You can not remember all shortcuts :)   
Android Studio(actually Intellij)
has a solution 

**quick command search : &lt;kbd&gt;ctrl&lt;/kbd&gt;+&lt;kbd&gt;shift&lt;/kbd&gt;+&lt;kbd&gt;A&lt;/kbd&gt;**

![screenShot of SearchBox][1]

if you have more memory here it is &lt;kbd&gt;CTRL&lt;/kbd&gt; + &lt;kbd&gt;O&lt;/kbd&gt;


  [1]: http://i.stack.imgur.com/Vkbd0.png

&lt;kbd&gt;CTRL&lt;/kbd&gt; + &lt;kbd&gt;O&lt;/kbd&gt;

For more shortcut look [here](https://web.archive.org/web/20171117101309/http://kevinpratama.com/2013/05/17/android-studio-keyboard-shortcut/) (archive.org mirror)

Windows and Linux
&lt;kbd&gt;CTRL&lt;/kbd&gt; + &lt;kbd&gt;O&lt;/kbd&gt;

Mac
&lt;kbd&gt;^&lt;/kbd&gt; + &lt;kbd&gt;O&lt;/kbd&gt;

---

Complete IntelliJ shortcuts

[Windows and Linux](https://www.jetbrains.com/idea/docs/IntelliJIDEA_ReferenceCard.pdf)

[MacOSX](https://www.jetbrains.com/idea/docs/IntelliJIDEA_ReferenceCard_Mac.pdf)

ctrl + o -&gt; windows shows overriden method in Android Studio

I have an Amazon S3 bucket that I make public with a policy like this

    {
    	&quot;Version&quot;: &quot;2012-10-17&quot;,
    	&quot;Statement&quot;: [
    		{
    			&quot;Sid&quot;: &quot;Allow Public Access to All Objects&quot;,
    			&quot;Effect&quot;: &quot;Allow&quot;,
    			&quot;Principal&quot;: &quot;*&quot;,
    			&quot;Action&quot;: &quot;s3:GetObject&quot;,
    			&quot;Resource&quot;: &quot;arn:aws:s3:::bucket/*&quot;
    		}
    	]
    }

My bucket is now visible as
http://bucket.s3-website-us-east-1.amazonaws.com/

I see others refer to their bucket as
http://s3-us-east-1.amazonaws.com/bucket/

I would prefer the 2nd URL, but it gives an Access Denied.

How can I change my policy to allow the 2nd URL ?


URL for public Amazon S3 bucket

When inserting a shell script inside a Makefile we have (?) to use a double dollar sign ($$) to make reference to variables. Why is that so?

    for number in 1 2 3 4 ; do \
        echo $$number ; \
    done

What is the meaning of a double dollar sign in bash/Makefile?

I can finally ask a question to get my points up.  

In android studio, I want to be able to override the method, however I do not know the keyboard shortcut.  Does anyone know? 

How to override method via keyboard shortcut in Android Studio

<p>I can finally ask a question to get my points up.</p>
<p>In android studio, I want to be able to override the method, however I do not know the keyboard shortcut.  Does anyone know?</p>


I am using appcompat v7 to get the look consistent on Android 5 and less. It works rather well. However I cannot figure out how to change the bottom line color and the accent color for EditTexts. Is it possible? 

I have tried to define a custom `android:editTextStyle` (cf. below) but I only succeeded to change the full background color or text color but not the bottom line nor the accent color. Is there a specific property value to use? do I have to use a custom drawable image through the `android:background` property? is it not possible to specify a color in hexa?

     &lt;style name=&quot;Theme.App.Base&quot; parent=&quot;Theme.AppCompat.Light.DarkActionBar&quot;&gt;
         &lt;item name=&quot;android:editTextStyle&quot;&gt;@style/Widget.App.EditText&lt;/item&gt;
     &lt;/style&gt;

     &lt;style name=&quot;Widget.App.EditText&quot; parent=&quot;Widget.AppCompat.EditText&quot;&gt;
         ???
     &lt;/style&gt;

According to android API 21 sources, EditTexts with material design seem to use `colorControlActivated` and `colorControlNormal`. Therefore, I have tried to override these properties in the previous style definition but it has no effect. Probably appcompat does not use it. Unfortunately, I cannot find the sources for the last version of appcompat with material design. 

