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Android phone orientation overview including compass
...Now I think (hope) I have a better feeling for it again but I am still not 100%. I will try and explain my patchy understanding of it and hopefully people will be able to correct me if I am wrong in parts or fill in any blanks.
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remove None value from a list without removing the 0 value
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10 Answers
10
Active
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RegEx - Match Numbers of Variable Length
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135
{[0-9]+:[0-9]+}
try adding plus(es)
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Add zero-padding to a string
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301
You can use PadLeft
var newString = Your_String.PadLeft(4, '0');
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Circle line-segment collision detection algorithm?
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// either solution may be on or off the ray so need to test both
// t1 is always the smaller value, because BOTH discriminant and
// a are nonnegative.
float t1 = (-b - discriminant)/(2*a);
float t2 = (-b + discriminant)/(2*a);
// 3x HIT cases:
// -o-> --|--&...
How do I convert a numpy array to (and display) an image?
...(and display) an image:
from PIL import Image
import numpy as np
w, h = 512, 512
data = np.zeros((h, w, 3), dtype=np.uint8)
data[0:256, 0:256] = [255, 0, 0] # red patch in upper left
img = Image.fromarray(data, 'RGB')
img.save('my.png')
img.show()
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urllib2.HTTPError: HTTP Error 403: Forbidden
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171
By adding a few more headers I was able to get the data:
import urllib2,cookielib
site= "htt...
How to calculate “time ago” in Java?
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179
Take a look at the PrettyTime library.
It's quite simple to use:
import org.ocpsoft.prettyti...