# Greek Question Mark - Semicolon Prank #

*(Tested in JavaScript)*

Replace one or several semicolons in a coworker or friend&#39;s code with the Greek question mark:

`;`

(source: http://en.wikipedia.org/wiki/Question_mark#Greek_question_mark)

If you compare the two, they look exactly the same: `;;`

&gt; The first `;` is a greek question mark, and the second `;` is a normal semicolon.

The Greek question mark throws a `SyntaxError: Unexpected token ILLEGAL` in JavaScript, and probably throws errors in other languages as well. Make sure you&#39;re saving the code file in Unicode/UTF-8.


I am getting the following error while using Selenium in python:

    selenium.common.exceptions.StaleElementReferenceException: Message: u&#39;stale element reference: element is not attached to the page document\n

Interestingly enough, the error pops up at different times in the for loop.  Sometimes it gets through eg. 4 iterations and other times eg. 7.

Some of the relevant code being run is:

    for i in range(0, 22):
    	u = driver.find_elements_by_id(&quot;data&quot;)
	    text = u[0].get_attribute(&quot;innerHTML&quot;)
	    driver.find_elements_by_class_name(&quot;aclassname&quot;)[0].click()

What does this error mean and what is something I can try to fix this?

StaleElementReferenceException on Python Selenium

when i try to send mail using gmail and python error occurred this type of question are already in this site but doesn&#39;t help to me 
                 

    gmail_user = &quot;me@gmail.com&quot;
    gmail_pwd = &quot;password&quot;
    TO = &#39;friend@gmail.com&#39;
    SUBJECT = &quot;Testing sending using gmail&quot;
    TEXT = &quot;Testing sending mail using gmail servers&quot;
    server = smtplib.SMTP(&#39;smtp.gmail.com&#39;, 587)
    server.ehlo()
    server.starttls()
    server.login(gmail_user, gmail_pwd)
    BODY = &#39;\r\n&#39;.join([&#39;To: %s&#39; % TO,
            &#39;From: %s&#39; % gmail_user,
            &#39;Subject: %s&#39; % SUBJECT,
            &#39;&#39;, TEXT])

    server.sendmail(gmail_user, [TO], BODY)
    print (&#39;email sent&#39;)

error:

        server.login(gmail_user, gmail_pwd)
        File &quot;/usr/lib/python3.4/smtplib.py&quot;, line 639, in login
       raise SMTPAuthenticationError(code, resp)
       smtplib.SMTPAuthenticationError: (534, b&#39;5.7.14   
       &lt;https://accounts.google.com/ContinueSignIn?sarp=1&amp;scc=1&amp;plt=AKgnsbtl1\n5.7.14       Li2yir27TqbRfvc02CzPqZoCqope_OQbulDzFqL-msIfsxObCTQ7TpWnbxIoAaQoPuL9ge\n5.7.14 BUgbiOqhTEPqJfb02d_L6rrdduHSxv26s_Ztg_JYYavkrqgs85IT1xZYwtbWIRE8OIvQKf\n5.7.14 xxtT7ENlZTS0Xyqnc1u4_MOrBVW8pgyNyeEgKKnKNyxce76JrsdnE1JgSQzr3pr47bL-kC\n5.7.14 XifnWXg&gt; Please log in via your web browser and then try again.\n5.7.14 Learn more at\n5.7.14 https://support.google.com/mail/bin/answer.py?answer=78754 fl15sm17237099pdb.92 - gsmtp&#39;)    



SMTPAuthenticationError when sending mail using gmail and python

How do you prank a coworker or friend in a way that&#39;s hard to notice and fix? Preferably in JavaScript, and without having install any programs.

JavaScript Prank / Joke

<p>How do you prank a coworker or friend in a way that's hard to notice and fix? Preferably in JavaScript, and without having install any programs.</p>


I&#39;ve recently set-up a local WebSocket server which works fine, however I&#39;m having a few troubles understanding how I should handle a sudden loss of connection which neither the client or server intentionally initiated, i.e: Server loses power, ethernet cables pulled out etc... I need the client&#39;s to know whether connection has been lost within ~10seconds.