Changing EditText bottom line color with appcompat v7

I&#39;m updating my app with the new Toolbar from the support library v21. My problem is that the toolbar does not cast any shadow if I don&#39;t set the &quot;elevation&quot; attribute. Is that the normal behavior or I&#39;m doing something wrong?

My code is:

    &lt;LinearLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
       android:layout_width=&quot;fill_parent&quot;
       android:layout_height=&quot;fill_parent&quot;
       android:orientation=&quot;vertical&quot;&gt;
    
       &lt;android.support.v7.widget.Toolbar
           xmlns:app=&quot;http://schemas.android.com/apk/res-auto&quot;
           android:id=&quot;@+id/my_awesome_toolbar&quot;
           android:layout_width=&quot;match_parent&quot;
           android:layout_height=&quot;wrap_content&quot;
           android:background=&quot;?attr/colorPrimary&quot;
           android:elevation=&quot;4dp&quot;
           android:minHeight=&quot;?attr/actionBarSize&quot;
           app:theme=&quot;@style/ThemeOverlay.AppCompat.Dark.ActionBar&quot;
           app:popupTheme=&quot;@style/ThemeOverlay.AppCompat.Light&quot; /&gt;
    
       &lt;FrameLayout
           android:id=&quot;@+id/FrameLayout1&quot;
           android:layout_width=&quot;match_parent&quot;
           android:layout_height=&quot;match_parent&quot;&gt;
           .
           .
           .

And in my Activity - OnCreate method:

        Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
        setSupportActionBar(toolbar);



No shadow by default on Toolbar?

I am creating an app with the new Material Design used in Android Lollipop (5.0).

I am using the following guides:

 - http://android-developers.blogspot.it/2014/10/appcompat-v21-material-design-for-pre.html
 - http://antonioleiva.com/material-design-everywhere/

After I create my toolbar, I receive this error: &quot;The following classes could not be instantiated:
-&#160;android.support.v7.widget.Toolbar&quot;

The app works well in the phone or emulator, but the layout designer of Android Studio doesn&#39;t show the layout correctly.

Here there are some images:

Error in my_awesome_toolbar.xml layout preview
![error in my_awesome_toolbar.xml][1]

Error in activity_my.xml layout preview
![error in activity_my.xml][2]

The xml code of the files:

my_awesome_toolbar.xml:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;utf-8&quot;?&gt;

    &lt;android.support.v7.widget.Toolbar
    xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
    android:id=&quot;@+id/my_awesome_toolbar&quot;
    android:layout_height=&quot;wrap_content&quot;
    android:layout_width=&quot;match_parent&quot;
    android:minHeight=&quot;?attr/actionBarSize&quot;
    android:background=&quot;?attr/colorPrimary&quot; /&gt;

activity_my.xml:

    &lt;RelativeLayout xmlns:android=&quot;http://schemas.android.com/apk/res/android&quot;
                xmlns:tools=&quot;http://schemas.android.com/tools&quot;
                android:layout_width=&quot;match_parent&quot;
                android:layout_height=&quot;match_parent&quot;
                android:id=&quot;@+id/root&quot;
                tools:context=&quot;com.myapp.test.MyActivity&quot;
                android:orientation=&quot;horizontal&quot;&gt;
    
        &lt;include
            android:id=&quot;@+id/toolbar&quot;
            layout=&quot;@layout/my_awesome_toolbar&quot;
            /&gt;
        &lt;!-- Rest of layout --&gt;
    &lt;/RelativeLayout&gt;

MyActivity.java:

    package com.myapp.test;
    
    import android.os.Bundle;
    import android.support.v7.app.ActionBarActivity;
    import android.support.v7.widget.Toolbar;
    import android.view.Menu;
    import android.view.MenuItem;
    
    
    public class MyActivity extends ActionBarActivity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_my);
    
            Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
            setSupportActionBar(toolbar);
        }
    
    
        @Override
        public boolean onCreateOptionsMenu(Menu menu) {
            // Inflate the menu; this adds items to the action bar if it is present.
            getMenuInflater().inflate(R.menu.my, menu);
            return true;
        }
    
