On Mac OS X and Windows, the `*` and `+` registers both point to the system clipboard so `unnamed` and `unnamedplus` have the same effect: the unnamed register is synchronized with the system clipboard.

On Linux, you have essentially two clipboards: one is pretty much the same as in the other OSes (&lt;kbd&gt;Ctrl&lt;/kbd&gt;&lt;kbd&gt;C&lt;/kbd&gt; and &lt;kbd&gt;Ctrl&lt;/kbd&gt;&lt;kbd&gt;V&lt;/kbd&gt; in other programs, mapped to register `+` in Vim), the other is the &quot;selection&quot; clipboard (mapped to register `*` in Vim).

Using only `unnamedplus` on Linux, Windows and Mac OS X allows you to:

* &lt;kbd&gt;Ctrl&lt;/kbd&gt;&lt;kbd&gt;C&lt;/kbd&gt; in other programs and put in Vim with `p` on all three platforms,
* yank in Vim with `y` and &lt;kbd&gt;Ctrl&lt;/kbd&gt;&lt;kbd&gt;V&lt;/kbd&gt; in other programs on all three platforms.

If you also want to use Linux&#39;s &quot;selection&quot; clipboard, you will also need `unnamed`.

Here is a cross-platform value:

    set clipboard^=unnamed,unnamedplus

Reference:

    :h &#39;clipboard&#39;
    (and follow the tags)

What&#39;s the difference between slf4j-log4j12 and [log4j-over-slf4j][1] and when should each be used?

&lt;!-- language: lang-xml --&gt;

    &lt;dependency&gt;
    	&lt;groupId&gt;org.slf4j&lt;/groupId&gt;
    	&lt;artifactId&gt;slf4j-log4j12&lt;/artifactId&gt;
    	&lt;version&gt;1.7.12&lt;/version&gt;
    &lt;/dependency&gt;
    &lt;dependency&gt;
    	&lt;groupId&gt;org.slf4j&lt;/groupId&gt;
    	&lt;artifactId&gt;log4j-over-slf4j&lt;/artifactId&gt;
    	&lt;version&gt;1.7.12&lt;/version&gt;
    &lt;/dependency&gt;


  [1]: https://www.slf4j.org/legacy.html#log4j-over-slf4j

Difference between slf4j-log4j12 and log4j-over-slf4j

I have a web app which uses localStorage. Now we want to embed this web app on other (third-party) sites via iframe. We want to provide an iframe embed similar to youtube so that other websites can embed our web app in an iframe. Functionally it is the same as if it wouldn&#39;t be embedded. But it does not work. Chrome prints the error message: 

    Uncaught SecurityError: Failed to read the &#39;localStorage&#39; property from &#39;Window&#39;: Access is denied for this document.

I just do the following check (in the iframe): 

&lt;!-- language: lang-js --&gt;

    if (typeof window.localStorage !== &#39;undefined&#39;) {
        // SETUP SESSION, AUHT, LOCALE, SETTINGS ETC
    } else {
        // PROVIDE FEEDBACK TO THE USER
    }

I checked my security settings in Chrome like described in [another Stackoverflow Thread ][1] but it doesn&#39;t work. Is there any change to make embedding possible without the need of adjusting (default) security settings of most modern browsers? 

To give more information, we use Ember-CLI for our web app and turned on [CSP][2] ([more info about the Ember-CLI CSP][3]). Could CSP cause our web app to throw security errors?


  [1]: https://stackoverflow.com/questions/24456891/iframe-in-chrome-error-uncaught-securityerror-failed-to-read-the-sessionstora
  [2]: http://en.wikipedia.org/wiki/Content_Security_Policy
  [3]: http://www.ember-cli.com/#content-security-policy

Iframe in Chrome error: Failed to read &#39;localStorage&#39; from &#39;Window&#39;: Access denied for this document

What is the difference between these 2 settings?

    set clipboard=unnamed
    set clipboard=unnamedplus

Which one should I use in order to have multi-platform .vimrc?

What is difference between Vim&#39;s clipboard &quot;unnamed&quot; and &quot;unnamedplus&quot; settings?

What is the difference between these 2 settings?
<pre><code class="hljs language-ini">set clipboard=unnamed
set clipboard=unnamedplus
</code></pre>
Which one should I use in order to have multi-platform .vimrc?

