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What is the difference between HTML tags and ?

...;span> . I've seen them both used to mark a section of a page with an id or class , but I'm interested in knowing if there are times when one is preferred over the other. ...
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Is there a builtin identity function in python?

...is none, a feature was asked in issue 1673203 And from Raymond Hettinger said there won't be: Better to let people write their own trivial pass-throughs and think about the signature and time costs. So a better way to do it is actually (a lambda avoids naming the function): _ = lambda *args...
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Why is this jQuery click function not working?

...tion() { $("#clicker").click(function () { alert("Hello!"); $(".hide_div").hide(); }); }); As jQuery documentation states: "A page can't be manipulated safely until the document is "ready." jQuery detects this state of readiness for you. Code included inside $( document ).ready() will ...
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How to perform Callbacks in Objective-C

...egate implementation; Header File: @interface MyClass : NSObject { id delegate; } - (void)setDelegate:(id)delegate; - (void)doSomething; @end @interface NSObject(MyDelegateMethods) - (void)myClassWillDoSomething:(MyClass *)myClass; - (void)myClassDidDoSomething:(MyClass *)myClass; @end ...
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How can I get browser to prompt to save password?

...page, unfortunately, my solution doesn't work.) Then, we can use <form id='loginForm' action='signedIn.xxx' method='post'> <input type='text' name='username'> <input type='password' name='password'> <button id='loginButton' type='button'>Login</button> <...
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Facebook API - How do I get a Facebook user's profile image through the Facebook API (without requir

... Simply fetch the data through this URL: http://graph.facebook.com/userid_here/picture Replace userid_here with id of the user you want to get the photo of. You can also use HTTPS as well. You can use the PHP's file_get_contents function to read that URL and process the retrieved data. Resour...
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Alter a MySQL column to be AUTO_INCREMENT

... ALTER TABLE document MODIFY COLUMN document_id INT auto_increment share | improve this answer | follow | ...
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Using jQuery how to get click coordinates on the target element

...element ( or ) simply the mouse pointer location Try this Demo : http://jsfiddle.net/AMsK9/ Edit : 1) event.pageX, event.pageY gives you the mouse position relative document ! Ref : http://api.jquery.com/event.pageX/ http://api.jquery.com/event.pageY/ 2) offset() : It gives the offset p...
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Calendar.getInstance(TimeZone.getTimeZone(“UTC”)) is not returning UTC time

... print the Date in the desired timezone. EDIT: Courtesy of @Laurynas, consider this: TimeZone timeZone = TimeZone.getTimeZone("UTC"); Calendar calendar = Calendar.getInstance(timeZone); SimpleDateFormat simpleDateFormat = new SimpleDateFormat("EE MMM dd HH:mm:ss zzz yyyy", Locale.US); simp...
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What is a “slug” in Django?

... A "slug" is a way of generating a valid URL, generally using data already obtained. For instance, a slug uses the title of an article to generate a URL. I advise to generate the slug by means of a function, given the title (or another piece of data), rather than...