        @Override
        public boolean onOptionsItemSelected(MenuItem item) {
            // Handle action bar item clicks here. The action bar will
            // automatically handle clicks on the Home/Up button, so long
            // as you specify a parent activity in AndroidManifest.xml.
            int id = item.getItemId();
            if (id == R.id.action_settings) {
                return true;
            }
            return super.onOptionsItemSelected(item);
        }
    }

xml code of the styles (values/styles.xml):

    &lt;resources&gt;
    
        &lt;style name=&quot;AppTheme&quot; parent=&quot;Theme.AppCompat.Light.NoActionBar&quot;&gt;
            &lt;item name=&quot;colorPrimary&quot;&gt;@color/blue&lt;/item&gt;
            &lt;item name=&quot;colorPrimaryDark&quot;&gt;@color/dark_blue&lt;/item&gt;
            &lt;item name=&quot;actionOverflowButtonStyle&quot;&gt;@style/AppTheme.OverflowButtonStyle&lt;/item&gt;
        &lt;/style&gt;
    
        &lt;!-- Style Title --&gt;
        &lt;style name=&quot;Title&quot;&gt;
            &lt;item name=&quot;android:textColor&quot;&gt;@color/white&lt;/item&gt;
            &lt;item name=&quot;android:textStyle&quot;&gt;bold&lt;/item&gt;
            &lt;item name=&quot;android:textSize&quot;&gt;16sp&lt;/item&gt;
        &lt;/style&gt;
    
        &lt;style name=&quot;AppTheme.OverflowButtonStyle&quot; parent=&quot;Widget.AppCompat.ActionButton.Overflow&quot;&gt;
            &lt;item name=&quot;android:src&quot;&gt;@drawable/overflow_icon&lt;/item&gt;
        &lt;/style&gt;
    &lt;/resources&gt;

At the moment I use Android Studio Beta 0.8.9


  [1]: http://i.stack.imgur.com/WhY1o.png
  [2]: http://i.stack.imgur.com/LV5Oq.png

The following classes could not be instantiated: -&#160;android.support.v7.widget.Toolbar

I&#39;d like to scroll to the bottom of the RecyclerView list after loading the activity.

    GENERIC_MESSAGE_LIST = (ArrayList) intent.getExtras().getParcelableArrayList(ConversationsAdapter.EXTRA_MESSAGE);
    conversationView = (RecyclerView) findViewById(R.id.list_messages);
    conversationView.setHasFixedSize(true);
    conversationViewLayoutManager = new LinearLayoutManager(this);
    conversationView.setLayoutManager(conversationViewLayoutManager);
    conversationViewAdapter = new ConversationAdapter(GENERIC_MESSAGE_LIST, this);
    conversationView.setAdapter(conversationViewAdapter);

`conversationView.scrollTo(...)` throws an exception about being not supported in RecyclerView, and `conversationView.scrollToPosition(...)` doesn&#39;t seem to do anything.

After the above block of code, I added

    conversationView.scrollToPosition(GENERIC_MESSAGE_LIST.size() + 1)

which doesn&#39;t work. There are 30 elements in `GENERIC_MESSAGE_LIST`.

How to scroll to the bottom of a RecyclerView? scrollToPosition doesn&#39;t work

I&#39;ve implemented the newest appcompat library and using the `Toolbar` as action bar. But the problem is I cannot catch the home button / hamburger icon click event. I&#39;ve tried and looked everything but doesn&#39;t seem to find a similar problem.

This is my `Activity` class :

    protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		toolbar = (Toolbar) findViewById(R.id.toolbar);
	    setSupportActionBar(toolbar);
		
		// Set up the drawer.
		navDrawerFragment = 
            (NavigationDrawerFragment) getSupportFragmentManager()
            .findFragmentById(R.id.navigation_drawer);
		navDrawerFragment.setUp(
            R.id.navigation_drawer, 
            (DrawerLayout) findViewById(R.id.drawer_layout), 
            toolbar);
    }

And this is my NavigationDrawerFragment class :

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        if (savedInstanceState != null) {
            currentSelectedPosition = savedInstanceState.getInt(
                STATE_SELECTED_POSITION);
            fromSavedInstanceState = true;
        }

        // Select either the default item (0) or the last selected item.
        selectItem(currentSelectedPosition);
    }
    
