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How to use Elasticsearch with MongoDB?
..." to index MongoDB for use in a NodeJS, Express app on a fresh EC2 Ubuntu 14.04 instance.
Make sure everything is up to date.
sudo apt-get update
Install NodeJS.
sudo apt-get install nodejs
sudo apt-get install npm
Install MongoDB - These steps are straight from MongoDB docs.
Choose whatever ...
Reverse colormap in matplotlib
...
488
The standard colormaps also all have reversed versions. They have the same names with _r tacke...
What is the difference between Python's list methods append and extend?
...
append: Appends object at the end.
x = [1, 2, 3]
x.append([4, 5])
print (x)
gives you: [1, 2, 3, [4, 5]]
extend: Extends list by appending elements from the iterable.
x = [1, 2, 3]
x.extend([4, 5])
print (x)
gives you: [1, 2, 3, 4, 5]
...
How to calculate the bounding box for a given lat/lng location?
...oximate locally the Earth surface as a sphere with radius given by the WGS84 ellipsoid at the given latitude. I suspect that the exact computation of latMin and latMax would require elliptic functions and would not yield an appreciable increase in accuracy (WGS84 is itself an approximation).
My imp...
Pass data to layout that are common to all pages
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144
If you are required to pass the same properties to each page, then creating a base viewmodel th...
Execution time of C program
...ating point type. This can be more precise than a second (e.g. you measure 4.52 seconds). Precision depends on the architecture; on modern systems you easily get 10ms or lower, but on older Windows machines (from the Win98 era) it was closer to 60ms.
clock() is standard C; it works "everywhere". Th...
cancelling a handler.postdelayed process
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481
I do this to post a delayed runnable:
myHandler.postDelayed(myRunnable, SPLASH_DISPLAY_LENGTH...
C library function to perform sort
...urn -1;
return 0;
}
int main(int argc, char* argv[])
{
int x[] = {4,5,2,3,1,0,9,8,6,7};
qsort (x, sizeof(x)/sizeof(*x), sizeof(*x), comp);
for (int i = 0 ; i < 10 ; i++)
printf ("%d ", x[i]);
return 0;
}
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django admin - add custom form fields that are not part of the model
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edited Aug 23 '18 at 15:34
Adrian Martin
1,73622 gold badges1818 silver badges2121 bronze badges
answer...
How to efficiently compare two unordered lists (not sets) in Python?
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edited Aug 24 '16 at 8:17
CrowbarKZ
94388 silver badges1616 bronze badges
answered Oct 19 ...