Client side, connection is simply:

    var websocket_conn = new WebSocket(&#39;ws://192.168.0.5:3000&#39;);

	websocket_conn.onopen = function(e) {
		console.log(&#39;Connected!&#39;);
	};

	websocket_conn.onclose = function(e) {
		console.log(&#39;Disconnected!&#39;);
	};

I can manually trigger the connection disconnect which works fine,

    websocket_conn.close();

But if I simply pulled the ethernet cable out the back of the computer, or disabled the connection, `onclose` doesn&#39;t get called. I&#39;ve read in another post that it would eventually get called when [TCP detects loss of connectivity][1], but it&#39;s not in the timely manner that I need as the default for Firefox I believe is 10 minutes, and I don&#39;t really want to go around hundreds of computers `about:config` changing this value. The only other suggestion I&#39;ve read is to use a &#39;ping/pong&#39; keep-alive polling style method which seems counterintuitive to the idea of websockets.

Is there an easier way to detect this kind of disconnect behaviour? Are the old posts i&#39;m reading still up to date from a technical point, and the best method is still &#39;ping/pong&#39; style?

  [1]: https://stackoverflow.com/questions/11809267/how-do-i-know-if-connection-is-alive-with-websockets

Handling connection loss with websockets

For the following `ajax` post request for `Flask` (https://stackoverflow.com/questions/14908864/how-can-i-use-data-posted-from-ajax-in-flask):

	$.ajax({
		url: &quot;http://127.0.0.1:5000/foo&quot;, 
		type: &quot;POST&quot;,
		contentType: &quot;application/json&quot;,
		data: JSON.stringify({&#39;inputVar&#39;: 1}),
		success: function( data ) { 
			alert( &quot;success&quot; + data );
		}	
	});


I get a [`Cross Origin Resource Sharing (CORS)`](https://stackoverflow.com/questions/20035101/no-access-control-allow-origin-header-is-present-on-the-requested-resource) error:

    No &#39;Access-Control-Allow-Origin&#39; header is present on the requested resource. 
    Origin &#39;null&#39; is therefore not allowed access. 
    The response had HTTP status code 500.

I tried solving it in the two following ways, but none seems to work.

 1. **Using Flask-CORS**

This is a `Flask` extension for handling `CORS` that should make cross-origin AJAX possible.

 - http://flask-cors.readthedocs.org/en/latest/
 - https://stackoverflow.com/questions/25594893/how-to-enable-cors-in-flask-and-heroku
 - https://stackoverflow.com/questions/24827857/flask-cors-wrapper-not-working-when-jwt-auth-wrapper-is-applied
 - https://stackoverflow.com/questions/22181384/javascript-no-access-control-allow-origin-header-is-present-on-the-requested

My *pythonServer.py* using this solution:

    from flask import Flask
    from flask.ext.cors import CORS, cross_origin
    
    app = Flask(__name__)
    cors = CORS(app, resources={r&quot;/foo&quot;: {&quot;origins&quot;: &quot;*&quot;}})
    app.config[&#39;CORS_HEADERS&#39;] = &#39;Content-Type&#39;
    
    @app.route(&#39;/foo&#39;, methods=[&#39;POST&#39;,&#39;OPTIONS&#39;])
    @cross_origin(origin=&#39;*&#39;,headers=[&#39;Content-Type&#39;,&#39;Authorization&#39;])
    def foo():
    	return request.json[&#39;inputVar&#39;]
        
    if __name__ == &#39;__main__&#39;:
        app.run()

 2. **Using specific Flask Decorator**

This is an *official* Flask code snippet defining a decorator that should allow `CORS` on the functions it decorates.

 - http://flask.pocoo.org/snippets/56/
 - https://stackoverflow.com/questions/16241588/python-flask-cross-site-http-post-doesnt-work-for-specific-allowed-origins
 - http://chopapp.com/#351l7gc3

