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ab load testing
...
The apache benchmark tool is very basic, and while it will give you a solid idea of some performance, it is a bad idea to only depend on it if you plan to have your site exposed to serious stress in production.
Having said that, here's the most common and simplest ...
How do you pass multiple enum values in C#?
...ine the enum, just attribute it with [Flags], set values to powers of two, and it will work this way.
Nothing else changes, other than passing multiple values into a function.
For example:
[Flags]
enum DaysOfWeek
{
Sunday = 1,
Monday = 2,
Tuesday = 4,
Wednesday = 8,
Thursday = 16,
...
When should I use jQuery deferred's “then” method and when should I use the “pipe” method?
...d. The deferred.then() method, which replaces it, should be used instead.
and
As of jQuery 1.8, the deferred.then() method returns a new promise that can filter the status and values of a deferred through a function, replacing the now-deprecated deferred.pipe() method.
The examples below might st...
Is it valid to define functions in JSON results?
...int)
String (double-quoted Unicode
with backslash escaping)
Boolean
(true and false)
Array (an ordered
sequence of values, comma-separated
and enclosed in square brackets)
Object (collection of key:value
pairs, comma-separated and enclosed
in curly braces)
null
...
inline conditionals in angular.js
...e, falseValue) {
return input ? trueValue : falseValue;
};
});
and can be used like this:
{{foo == "bar" | iif : "it's true" : "no, it's not"}}
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How to determine if a decimal/double is an integer?
...
IMHO, the modulus operator and floating point numbers just don't mix in any way useful. The code suggested is incredibly confusing given the number of keystrokes used and will work almost nowhere outside of .NET languages. I would bet it's also much sl...
What is an intuitive explanation of the Expectation Maximization technique? [closed]
... here.
Suppose we have some data sampled from two different groups, red and blue:
Here, we can see which data point belongs to the red or blue group. This makes it easy to find the parameters that characterise each group. For example, the mean of the red group is around 3, the mean of the blue...
How to normalize a NumPy array to within a certain range?
...io /= np.max(np.abs(audio),axis=0)
image *= (255.0/image.max())
Using /= and *= allows you to eliminate an intermediate temporary array, thus saving some memory. Multiplication is less expensive than division, so
image *= 255.0/image.max() # Uses 1 division and image.size multiplications
i...
Using an image caption in Markdown Jekyll
I am hosting a Jekyll Blog on Github and write my posts with Markdown. When I am adding images, I do it the following way:
...
C++ unordered_map using a custom class type as the key
... things:
A hash function; this must be a class that overrides operator() and calculates the hash value given an object of the key-type. One particularly straight-forward way of doing this is to specialize the std::hash template for your key-type.
A comparison function for equality; this is require...