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How do I handle the window close event in Tkinter?
...op stopped only by setting 'running' to 'False'
while running:
for i in range(200):
if not running:
break
cv.create_oval(i, i, i+1, i+1)
root.update()
This terminates graphics activity nicely. You only need to check running at the right place(s).
...
Is using Random and OrderBy a good shuffle algorithm?
..., if the algorithm isn't biased by the stableness of the OrderBy, then any range of values should give the same result.
The program then tests some values, in the range 1...4096. Looking at the result, it's quite clear that for low values (< 128), the algorithm is very biased (4-8%). With 3 val...
NVIDIA vs AMD: GPGPU performance
...limited x86 without SSE for now
NVIDIA and CUDA still have the edge in the range of libraries available. However they may not be focusing on OpenCL as much as they did before.
In short OpenCL has closed the gap in the past two years. There are new players in the field. But CUDA is still a bit ahea...
How can I set the aspect ratio in matplotlib?
....figure()
adjustFigAspect(fig,aspect=.5)
ax = fig.add_subplot(111)
ax.plot(range(10),range(10))
fig.savefig('axAspect.png')
This produces a figure like so:
I can imagine if your having multiple subplots within the figure, you would want to include the number of y and x subplots as keyword param...
How can I recover a lost commit in Git?
...tash as well.
git revert <sha-1>
"Undo" the given commit or commit range.
The reset command will "undo" any changes made in the given commit.
A new commit with the undo patch will be committed while the original commit will remain in the history as well.
# Add a new commit with the undo of...
What is “2's Complement”?
...to the point and also for explaining why the negative values have a larger range the positive ones. I came looking for the reason for the range difference.
– Ashwin
Dec 26 '14 at 5:22
...
Use numpy array in shared memory for multiprocessing
... step = N // 10
p.map_async(g, [slice(i, i + step) for i in range(stop_f, N, step)])
p.join()
assert np.allclose(((-1)**M)*tonumpyarray(shared_arr), arr_orig)
def init(shared_arr_):
global shared_arr
shared_arr = shared_arr_ # must be inherited, not passed as an argum...
How do you know when to use fold-left and when to use fold-right?
...ack up for large lists, while a foldLeft won't.
Example:
scala> List.range(1, 10000).foldLeft(0)(_ + _)
res1: Int = 49995000
scala> List.range(1, 10000).foldRight(0)(_ + _)
java.lang.StackOverflowError
at scala.List.foldRight(List.scala:1081)
at scala.List.foldRight(List.sc...
How to navigate through a vector using iterators? (C++)
...ata from an input stream, or that simply generates data on the fly (e.g. a range or random number generator).
Another option using std::for_each and lambdas:
sum = 0;
std::for_each(vec.begin(), vec.end(), [&sum](int i) { sum += i; });
Since C++11 you can use auto to avoid specifying a very l...
Apply multiple functions to multiple groupby columns
... b_mean=('b', 'mean'),
c_sum=('c', 'sum'),
d_range=('d', lambda x: x.max() - x.min())
)
a_sum a_mean b_mean c_sum d_range
group
0 0.947337 0.473668 0.871939 0.838150 0.320543
1 0.6041...