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How do I calculate the normal vector of a line segment?
Suppose I have a line segment going from (x1,y1) to (x2,y2). How do I calculate the normal vector perpendicular to the line?
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Get Mouse Position
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208
MouseInfo.getPointerInfo().getLocation() might be helpful. It returns a Point object correspon...
Using os.walk() to recursively traverse directories in Python
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233
This will give you the desired result
#!/usr/bin/python
import os
# traverse root directory...
Single huge .css file vs. multiple smaller specific .css files? [closed]
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edited May 20 '15 at 10:55
answered Sep 20 '12 at 10:51
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What does it mean when git says a file “needs update”?
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edited Apr 18 '10 at 4:20
answered Apr 18 '10 at 3:17
Mi...
How can I initialize an ArrayList with all zeroes in Java?
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432
The integer passed to the constructor represents its initial capacity, i.e., the number of eleme...
Is mongodb running?
...our OS
or
/etc/init.d/mongodb status # for MongoDB version < 2.6
/etc/init.d/mongod status # for MongoDB version >= 2.6
or
service mongod status
to see if mongod is running (you need to be root to do this, or prefix everything with sudo). Please note that the 'grep...
How to have stored properties in Swift, the same way I had on Objective-C?
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edited Feb 15 '19 at 12:19
answered Mar 27 '17 at 20:39
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Regex Pattern to Match, Excluding when… / Except between
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205
+250
Hans...
Nearest neighbors in high-dimensional data?
... on how to find the nearest neighbors for a given vector. My vector is now 21 dimensions and before I proceed further, because I am not from the domain of Machine Learning nor Math, I am beginning to ask myself some fundamental questions:
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