    @Override
    public void onActivityCreated (Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        // Indicate that this fragment would like 
        // to influence the set of actions in the action bar.
        setHasOptionsMenu(true);
    }

    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                Bundle savedInstanceState) {
            drawerListView = (ListView) inflater.inflate(
                R.layout.fragment_navigation_drawer, container, false);
            drawerListView.setOnItemClickListener(
                new AdapterView.OnItemClickListener() {
                @Override
                public void onItemClick(AdapterView&lt;?&gt; parent, 
                    View view, int position, long id) {
                    selectItem(position);
                }
            });
            //mDrawerListView.setAdapter();
            //mDrawerListView.setItemChecked(mCurrentSelectedPosition, true);
            return drawerListView;
    }

    public void setUp(int fragmentId, DrawerLayout drawerLayout, Toolbar toolbar) {
        fragmentContainerView = getActivity().findViewById(fragmentId);
        this.drawerLayout = drawerLayout;

        // set a custom shadow that overlays the main 
        // content when the drawer opens
        drawerLayout.setDrawerShadow(
            R.drawable.drawer_shadow, GravityCompat.START);
        // set up the drawer&#39;s list view 
        // with items and click listener

        ActionBar actionBar = getActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setHomeButtonEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the navigation drawer and the action bar app icon.
        drawerToggle = new ActionBarDrawerToggle(
            getActivity(), 
            drawerLayout, 
            toolbar, 
            R.string.navigation_drawer_open, 
            R.string.navigation_drawer_close) {
        	public void onDrawerClosed(View view) {
                super.onDrawerClosed(view);
            }

            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
            }
        };
        
        // If the user hasn&#39;t &#39;learned&#39; about the drawer, 
        // open it to introduce them to the drawer,
        // per the navigation drawer design guidelines.
        if (!userLearnedDrawer &amp;&amp; !fromSavedInstanceState) {
            drawerLayout.openDrawer(fragmentContainerView);
        }

        // Defer code dependent on restoration of previous instance state.
        drawerLayout.post(new Runnable() {
            @Override
            public void run() {
                drawerToggle.syncState();
            }
        });

        drawerLayout.setDrawerListener(drawerToggle);
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt(STATE_SELECTED_POSITION, currentSelectedPosition);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Forward the new configuration the drawer toggle component.
        drawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
    	Log.d(&quot;cek&quot;, &quot;item selected&quot;);
        if (drawerToggle.onOptionsItemSelected(item)) {
        	Log.d(&quot;cek&quot;, &quot;home selected&quot;);
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

when I clicked a menu item, the log &quot;item selected&quot; gets called. But when I click on the home button, it opens navigation drawer but the log &quot;home selected&quot; never get called. I&#39;ve set `onOptionsItemSelected` method inside my `Activity` as well, but it still doesn&#39;t get called.

Cannot catch toolbar home button click event

I believed, `inline` was obsolete because I read [here](https://isocpp.org/wiki/faq/inline-functions):

&gt; No matter how you designate a function as `inline`, it is a request that the compiler is allowed to ignore: the compiler might inline-expand some, all, or none of the places where you call a function designated as `inline`.

However, [Angew](https://stackoverflow.com/users/1782465/angew) seems to understand something I don&#39;t. In [this question](https://stackoverflow.com/q/29771146/2642059) he and I go back and forth quite a bit, on whether `inline` is still useful.

This question is *not* a question on:

 * The historical use of `inline` or where `inline` could still be used to hint to the compiler to `inline` functions: https://stackoverflow.com/questions/1759300/when-should-i-write-the-keyword-inline-for-a-function-method.
 * The benefits or drawbacks of inlining function code: https://stackoverflow.com/q/145838/2642059
 * Forcing the compiler to `inline` function code: https://stackoverflow.com/q/13228326/2642059

Bearing in mind that the compiler can `inline` at will, so `inline` is not helpful there: **Where can `inline` be used to force, *not suggest*, a change in compiled code?**

Is there still a use for inline?

I&#39;m writing an explanation for some code for a course, and have been accidentally using the words `method` and `function` interchangeably. I decided to go back over and fix the wording, but ran into a hole in my understanding.

