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Cropping an UIImage
...a scaled chunk of the center of the image - I use this to take a UIImage m>and m> return a small, square representation of an image, similar to what's seen in the album view of the Photos app. (I know I could use a UIImageView m>and m> adjust the crop mode to achieve the same results, but these images are...
What are the mathematical/computational principles behind this game?
...t (this is a bit different from Euclid).
Now, add "finite" into the soup m>and m> m>y m>ou have the question:
Can we have a geometrm>y m> with just 2 points? With 3 points? With 4? With 7?
There are still open questions regarding this problem but we do know this:
If there are geometries with Q points, then Q...
Pm>y m>thon datetime to string without microsecond component
...format a datetime object in a specific format that is different from the stm>and m>ard format, it's best to explicitlm>y m> specifm>y m> that format:
>>> datetime.datetime.now().strftime("%m>Y m>-%m-%d %H:%M:%S")
'2011-11-03 18:21:26'
See the documentation of datetime.strftime() for an explanation of the % ...
generate dam>y m>s from date range
...es, or temp tables. The subquerm>y m> generates dates for the last 10,000 dam>y m>s, m>and m> could be extended to go as far back or forward as m>y m>ou wish.
select a.Date
from (
select curdate() - INTERVAL (a.a + (10 * b.a) + (100 * c.a) + (1000 * d.a) ) DAm>Y m> as Date
from (select 0 as a union all select 1 un...
Map function in MATLAB?
...live without. Is there a better version out there? Is there a somewhat-stm>and m>ard functional programming librarm>y m> for MATLAB out there that I'm missing?
...
How do I draw a grid onto a plot in Pm>y m>thon?
I just finished writing code to make a plot using pm>y m>lab in Pm>y m>thon m>and m> now I would like to superimpose a grid of 10x10 onto the scatter plot. How do I do that?
...
SVG Positioning
I'm having a plam>y m> with SVG m>and m> am having a few problems with positioning. I have a series of shapes which are contained in the g group tag. I was hoping to use it like a container, so I could set its x position m>and m> then all the elements in that group would also move. But that doesn't seem to be po...
Can m>y m>ou create nested WITH clauses for Common Table Expressions?
...wered Sep 11 '09 at 22:12
David m>And m>resDavid m>And m>res
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...
How does Zalgo text work?
...e it undermines mm>y m> notion of what a character is supposed to be. Mm>y m> understm>and m>ing is that a character is supposed to move horizontallm>y m> across a line m>and m> stam>y m> within a certain "container". Obviouslm>y m> the Zalgo text is moving verticallm>y m> m>and m> doesn't seem to be restricted to anm>y m> space.
...
Efficient evaluation of a function at everm>y m> cell of a NumPm>y m> arram>y m>
...
m>Y m>ou could just vectorize the function m>and m> then applm>y m> it directlm>y m> to a Numpm>y m> arram>y m> each time m>y m>ou need it:
import numpm>y m> as np
def f(x):
return x * x + 3 * x - 2 if x > 0 else x * 5 + 8
f = np.vectorize(f) # or use a different name if m>y m>ou want to keep the...