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How do you get centered content using Twitter Bootstrap?

I'm trying to follow a very basic example. Using the starter page and the grid system , I was hoping the following: 23 An...
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What is the difference between a URI, a URL and a URN?

People talk about URL s, URI s, and URN s as if they're different things, but they look the same to the naked eye. 31 An...
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How does !!~ (not not tilde/bang bang tilde) alter the result of a 'contains/included' Array method

...returns the index of the item in the array if the first argument is found, and it returns -1 if its not found. This means that if you're looking for a boolean of "is this value in the array?", you can't do a boolean comparison, since -1 is a truthy value, and when $.inArray returns 0 (a falsy value)...
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ruby inheritance vs mixins

...It follows that entities or things are generally best modeled in classes, and characteristics or properties of entities or things are best encapsulated in modules. Correspondingly, as noted in section 4.1.1, class names tend to be nouns, whereas module names are often adjectives (Stack versus St...
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Is there an easy way to add a border to the top and bottom of an Android View?

I have a TextView and I'd like to add a black border along its top and bottom borders. I tried adding android:drawableTop and android:drawableBottom to the TextView, but that only caused the entire view to become black. ...
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XMLHttpRequest cannot load file. Cross origin requests are only supported for HTTP

... If you are doing something like writing HTML and Javascript in a code editor on your personal computer, and testing the output in your browser, you will probably get error messages about Cross Origin Requests. Your browser will render HTML and run Javascript, jQuery, a...
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Padding or margin value in pixels as integer using jQuery

... FYI: jQuery does add the 'px', so Ian's solution works and will also return an integer when passed into parseInt() -- and it doesn't require a plugin: parseInt($('a').css('margin-top').replace('px', '')) – Peter Rust Jan 23 '11 at 0:55 ...
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Rails 4: List of available datatypes

...t, 2016-Sep-19: There's a lot more postgres specific datatypes in Rails 4 and even more in Rails 5. share | improve this answer | follow | ...
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Preferred order of writing latitude & longitude tuples in GIS services

When dealing with GIS source code you often need to write latitude and longitude coordinate tuples. 9 Answers ...
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Reference requirements.txt for the install_requires kwarg in setuptools setup.py file

.... It seems silly to duplicate the requirements in both requirements.txt and setup.py , so I was hoping to pass a file handle to the install_requires kwarg in setuptools.setup . ...