From what I understand, a subroutine is a `function` if it doesn&#39;t act on an instance of a class (its effect is restricted to its explicit input/output), and is a `method` if it operates on an instance of a class (it may carry out side effects on the instance that make it impure).

There&#39;s a [good discussion here][1] on the topic. Note that by the accepted answer&#39;s definitions, a static `method` should actually be a function because an instance is never implicitly passed, and it doesn&#39;t have access to any instance&#39;s members.

With this is mind though, shouldn&#39;t static `methods` actually be functions?

By their definition they don&#39;t act on particular instances of a class; they&#39;re only &quot;tied&quot; to the class because of relation. I&#39;ve seen a few good looking sites that refer to static subroutines as &quot;methods&quot; though ([Oracle][2], [Fredosaurus][3], [ProgrammingSimplified][4]), so either they&#39;re all overlooking the terminology, or I&#39;m missing something (my guess is the latter).

I&#39;d like to make sure I am using the correct wording.   
***Can anybody clear this up?***


  [1]: https://stackoverflow.com/questions/155609/difference-between-a-method-and-a-function
  [2]: https://docs.oracle.com/javase/tutorial/java/javaOO/classvars.html
  [3]: http://www.fredosaurus.com/notes-java/flow/methods/50static-methods.html
  [4]: http://www.programmingsimplified.com/java/source-code/java-static-method-program

Why is a static method considered a method?

In this code when I create an Object in the `main` method and then call that objects method: `ff.twentyDivCount(i)`(runs in 16010 ms) , it runs much faster than calling it using this annotation: `twentyDivCount(i)`(runs in 59516 ms). Of course, when I run it without creating an object, I make the method static, so it can be called in the main.

    public class ProblemFive {

        // Counts the number of numbers that the entry is evenly divisible by, as max is 20
        int twentyDivCount(int a) {    // Change to static int.... when using it directly
            int count = 0;
            for (int i = 1; i&lt;21; i++) {

                if (a % i == 0) {
                    count++;
                }
            }
            return count;
        }

        public static void main(String[] args) {
            long startT = System.currentTimeMillis();;
            int start = 500000000;
            int result = start;

            ProblemFive ff = new ProblemFive();

            for (int i = start; i &gt; 0; i--) {

                int temp = ff.twentyDivCount(i); // Faster way
                           // twentyDivCount(i) - slower

                if (temp == 20) {
                    result = i;
                    System.out.println(result);
                }
            }

            System.out.println(result);

            long end = System.currentTimeMillis();;
            System.out.println((end - startT) + &quot; ms&quot;);
        }
    }

EDIT: So far it seems that different machines produce different results, but using JRE 1.8.* is where the original result seems to be consistently reproduced.


Large difference in speed of equivalent static and non static methods

right here is a block of my code. It works perfect in fireFox and Chrome. But not in IE. I get the error &quot;`Object doesn&#39;t support property or method &#39;includes&#39;`&quot;

    function rightTreeSwapfunc2() {
        if ($(&quot;.right-tree&quot;).css(&quot;background-image&quot;).includes(&quot;stage1&quot;) == true) {
            $(&quot;.right-tree&quot;).css({
                backgroundImage: &quot;url(/plant-breeding/img/scenes/plant-breeding/stage5.jpg)&quot;
            })
        } else {
            $(&quot;.right-tree&quot;).css({
                backgroundImage: &quot;url(/plant-breeding/img/scenes/plant-breeding/stage3.jpg)&quot;
            })
        }
    }


I could change it up a bit and use vanilla JS and do:

`document.getElementById(&quot;right-tree&quot;).classList.contains`

But I would rather see if there is a way to get it to work in IE before changing the JS and editing the HTML and CSS. 

includes() not working in all browsers

I&#39;m a little confused about Java&#39;s *varargs* methods:

    public static int sum(int ...a) {
        return 0;
    }
    
    public static double sum(double ...a) {
        return 0.0;
    }

When I tried to invoke `sum()` without passing any argument, then the `int` version of method was invoked. I don&#39;t understand why; normally the compiler must raise an error.