I have installed docker on my host virtual machine. And now want to create a file using `vi`.

But it&#39;s showing me an error:

    bash: vi: command not found

How to run vi on docker container?

I am new at programming with python, and I am trying to print out with a separator and end but it is still giving me a syntax error.

I am using python 2.7.

Here is my code:

    from __future__ import print_function
    import sys, os, time
    
    for x in range(0,10):
        print x, sep=&#39; &#39;, end=&#39;&#39;
        time.sleep(1)

And here is the error:

    $ python2 xy.py
      File &quot;xy.py&quot;, line 5
        print x, sep=&#39; &#39;, end=&#39;&#39;
              ^
    SyntaxError: invalid syntax
    $



Why does using from __future__ import print_function breaks Python2-style print?

In my .vimrc file I use:
&lt;!-- language: default --&gt;

    syntax on

Today, I was perusing through some .vimrc files from other developers and i&#39;ve notice a few using:
&lt;!-- language: default --&gt;

    syntax enabled

Is there a difference? Are these both accomplishing the same goal just using different locution?

Is there a difference between `syntax on` and `syntax enable` in vimscript?

I&#39;m looking for a Vim command to select a word under cursor in normal mode, like double-clicking by mouse. Does it exist like this?

Vim command: how to select a word under cursor in normal mode

Running into a strange issue with my vimrc setting where I isolated to these 2 combination of lines if I use BufRead.

e.g.

    au BufRead *.py
        \ set softtabstop=4
        \ set shiftwidth=4

Now if I open a file with .py, I get error:

    Error detected while processing BufRead Auto commands for &quot;*.py&quot;:
    E518: Unknown option: set

This only happens under au BufRead and individually each setting works but not in combination?


  [1]: http://tedlogan.com/techblog3.html

vim setting error under BufRead

I&#39;m trying to copy to clipboard without using Flash, I plan to fall back onto Flash with the use of [ZeroClipboard][2] if the browser is incompatible with the javascript approach.

I have an onClick listener for the button which looks like:



    $(buttonWhereActionWillBeTriggered).click(function(){ 
        var copyDiv = document.getElementById(inputContainingTextToBeCopied);
        copyDiv.focus();
        document.execCommand(&#39;SelectAll&#39;);
        document.execCommand(&quot;Copy&quot;, false, null);
    }

and an input field as follows:

    &lt;input type=&quot;text&quot; name=&quot;Element To Be Copied&quot; id=&quot;inputContainingTextToBeCopied&quot; value=&quot;foo&quot;/&gt;

This currently works as expected but the design requires that the field containing the text to be copied is invisible. I have tried both setting `type=&quot;hidden&quot;` and `style=&quot;display: none&quot;` neither of which have succeeded. Both result in the button selecting the whole page and copying the whole content to the user&#39;s clipboard.  
I&#39;m relatively confident the cause is not browser-based but just in case, I am testing on Chrome (Version 43.0.2357.134 (64-bit)) on Mac OS X 10.10.4.

Is there a way that I can maintain the functionality of when the &lt; input&gt; is visible whilst hiding it? or if not an alternate route I can take?

___
I&#39;m aware of similar questions, none of which address my problem, either from being too old, not actually using Javascript, or not fitting the particular scenario. [Here&#39;s a good answer][1] for anyone having similar, less specific issues.

  [1]: https://stackoverflow.com/a/22581382/4323812
  [2]: http://zeroclipboard.org/

Using execCommand (Javascript) to copy hidden text to clipboard

In [questions](https://stackoverflow.com/q/17729853/2071807) and [answers](https://stackoverflow.com/a/31609618/2071807), users very often post an example `DataFrame` which their question/answer works with:

    In []: x
    Out[]: 
       bar  foo
    0    4    1
    1    5    2
    2    6    3

It&#39;d be really useful to be able to get this `DataFrame` into my Python interpreter so I can start debugging the question, or testing the answer.

How can I do this?


How to copy/paste DataFrame from Stack Overflow into Python

According to the Android [documentation][1], ClipData use &quot;label&quot; as a kind of representation to the copied data.

&gt; ClippedData is a complex type containing one or Item instances, each of which can hold one or more representations of an item of data. For display to the user, it also has a label and iconic representation.

