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Circle line-segment collision detection algorithm?
...
206
Taking
E is the starting point of the ray,
L is the end point of the ray,
C is the cente...
How do I use a Boolean in Python?
...
Transcendence
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answered Nov 17 '09 at 12:51
Bastien LéonardBa...
Why do some C# lambda expressions compile to static methods?
...
Action<string> withClosure = s => Console.WriteLine("My name is {0} and I am {1} years old", s, age);
Action<string> withoutClosure = s => Console.WriteLine("My name is {0}", s);
Console.WriteLine(withClosure.Method.IsStatic);
Console.WriteLine(withoutClosure.Method.IsStatic);
T...
Difference between DateTime and Time in Ruby
...
Newer versions of Ruby (2.0+) do not really have significant differences between the two classes. Some libraries will use one or the other for historical reasons, but new code does not necessarily need to be concerned. Picking one for consistency is p...
random.seed(): What does it do?
...ues / bugs.
– ViFI
Apr 25 '17 at 6:20
1
Following what @ViFI said, keeping program behavior deter...
wkhtmltopdf: cannot connect to X server
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206
or try this (from http://drupal.org/node/870058)
Download wkhtmltopdf. Or better install it w...
Can someone give an example of cosine similarity, in a very simple, graphical way?
...
10 Answers
10
Active
...
How can I apply a function to every row/column of a matrix in MATLAB?
...m the columns of a matrix M. You can do this simply using sum:
M = magic(10); %# A 10-by-10 matrix
columnSums = sum(M, 1); %# A 1-by-10 vector of sums for each column
And here is how you would do this using the more complicated num2cell/cellfun option:
M = magic(10); ...
Slicing of a NumPy 2d array, or how do I extract an mxm submatrix from an nxn array (n>m)?
...
As Sven mentioned, x[[[0],[2]],[1,3]] will give back the 0 and 2 rows that match with the 1 and 3 columns while x[[0,2],[1,3]] will return the values x[0,1] and x[2,3] in an array.
There is a helpful function for doing the first example I gave, n...
How can I detect if the user is on localhost in PHP?
...ient requesting is given by the web server.
$whitelist = array(
'127.0.0.1',
'::1'
);
if(!in_array($_SERVER['REMOTE_ADDR'], $whitelist)){
// not valid
}
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