By contrast, the following piece of code generates a compiler error when I try to invoke `sum` without any argument:

    public static int sum(int ...a) {
        return 0;
    }
    
    public static boolean sum(boolean ...a) {
        return true;
    }

Varargs Java Ambiguous Call

I noticed that the compiler won&#39;t let me override a stored property with another stored value (which seems odd):

    class Jedi {
        var lightSaberColor = &quot;Blue&quot;
    }
    
    
    class Sith: Jedi {
        override var lightSaberColor = &quot;Red&quot; // Cannot override with a stored property lightSaberColor
    }

However, I&#39;m allowed to do this with a computed property:

    class Jedi {
        let lightSaberColor = &quot;Blue&quot;
    }
    
    
    class Sith: Jedi {
        override var lightSaberColor : String{return &quot;Red&quot;}
    
    }

Why am I not allowed to give it another value?

Why is overriding with a stored property an abomination and doing it with a computed one kosher? What where they thinking?


Overriding a stored property in Swift

How to underline a `UILabel` in Swift? I searched the Objective-C ones but couldn&#39;t quite get them to work in Swift.

How to underline a UILabel in swift?

Xcode 6.3.  Within a class implementing UITextFieldDelegate protocol, I would like to override touchesBegan() method to possibly hide the keyboard.  If I avoid a compiler error in the function spec, then there is a complier error trying to read the &quot;touch&quot; from the Set or NSSet, or else the   super.touchesBegan(touches , withEvent:event) throws an error.  One of these combinations compiled in Xcode 6.2!  (So where is documentation to Swift &quot;Set&quot; and how to get an element from one?)

     override func touchesBegan(touches: NSSet, withEvent event: UIEvent) { 
        // Hiding the Keyboard when the User Taps the Background
            if let touch =  touches.anyObject() as? UITouch {
                if nameTF.isFirstResponder() &amp;&amp; touch.view != nameTF {
                    nameTF.resignFirstResponder();
                }
            }
            super.touchesBegan(touches , withEvent:event)
        }

Try:

    override func touchesBegan(touches: NSSet, withEvent event: UIEvent) or
    override func touchesBegan(touches: Set&lt;UITouch&gt;, withEvent event: UIEvent) 

Compiler error:
Overriding method with selector &#39;touchesBegan:withEvent:&#39; has incompatible type &#39;(NSSet, UIEvent) -&gt; ()&#39;
and

    super.touchesBegan(touches , withEvent:event)
also complains

&#39;NSSet&#39; is not implicitly convertible to &#39;Set&lt;NSObject&gt;&#39;; did you mean to use &#39;as&#39; to explicitly convert?


Try:

    override func touchesBegan(touches: Set&lt;AnyObject&gt;, withEvent event: UIEvent) 

Compiler error:
 Type &#39;AnyObject&#39; does not conform to protocol &#39;Hashable&#39;


Try:

    override func touchesBegan(touches: Set&lt;NSObject&gt;, withEvent event: UIEvent) 

Compiler error at 

    if let touch = touches.anyObject() as? UITouch 

 &#39;Set&lt;NSObject&gt;&#39; does not have a member named &#39;anyObject&#39; BUT the function spec and call to super() are OK!

Try:

    override func touchesBegan(touches: NSSet&lt;AnyObject&gt;, withEvent event: UIEvent) -&gt; () or
    override func touchesBegan(touches: NSSet&lt;NSObject&gt;, withEvent event: UIEvent) 


Compiler error:
Cannot specialize non-generic type &#39;NSSet&#39;






Overriding method with selector &#39;touchesBegan:withEvent:&#39; has incompatible type &#39;(NSSet, UIEvent) -&gt; ()&#39;

As I understand it, the `override` keyword states that a given declaration implements a base `virtual` method, and the compilation should fail if there is no matching base method found.

My understanding of the `final` keyword is that it tells the compiler that no class shall override this `virtual` function.

So is `override final` redundant? [It seems to compile fine][1]. What information does `override final` convey that `final` does not? What is the use case for such a combination?


  [1]: http://ideone.com/9V7zNx

Does final imply override?

