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Using margin:auto to vertically-align a div

So I know we can center a div horizontally if we use margin:0 auto; . Should margin:auto auto; work how I think it should work? Centering it vertically as well? ...
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How to trigger Autofill in Google Chrome?

...stion and one for which documentation is surprisingly hard to come by. Actually, in many cases you will find that the Chrome Autofill functionality "just works." For example, the following snippet of html produces a form which, at least for me (Chrome v. 18), is automatically filled after clicking i...
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convert String to DateTime

... DateTime.strptime allows you to specify the format and convert a String to a DateTime. share | improve this answer | ...
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Nodejs - Redirect url

...'/login') merely sends the login.html content in the response of the ajax call made. How do I rather open the page? – Tarun Oct 24 '16 at 20:03 ...
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Python: TypeError: cannot concatenate 'str' and 'int' objects [duplicate]

...ed by the last print statement. You can assign the result of the str(c) call to c as correctly shown by @jamylak and then concatenate all of the strings, or you can replace the last print simply with this: print "a + b as integers: ", c # note the comma here in which case str(c) isn't nece...
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What's the difference between `on` and `live` or `bind`?

.../ Equivalent `on` $(document.body).on("click", ".mySelector", fn); Internally, jQuery maps all these methods and shorthand event handler setters to the on() method, further indicating that you should ignore these methods from now on and just use on: bind: function( types, data, fn ) { return...
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Why do access tokens expire?

... This is very much implementation specific, but the general idea is to allow providers to issue short term access tokens with long term refresh tokens. Why? Many providers support bearer tokens which are very weak security-wise. By making them short-lived and requiring refresh, they limit the ...
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Should composer.lock be committed to version control?

... If you update your libs, you want to commit the lockfile too. It basically states that your project is locked to those specific versions of the libs you are using. If you commit your changes, and someone pulls your code and updates the dependencies, the lockfile should be unmodified. If it is ...
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git ignore exception

...have a gitignore file that makes git ignore *.dll files, and that is actually the behavior I want. However, if I want an exception ( i.e. to be able to commit foo.dll ), how can I achieve this? ...
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C: differences between char pointer and array [duplicate]

... True, but it's a subtle difference. Essentially, the former: char amessage[] = "now is the time"; Defines an array whose members live in the current scope's stack space, whereas: char *pmessage = "now is the time"; Defines a pointer that lives in the current sco...