I close my app and than again I open my app but the value doesn&#39;t change because `viewDidLoad`, `viewDidAppear` and `viewWillAppear` nothing get called.  How can I call when I open my app.  Do I have to do anything from `applicationDidBecomeActive`? 


ViewDidAppear is not called when opening app from background

I&#39;ve been trying to figure out a way to draw segments as illustrated in the following image:

![enter image description here][1]

I&#39;d like to:

 1. draw the segment
 2. include gradients
 3. include shadows
 4. animate the drawing from 0 to n angle

I&#39;ve been attempting to do this with `CGContextAddArc` and similar calls but not getting very far.

Can anyone help ?


  [1]: http://i.stack.imgur.com/oadFr.png

Draw segments from a circle or donut

Getting a warning : Implicit declaration of function &#39;Fibonacci&#39; is invalid in C99.
What&#39;s wrong?

    #include &lt;stdio.h&gt;
    
    int main(int argc, const char * argv[])
    {
        int input;
        printf(&quot;Please give me a number : &quot;);
        scanf(&quot;%d&quot;, &amp;input);
        getchar();
        printf(&quot;The fibonacci number of %d is : %d&quot;, input, Fibonacci(input)); //!!!
        
    }/* main */
    
    int Fibonacci(int number)
    {
        if(number&lt;=1){
            return number;
        }else{
            int F = 0;
            int VV = 0;
            int V = 1;
            for (int I=2; I&lt;=getal; I++) {
                F = VV+V;
                VV = V;
                V = F;
            }
            return F;
        }
    }/*Fibonacci*/

Xcode - Warning: Implicit declaration of function is invalid in C99

While debugging is there anyway to see a complete stack trace, list of methods called in main thread. Or any way to print them on command window.

Xcode full stack trace

I&#39;ve been running my app on an iPhone 5 /iOS 6, but when I try to run it on an iPhone 4S / iOS6 I get &quot;The run destination iOS Device is not valid for running the scheme NN. The Scheme contains no buildables that can be built for the architectures supported by the run designation device&quot;.

I&#39;ve looked at previous postings on this but they involve issues with the Deployment Target.
In my case I&#39;ve got the Base SDK set to 6.1 and the Deployment Target set to 5.0. 

The iPhone 4 has got iOS version 6.0.1.

&quot;The run destination iOS Device is not valid for running the scheme&quot;

I have been archiving for ad hoc distribution fine for many months and suddenly today I cannot do so as the Archive menu item is disabled. I have not changed anything. I went through the provisioning setup for the project and it looks ok.

My Ad Hoc profile is about to expire in 14 days. Could this be the problem? I don&#39;t believe I can renew it until the day it expires. There is a a &quot;renew&quot; button for my ad hoc profile in the organizer but when I click it I get... 

&gt; The given profile was not found on the provisioning portal.
&gt; Please refresh your provisioning profiles before attempting to renew “MyAddHocProfile”

The profile in the provisioning portal shows active, expiring on the 30th. I noticed that I had not yet upgraded to 4.6.2 and did so. Then I downloaded my profile and double cliked it thinking that would refresh the profile in Xcode, still no joy. I also tried manually replacing the profile file MyAddHocProfile.mobileprovision in the Library.

What do they mean &quot;refresh your provisioning profile&quot;?

Even so, I would think that as long as the profile is active, I should be able to create an archive. I must be doing something else wrong.

Xcode Product -&gt; Archive disabled

I just downloaded Java 7u17 on Mac OS 10.7.5 from [here][1] and then successfully installed it. In order to do some JNI programming, I need to know where Java installed on my Mac. 

I thought that inside the `/Library/Java/JavaVirtualMachines/` folder, there would be a folder called `1.7.0.jdk` or something, but then I found that the folder is empty. This was confirmed by running `ls /Library/Java/JavaVirtualMachines/` in the Terminal. I&#39;ve tried searching for it to find out if it was installed somewhere else, but that doesn&#39;t seem to be turning anything up.

Could someone please tell me where Java is installed on my Mac?


  [1]: http://www.java.com/en/download/mac_download.jsp?locale=en
  [2]: http://solutions.weblite.ca/tutorials/jni_osx/

Where is Java Installed on Mac OS X?

I was trying to install Sencha Touch SDK tools 2.0.0 but could not run it properly. It created an entry in the $PATH variable. 
Later I deleted the sencha sdk tools folder but didn&#39;t realize that the path variable is still there. 