Let&#39;s say I have a class `Person` which looks like this:

    class Person {
        constructor(
            public firstName: string,
            public lastName: string,
            public age: number
        ) {}
    }

I have overridden the `toString` method as follows.

    public toString(): string {
        return this.firstName + &#39; &#39; + this.lastName;
    }

Now I expect to be able to do the following, which works in runtime:

    function alertMessage(message: string) {
        alert(message);
    }

    alertMessage(new Person(&#39;John&#39;, &#39;Smith&#39;, 20));

But this still gives me this error:

&gt; TS2345: Argument of type &#39;Person&#39; is not assignable to parameter of type &#39;string&#39;.

How can I assign a `Person` to this `string` argument?

TypeScript override ToString()

I&#39;m having issues with Xcode being quite unreliable when using the keyboard shortcut to comment or uncomment code &lt;kbd&gt;⌘&lt;/kbd&gt;+&lt;kbd&gt;/&lt;/kbd&gt;. I can&#39;t seem to find a real pattern as to when it breaks, but it usually happens after building and running my code on the simulator. It will not work again until I edit something in any one of my code files. Even if I switch to another file in the main view, commenting via shortcut does not work. Other keyboard shortcuts, such as indenting &lt;kbd&gt;⌘&lt;/kbd&gt;+&lt;kbd&gt;[&lt;/kbd&gt; continue to work just fine.

Do other people have this issue, and if so, have you found a solution? I know it seems like a small complaint, but when running and then quickly trying to comment out a block of code to check the effect, it&#39;s a bit of an inconvenience.

I am using Xcode 6.1 (6A1052d) on OXS Yosemite 10.10 (14A389) and developing in Objective-C for iOS if that matters.

Xcode Command-Slash Shortcut to Comment Only Works Sometimes

How can one move to previous caret position(s) in android studio?
It was possible in Eclipse.

How to move to previous caret position in Android Studio

I know that I can jump to the beginning and end of a line inside the OS X terminal with &lt;kbd&gt;Ctrl&lt;/kbd&gt;+&lt;kbd&gt;A&lt;/kbd&gt; and &lt;kbd&gt;Ctrl&lt;/kbd&gt; + &lt;kbd&gt;E&lt;/kbd&gt;. But I&#39;m so used to jumping with &lt;kbd&gt;Cmd&lt;/kbd&gt;+&lt;kbd&gt;Right&lt;/kbd&gt; arrow and &lt;kbd&gt;Cmd&lt;/kbd&gt;+&lt;kbd&gt;Left&lt;/kbd&gt; arrow from my editor, that I would love to use these shortcuts for the terminal too.

I haven&#39;t found a solution with Google, so maybe here someone can help.

**Update**

As in the comments, I tried the solution from https://stackoverflow.com/questions/81272/is-there-any-way-in-the-os-x-terminal-to-move-the-cursor-word-by-word/81299#81299

Unfortunately, the Terminal settings seems to not include &lt;kbd&gt;Cmd&lt;/kbd&gt; as a Modifier Key, as you can see here:

![Modifier Keys of Terminal][1]


  [1]: http://i.stack.imgur.com/nHqff.png

OS X Terminal shortcut: Jump to beginning/end of line

I am used to Resharper where I can search for files, not the content, but the filename, which makes it quick to open new files.

Is this feature implemented in Visual Studio Code and is there a shortcut for it?

How do I search for files in Visual Studio Code?

Using Microsoft&#39;s Visual Studio Code, how do I duplicate a line of code and then move it up and down? (Similar to Sublime&#39;s &lt;kbd&gt;cmd&lt;/kbd&gt;+&lt;kbd&gt;shift&lt;/kbd&gt;+&lt;kbd&gt;d&lt;/kbd&gt; behaviour)

It&#39;s a feature that I use constantly, and am struggling using Visual Studio Code without it.

Content Type	Original Author	Original Content on Stackoverflow
Question	ahsan.dev	View Question on Stackoverflow
Solution 1 - Android	Alupotha	View Answer on Stackoverflow
Solution 2 - Android	Ragnar	View Answer on Stackoverflow
Solution 3 - Android	GabrielOshiro	View Answer on Stackoverflow
Solution 4 - Android	LearningToCode	View Answer on Stackoverflow

How to override method via keyboard shortcut in Android Studio

Android Problem Overview

Android Solutions

Solution 1 - Android

Solution 2 - Android

Solution 3 - Android

Solution 4 - Android

What is the meaning of a double dollar sign in bash/Makefile?

URL for public Amazon S3 bucket

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