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convert ArrayList to JSONArray
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If I read the JSONArray constructors correctly, you can build them from any Collection (arrayList is a subclass of Collection) like so:
ArrayList<String> list = new ArrayList<String>();
list.add("foo");
list.add("baar");
JSONArray jsArray = new JSONArray(list);
References:
j...
What exactly do the Vagrant commands do?
...tion at vagrantup is on the shorter side.
Some information can be gleaned from command help system.
For example: gem command.
Just type the command without arguments: vagrant gem -h and it produces the information that you may need.
vagrant gem is used to install Vagrant plugins via the Ruby...
Where is PATH_MAX defined in Linux?
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Beware: PATH_MAX is different from NAME_MAX (and the x-ref'd article in part seems to confuse these two, at least in part). Note: POSIX <limits.h> says: A definition of one of the symbolic constants in the following list shall be omitted from the &l...
How do I read from parameters.yml in a controller in symfony2?
...hod in the controller uses the container too, but it can only get services from a container, not parameters. You need getParameter to get parameters.
– Wouter J
Dec 16 '12 at 12:55
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Shortest distance between a point and a line segment
...e line.
// It falls where t = [(p-v) . (w-v)] / |w-v|^2
// We clamp t from [0,1] to handle points outside the segment vw.
const float t = max(0, min(1, dot(p - v, w - v) / l2));
const vec2 projection = v + t * (w - v); // Projection falls on the segment
return distance(p, projection);
}
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Difference between @import and link in CSS
...rs (Netscape 4, etc.), so the @import hack can be used to hide CSS 2 rules from these old browsers.
Again, unless you're supporting really old browsers, there isn't a difference.
If I were you, however, I'd use the <link> variant on your HTML pages, because it allows you to specify things li...
`testl` eax against eax?
...nical answer to "what's this TEST thing all about, and how is it different from CMP", which is sort of implied. See my own answer further down for comments about the semantic meaning of the synonymous JE and JZ. Please review my edit since it's pretty major, and it's still your answer.
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Do AJAX requests retain PHP Session info?
...I had a user logged onto my site, having his id stored in $_SESSION , and from his browser he clicked a 'Save' button which would make an AJAX request to the server. Will his $_SESSION and cookies be retained in this request, and can I safely rely on the id being present in the $_SESSION ?
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How do I read CSV data into a record array in NumPy?
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You can use Numpy's genfromtxt() method to do so, by setting the delimiter kwarg to a comma.
from numpy import genfromtxt
my_data = genfromtxt('my_file.csv', delimiter=',')
More information on the function can be found at its respective document...
apache redirect from non www to www
I have a website that doesn't seem to redirect from non-www to www.
24 Answers
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