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How to trace the path in a Breadth-First Search?
...
You should have look at http://en.wikipedia.org/wiki/Breadth-first_search first.
Below is a quick implementation, in which I used a list of list to represent the queue of paths.
# graph is in adjacent list representation
graph = {
'1': ['2', '3', '4'],
'2': ['5', '6'],
...
Which is faster: Stack allocation or Heap allocation
...pty classes take up 1 byte of space, minimum
}
int main()
{
std::clock_t start = std::clock();
for (int i = 0; i < 100000; ++i)
empty e;
std::clock_t duration = std::clock() - start;
std::cout << "stack allocation took " << duration << " clock ticks\n";
...
Have Grunt generate index.html for different setups
...ns Hash */
//globalOption : 'foo'
},
dev: {
NODE_ENV : 'DEVELOPMENT'
},
prod : {
NODE_ENV : 'PRODUCTION'
}
},
Preprocess:
preprocess : {
dev : {
src : './src/tmpl/index.html',
dest : './dev/index.html'
},
prod : {...
What is the difference between Ruby 1.8 and Ruby 1.9
...01:0> {1,2}
=> {1=>2}
Action: Convert to {1 => 2}
Array.to_s Now Contains Punctuation
Ruby 1.9
irb(main):001:0> [1,2,3].to_s
=> "[1, 2, 3]"
Ruby 1.8.6
irb(main):001:0> [1,2,3].to_s
=> "123"
Action: Use .join instead
Colon No Longer Valid In When Statements
Rub...
Flask vs webapp2 for Google App Engine
... tutorial here -> https://console.developers.google.com/start/appengine?_ga=1.36257892.596387946.1427891855
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Peak detection in a 2D array
...ow you do it:
import numpy as np
from scipy.ndimage.filters import maximum_filter
from scipy.ndimage.morphology import generate_binary_structure, binary_erosion
import matplotlib.pyplot as pp
#for some reason I had to reshape. Numpy ignored the shape header.
paws_data = np.loadtxt("paws.txt").resh...
What are Vertex Array Objects?
...is first bound, you assign these members by calling
glEnableClientState(GL_VERTEX_ARRAY); glVertexPointer...;
glEnableClientState(GL_NORMAL_ARRAY); glNormalPointer...;
and so on. Which attributes are enabled and the pointers you supply are stored in the VAO.
After that when you bind the VAO agai...
What is Common Gateway Interface (CGI)?
...as you well mention in your question, is an embedded interpreter called mod_php.
So, answering your questions:
What exactly is CGI?
See above.
Whats the big deal with /cgi-bin/*.cgi? Whats up with this? I don't know what is this cgi-bin directory on the server for. I don't know why they h...
How do I create a custom iOS view class and instantiate multiple copies of it (in IB)?
...iew?
@IBOutlet weak var label: UILabel!
@IBAction func buttonTap(_ sender: UIButton) {
label.text = "Hi"
}
required init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
commonInit()
}
override init(frame: CGRect) {
super.init(frame:...
When should static_cast, dynamic_cast, const_cast and reinterpret_cast be used?
...
static_cast is the first cast you should attempt to use. It does things like implicit conversions between types (such as int to float, or pointer to void*), and it can also call explicit conversion functions (or implicit ones). In ...