When i did `echo $PATH` I got -

`/Applications/SenchaSDKTools-2.0.0-beta3:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin`

I searched on how to remove variables from $PATH and followed these steps : 

 1. Gave the command `PATH=&quot;/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin&quot;`
 2. Did `echo $PATH` which showed `/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin`
 3. gave the command `export PATH`
 4. Closed terminal and reopened it. Gave the command `echo $PATH`. This time I got 
`/Applications/SenchaSDKTools-2.0.0-beta3:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/usr/X11/bin`

Can anyone tell me what am i doing wrong?

How to remove entry from $PATH on mac

I&#39;m trying to run the following command in Terminal: 

    chown -R couchdb:couchdb /usr/local/var/log/couchdb

However, I keep getting this message:

    chown: couchdb: illegal group name

I am using mac osx (mountain lion) and I have command line tools installed. I really don&#39;t know very much about unix, but I&#39;ve been googling the illegal group name error and haven&#39;t turned up anything that would help. What am I overlooking? Any additional resources you think might be helpful also appreciated.

  

chown illegal group name (mac os x)

Consider the following AppleScript:

    on is_running(appName)
        tell application &quot;System Events&quot; to (name of processes) contains appName
    end is_running

    set safRunning to is_running(&quot;Safari&quot;)
    if safRunning then
        tell application &quot;Safari&quot;
          -- Stuff I only want executed if Safari is running goes here.
        end tell
        return &quot;Running&quot;
    else
        return &quot;Not running&quot;
    end if

The problem: when I run this via the `osascript` command line utility, if Safari is not running, it gets launched and the script reports &quot;Running&quot;.  This is not the behaviour I desire or would expect.  Note that it works as desired/expected when run within AppleScript Editor.

Is this an `osascript` bug / known issue?  Or is it somehow intended behaviour for reasons I&#39;m missing?  Can anyone get it to work as desired?  (BTW I&#39;m running OSX 10.7.5; I can&#39;t see how to get `osascript` to report a version number).

If you comment out the `tell` / `end tell` lines, it behaves as I&#39;d expect: if Safari is not running, it doesn&#39;t launch it, and prints &quot;Not running&quot;.  So it _seems_ to me like the `tell` is what&#39;s causing Safari to be launched, but it doesn&#39;t need to be actually executed, just present in the script...?  For a while I wondered if maybe this was just how `tell` is supposed to work, but since it *doesn&#39;t* work like this in AppleScript Editor, I guess not...

In fact, here&#39;s another, madder, version with similar behaviour:

    on is_running(appName)
        tell application &quot;System Events&quot; to (name of processes) contains appName
    end is_running

    set safRunning to is_running(&quot;Safari&quot;)
    return safRunning
    if false then
        tell application &quot;Safari&quot;
        end tell
    end if

This still always launches Safari, even though `tell` is inside an `if false` block after the return statement!  (But again, this is fine in AppleScript Editor.)

BTW, this behaviour isn&#39;t limited to Safari, but it also isn&#39;t universal:

* Affected apps include: Safari, TextEdit, iPhoto, AppleScript Editor, iTerm, ...
* Non-affected apps include: Google Chrome, iTunes, Preview, Mail, Terminal, Address Book, Echofon, ...

So, does anyone have any ideas about how I might fix or route around this?  Is it an `osascript` bug?  Or am I missing something about AppleScript&#39;s semantics?

For context: I&#39;m trying to write a script (to be embedded/called from some python) which queries open browsers for the URLs of any tabs they have open; I&#39;ve got it all working fine *except* that it always launches Safari, whether it&#39;s open or not.  I&#39;ve boiled down that undesirable behaviour to the simple test case shown above.  I&#39;m not aware of any way to run this script from python without using `osascript`, other than [appscript](http://appscript.sourceforge.net/), which I don&#39;t want to use because [it&#39;s no longer developed/supported/recommended](http://appscript.sourceforge.net/status.html).

Many thanks for all inputs / insights!

How to check in AppleScript if an app is running, without launching it - via osascript utility

How do I find out where MySQL is installed on Mac OS X 10.7.9? I have MAMP installed so I presume that it is bundled with this install?


Content Type	Original Author	Original Content on Stackoverflow
Question	ck_	View Question on Stackoverflow
Solution 1 - Ios	Ben M	View Answer on Stackoverflow
Solution 2 - Ios	yoAlex5	View Answer on Stackoverflow

Does the Xcode `Archive` function automatically use the `Release` build configuration?

Ios Problem Overview

Ios Solutions

Solution 1 - Ios

Solution 2 - Ios

What does the HTTP 206 Partial Content status message mean and how do I fully load resources?

Python list comprehension - want to avoid repeated evaluation

Attributions