My *pythonServer.py* using this solution:

    from flask import Flask, make_response, request, current_app
    from datetime import timedelta
    from functools import update_wrapper
    
    app = Flask(__name__)
    
    def crossdomain(origin=None, methods=None, headers=None,
                    max_age=21600, attach_to_all=True,
                    automatic_options=True):
        if methods is not None:
            methods = &#39;, &#39;.join(sorted(x.upper() for x in methods))
        if headers is not None and not isinstance(headers, basestring):
            headers = &#39;, &#39;.join(x.upper() for x in headers)
        if not isinstance(origin, basestring):
            origin = &#39;, &#39;.join(origin)
        if isinstance(max_age, timedelta):
            max_age = max_age.total_seconds()
    
        def get_methods():
            if methods is not None:
                return methods
    
            options_resp = current_app.make_default_options_response()
            return options_resp.headers[&#39;allow&#39;]
    
        def decorator(f):
            def wrapped_function(*args, **kwargs):
                if automatic_options and request.method == &#39;OPTIONS&#39;:
                    resp = current_app.make_default_options_response()
                else:
                    resp = make_response(f(*args, **kwargs))
                if not attach_to_all and request.method != &#39;OPTIONS&#39;:
                    return resp
    
                h = resp.headers
    
                h[&#39;Access-Control-Allow-Origin&#39;] = origin
                h[&#39;Access-Control-Allow-Methods&#39;] = get_methods()
                h[&#39;Access-Control-Max-Age&#39;] = str(max_age)
                if headers is not None:
                    h[&#39;Access-Control-Allow-Headers&#39;] = headers
                return resp
    
            f.provide_automatic_options = False
            return update_wrapper(wrapped_function, f)
        return decorator
    
    @app.route(&#39;/foo&#39;, methods=[&#39;GET&#39;,&#39;POST&#39;,&#39;OPTIONS&#39;])
    @crossdomain(origin=&quot;*&quot;)
    def foo():
    	return request.json[&#39;inputVar&#39;]
        
    if __name__ == &#39;__main__&#39;:
        app.run()

**Can you please give some some indication of why that is?**

Solve Cross Origin Resource Sharing with Flask

I haven&#39;t seen this syntax before and am wondering what it&#39;s all about. 

    var { Navigation } = require(&#39;react-router&#39;);

The brackets on the left are throwing a syntax error:

&gt; unexpected token {


I&#39;m not sure what part of the webpack config is transforming or what the purpose of the syntax is. Is it a Harmony thing? Can someone enlighten me? 

Javascript object bracket notation ({ Navigation } =) on left side of assign

I have a bootstrap 2.32 modal which I am trying to dynamically insert into the HTML of another view. I&#39;m working with Codeigniter 2.1. Following https://stackoverflow.com/questions/27022715/dynamically-inserting-a-bootstrap-modal-partial-view-into-a-view, I have:

    &lt;div id=&quot;modal_target&quot;&gt;&lt;/div&gt;

as the target div for insertion. I have a button in my view that looks like:

         &lt;a href=&quot;#message&quot; class=&quot;btn btn-large btn-info&quot; data-action=&quot;Message&quot; data-toggle=&quot;tab&quot;&gt;Message&lt;/a&gt;

My JS has:

    $.ajax({
        type    : &#39;POST&#39;, 
        url     : &quot;AjaxUpdate/get_modal&quot;,
        cache   : false,
        success : function(data){ 
           if(data){
                $(&#39;#modal_target&#39;).html(data);

                //This shows the modal
                $(&#39;#form-content&#39;).modal();
           }
        }
    });



    

The button of the main view is:

    &lt;div id=&quot;thanks&quot;&gt;&lt;p&gt;&lt;a data-toggle=&quot;modal&quot; href=&quot;#form-content&quot; class=&quot;btn btn-primary btn-large&quot;&gt;Modal powers, activate!&lt;/a&gt;&lt;/p&gt;&lt;/div&gt;

Here is what I&#39;d like to store separately as a partial view:

    &lt;div id=&quot;form-content&quot; class=&quot;modal hide fade in&quot; style=&quot;display: none;&quot;&gt;
        &lt;div class=&quot;modal-header&quot;&gt;
            &lt;a class=&quot;close&quot; data-dismiss=&quot;modal&quot;&gt;&#215;&lt;/a&gt;
            &lt;h3&gt;Send me a message&lt;/h3&gt;
        &lt;/div&gt;
        &lt;div class=&quot;modal-body&quot;&gt;
            &lt;form class=&quot;contact&quot; name=&quot;contact&quot;&gt;
                 &lt;fieldset&gt;

