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How do I calculate the normal vector of a line segment?
Suppose I have a line segment going from (x1,y1) to (x2,y2). How do I calculate the normal vector perpendicular to the line?
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In JavaScript, is returning out of a switch statement considered a better practice than using break?
Option 1 - switch using return:
2 Answers
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Can someone explain the HTML5 aria-* attribute?
I wanted to know what the aria-* attributes are used for. What values can they have, and are they defined values or can I create my own values?
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“Templates can be used only with field access, property access, single-dimension array index, or sin
Why am I receiving the error:
4 Answers
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Select between two dates with Django
I am looking to make a query that selects between dates with Django.
4 Answers
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Does Ruby have a string.startswith(“abc”) built in method?
Does Ruby have a some_string.starts_with("abc") method that's built in?
4 Answers
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Join between tables in two different databases?
In MySQL, I have two different databases -- let's call them A and B .
4 Answers
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Getting the parent div of element
...ally simple but I'm having trouble with it. How do I get a parent div of a child element?
7 Answers
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Difference between .success() and .complete()?
As of jQuery 1.5, all jQuery's AJAX methods return a jqXHR object that provides .error() , .success() , and .complete() methods.
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