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Multiprocessing - Pipe vs Queue
...msg=='DONE':
break
def writer(count, p_input):
for ii in xrange(0, count):
p_input.send(ii) # Write 'count' numbers into the input pipe
p_input.send('DONE')
if __name__=='__main__':
for count in [10**4, 10**5, 10**6]:
# Pipes are unidirectional w...
How to remove gaps between subplots in matplotlib?
...date(wspace=0.025, hspace=0.05) # set the spacing between axes.
for i in range(16):
# i = i + 1 # grid spec indexes from 0
ax1 = plt.subplot(gs1[i])
plt.axis('on')
ax1.set_xticklabels([])
ax1.set_yticklabels([])
ax1.set_aspect('equal')
plt.show()
...
Fast check for NaN in NumPy
...a n: numpy.random.rand(n),
kernels=[min, sum, dot, any, einsum],
n_range=[2 ** k for k in range(20)],
logx=True,
logy=True,
xlabel="len(a)",
)
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...
Better techniques for trimming leading zeros in SQL Server?
...unately, only works for numeric data, and sometimes the strings exceed the range for integer as well, so you'd have to use bigint.
– Cade Roux
Mar 19 '09 at 14:40
3
...
What is the difference between Left, Right, Outer and Inner Joins?
...h 10 rows, each holding values '0' through '9'. You want to create a date range table to join against, so that you end up with one record for each day within the range. By CROSS-joining this table with itself repeatedly you can create as many consecutive integers as you need (given you start at 10...
Convert pandas timezone-aware DateTimeIndex to naive timestamp, but in certain timezone
...handling-improvements
So with my example from above:
In [4]: t = pd.date_range(start="2013-05-18 12:00:00", periods=2, freq='H',
tz= "Europe/Brussels")
In [5]: t
Out[5]: DatetimeIndex(['2013-05-18 12:00:00+02:00', '2013-05-18 13:00:00+02:00'],
dtyp...
Listing all permutations of a string/integer
...able<IEnumerable<int>> result =
GetPermutations(Enumerable.Range(1, 3), 3);
Output - a list of integer-lists:
{1,2,3} {1,3,2} {2,1,3} {2,3,1} {3,1,2} {3,2,1}
As this function uses LINQ so it requires .net 3.5 or higher.
...
When should you use constexpr capability in C++11?
...correct answer, since recent changes in C++14 and C++17 allow a much wider range of the language to be used in constexpr expressions. In other words, pretty much anything can be annotated constexpr (maybe one day it will simply just go away because of this?), and unless one has a criterion of when t...
Differences and relationship between glActiveTexture and glBindTexture
...31. But there's one thing you must understand:
THIS IS FALSE!
The actual range that glActiveTexture can take is governed by GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS. That is the maximum number of simultaneous multitextures that an implementation allows. These are each divided up into different grouping...
Reading binary file and looping over each byte
...b.Path(path)
pathobj.write_bytes(
bytes(random.randint(0, 255) for _ in range(2**20)))
Now let's iterate over it and materialize it in memory:
>>> l = list(file_byte_iterator(path))
>>> len(l)
1048576
We can inspect any part of the data, for example, the last 100 and first...