                   &lt;!-- Form Name --&gt;

                &lt;legend&gt;modalForm&lt;/legend&gt;

                &lt;!-- Text input--&gt;
                &lt;div class=&quot;control-group&quot;&gt;
                  &lt;label class=&quot;control-label&quot; for=&quot;user&quot;&gt;User&lt;/label&gt;
                  &lt;div class=&quot;controls&quot;&gt;
                    &lt;input id=&quot;user&quot; name=&quot;user&quot; type=&quot;text&quot; placeholder=&quot;User&quot; class=&quot;input-xlarge&quot; required=&quot;&quot;&gt;
                    &lt;p class=&quot;help-block&quot;&gt;help&lt;/p&gt;
                  &lt;/div&gt;
                &lt;/div&gt;

                &lt;!-- Text input--&gt;
                &lt;div class=&quot;control-group&quot;&gt;
                  &lt;label class=&quot;control-label&quot; for=&quot;old&quot;&gt;Old password&lt;/label&gt;
                  &lt;div class=&quot;controls&quot;&gt;
                    &lt;input id=&quot;old&quot; name=&quot;old&quot; type=&quot;text&quot; placeholder=&quot;placeholder&quot; class=&quot;input-xlarge&quot;&gt;
                    &lt;p class=&quot;help-block&quot;&gt;help&lt;/p&gt;
                  &lt;/div&gt;
                &lt;/div&gt;

                &lt;!-- Text input--&gt;
                &lt;div class=&quot;control-group&quot;&gt;
                  &lt;label class=&quot;control-label&quot; for=&quot;new&quot;&gt;New password&lt;/label&gt;
                  &lt;div class=&quot;controls&quot;&gt;
                    &lt;input id=&quot;new&quot; name=&quot;new&quot; type=&quot;text&quot; placeholder=&quot;placeholder&quot; class=&quot;input-xlarge&quot;&gt;
                    &lt;p class=&quot;help-block&quot;&gt;help&lt;/p&gt;
                  &lt;/div&gt;
                &lt;/div&gt;

                &lt;!-- Text input--&gt;
                &lt;div class=&quot;control-group&quot;&gt;
                  &lt;label class=&quot;control-label&quot; for=&quot;repeat&quot;&gt;Repeat new password&lt;/label&gt;
                  &lt;div class=&quot;controls&quot;&gt;
                    &lt;input id=&quot;repeat&quot; name=&quot;repeat&quot; type=&quot;text&quot; placeholder=&quot;placeholder&quot; class=&quot;input-xlarge&quot;&gt;
                    &lt;p class=&quot;help-block&quot;&gt;help&lt;/p&gt;
                  &lt;/div&gt;
                &lt;/div&gt;



                    &lt;/fieldset&gt;
            &lt;/form&gt;
        &lt;/div&gt;


        &lt;div class=&quot;modal-footer&quot;&gt;
            &lt;input class=&quot;btn btn-success&quot; type=&quot;submit&quot; value=&quot;Send!&quot; id=&quot;submit&quot;&gt;
            &lt;a href=&quot;#&quot; class=&quot;btn&quot; data-dismiss=&quot;modal&quot;&gt;Nah.&lt;/a&gt;
        &lt;/div&gt;
    &lt;/div&gt;

When I click the button, the modal is inserted correctly, but I get the following error:

    TypeError: $(...).modal is not a function 

How can I fix this?
    

TypeError: $(...).modal is not a function with bootstrap Modal

How to remove all files from a directory without removing a directory itself using Node.js?  
I want to remove temporary files. I am not any good with filesystems yet.

I have found [this](https://www.npmjs.org/package/remove) method, which will remove files and the directory. In that, something like `/path/to/directory/*` won&#39;t work.

I don&#39;t really know what commands should use. Thanks for the help.

Content Type	Original Author	Original Content on Stackoverflow
Question	Luc	View Question on Stackoverflow
Solution 1 - Javascript	Luc	View Answer on Stackoverflow

JavaScript Prank / Joke

Javascript Problem Overview

Javascript Solutions

Solution 1 - Javascript

Greek Question Mark - Semicolon Prank

SMTPAuthenticationError when sending mail using gmail and python

StaleElementReferenceException on Python Selenium

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