And then it further explains &quot;label&quot; as **User-visible label for the clip data** in some [API docs][2]. However, I&#39;m still confused about the usage of the label.

How is this label visible to users? How should I use it? What should I set for this label when I call the ClipData factory method `newPlainText(CharSequence label, CharSequence text)`? for example:

    private void copyToClipBoard() {

        ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
        ClipData clip = ClipData.newPlainText(
                &quot;text label&quot;, // What should I set for this &quot;label&quot;?
                &quot;content to be copied&quot;);
        clipboard.setPrimaryClip(clip);
        Toast.makeText(AboutActivity.this, &quot;Saved to clip board&quot;, Toast.LENGTH_SHORT).show();
    }




  [1]: http://developer.android.com/reference/android/content/ClipData.html
  [2]: http://developer.android.com/reference/android/content/ClipData.html#newPlainText(java.lang.CharSequence,%20java.lang.CharSequence)

What exactly is &quot;label&quot; parameter in ClipData in Android?

I have no knowledge of JavaScript, but I managed to put this code together using bits and bolts from various Stack&amp;nbsp;Overflow answers. It works OK, and it outputs an array of all selected checkboxes in a document via an alert box.

    function getSelectedCheckboxes(chkboxName) {
      var checkbx = [];
      var chkboxes = document.getElementsByName(chkboxName);
      var nr_chkboxes = chkboxes.length;
      for(var i=0; i&lt;nr_chkboxes; i++) {
        if(chkboxes[i].type == &#39;checkbox&#39; &amp;&amp; chkboxes[i].checked == true) checkbx.push(chkboxes[i].value);
      }
      return checkbx;
    }

And to call it I use:

    &lt;button id=&quot;btn_test&quot; type=&quot;button&quot; &gt;Check&lt;/button&gt;
    &lt;script&gt;
        document.getElementById(&#39;btn_test&#39;).onclick = function() {
            var checkedBoxes = getSelectedCheckboxes(&quot;my_id&quot;);
            alert(checkedBoxes);
        }
    &lt;/script&gt;

Now I would like to modify it so when I click the `btn_test` button the output array `checkbx` is copied to the clipboard. I tried adding:

    checkbx = document.execCommand(&quot;copy&quot;);

or

    checkbx.execCommand(&quot;copy&quot;);

at the end of the function and then calling it like:

    &lt;button id=&quot;btn_test&quot; type=&quot;button&quot; onclick=&quot;getSelectedCheckboxes(&#39;my_id&#39;)&quot;&gt;Check&lt;/button&gt;

But it does not work. No data is copied to clipboard.


Copy output of a JavaScript variable to the clipboard

I&#39;m using this function to copy a URL to the clipboard:

    function CopyUrl($this){
		
	  var querySelector = $this.next().attr(&quot;id&quot;);
	  var emailLink = document.querySelector(&quot;#&quot;+querySelector);

	  var range = document.createRange();
	  range.selectNode(emailLink);  
	  window.getSelection().addRange(range);  
		
	  try {  
		// Now that we&#39;ve selected the anchor text, execute the copy command  
		var successful = document.execCommand(&#39;copy&#39;, false, null);
		var msg = successful ? &#39;successful&#39; : &#39;unsuccessful&#39;; 
		
		if(true){
			$this.addClass(&quot;copied&quot;).html(&quot;Copied&quot;);
		}
		
	  } catch(err) {  
		console.log(&#39;Oops, unable to copy&#39;);  
	  }  
		
	  // Remove the selections - NOTE: Should use   
	  // removeRange(range) when it is supported  
	  window.getSelection().removeAllRanges();
    }

Everything works fine on desktop browsers, but not on iOS devices, where my function returns successfully, but the data isn&#39;t copied to the clipboard at all. What&#39;s causing this and how could I solve this problem?

Content Type	Original Author	Original Content on Stackoverflow
Question	syntagma	View Question on Stackoverflow
Solution 1 - Vim	romainl	View Answer on Stackoverflow

What is difference between Vim's clipboard "unnamed" and "unnamedplus" settings?

Vim Problem Overview

Vim Solutions

Solution 1 - Vim

Iframe in Chrome error: Failed to read 'localStorage' from 'Window': Access denied for this document

Difference between slf4j-log4j12 and log4j-over-slf4j

Attributions