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Shortest distance between a point and a line segment
...eeded a Javascript implementation, so here it is, with no dependencies (or comments, but it's a direct port of the above). Points are represented as objects with x and y attributes.
function sqr(x) { return x * x }
function dist2(v, w) { return sqr(v.x - w.x) + sqr(v.y - w.y) }
function distToSegme...
What does the CSS rule “clear: both” do?
...ader, 1 side bar, 1 content area and 1 footer.
No floats for header, next comes the aside tag which I'll be using for my website sidebar, so I'll be floating the element to left.
Note: By default, block level element takes up document 100% width,
but when floated left or right, it will resize...
How to make Twitter Bootstrap menu dropdown on hover rather than click
...;
top: 11px;
left: -6px;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/2.3.2/css/bootstrap.min.css" rel="stylesheet" />
<div class="navbar navbar-fixed-top">
<div class="navbar-inner">
<div class="container-fluid">
<a data...
Understanding checked vs unchecked exceptions in Java
...ing throwing Exception, it isn't always because people are lazy, it's also common that you, when you implement frameworks, let users of the framework be able to throw any exception. You can e.g. check the signature of the Callable interface in JSE
– Kaj
May 24 ...
Same-named attributes in attrs.xml for custom view
...
Solution: Simply extract common attributes from both views and add them directly as children of the <resources> node:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<attr name="myattr1" format="string" />
<attr...
WSDL vs REST Pros and Cons
...s is good if two parties need to have a strict contract(say for inter-bank communication). SOAP also lets you layer things like WS-Security on your documents. SOAP is generally transport-agnostic, meaning you don't necessarily need to use HTTP.
REST is very lightweight, and relies upon the HTTP st...
Change column type from string to float in Pandas
...y what you want, but what if you wanted to save some memory and use a more compact dtype, like float32, or int8?
to_numeric() gives you the option to downcast to either 'integer', 'signed', 'unsigned', 'float'. Here's an example for a simple series s of integer type:
>>> s = pd.Series([1, 2...
What is the difference between properties and attributes in HTML?
...
Where could I find a complete list of attributes to properties (like for -> htmlFor) and similarly a list of properties that take their initial value from an attribute, yet do not reflect it (input.value). I expect this would be somewhere in t...
When should I use a struct rather than a class in C#?
...ng a structure instead of a class if instances of the
type are small and commonly short-lived or are commonly embedded in
other objects.
Do not define a structure unless the type has all of the following characteristics:
It logically represents a single value, similar to primitive...
How do I safely pass objects, especially STL objects, to and from a DLL?
...l those hoops, nor is there a guarantee that a solution which works in one compiler release will work in the next.
Just create a plain C interface using extern "C", since the C ABI is well-defined and stable.
If you really, really want to pass C++ objects across a DLL boundary, it's technically ...