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Show the progress of a Python multiprocessing pool imap_unordered call?
...port division
import sys
for i, _ in enumerate(p.imap_unordered(do_work, xrange(num_tasks)), 1):
sys.stderr.write('\rdone {0:%}'.format(i/num_tasks))
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SQLAlchemy: how to filter date field?
... func.date(User.birthday) <= '1988-01-17'))
That means range: 1985-01-17 00:00 - 1988-01-17 23:59
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What's the most efficient way to erase duplicates and sort a vector?
...) );
I did the test with a vector of 100,000,000 ints chosen randomly in ranges [1,10], [1,1000], and [1,100000]
The results (in seconds, smaller is better):
range f1 f2 f3 f4 f5
[1,10] 1.6821 7.6804 2.8232 6.2634 0.7980
[1,1000] 5.0773 13.3658 8....
C# Lambda expressions: Why should I use them?
...e they are:
// anonymous delegate
var evens = Enumerable
.Range(1, 100)
.Where(delegate(int x) { return (x % 2) == 0; })
.ToList();
// lambda expression
var evens = Enumerable
.Range(1, 100)
.Where(x => (x % 2) == 0...
SQL Server Regular expressions in T-SQL
...s.
_ Any single character.
[ ] Any single character within the specified range
(for example, [a-f]) or set (for example, [abcdef]).
[^] Any single character not within the specified range
(for example, [^a - f]) or set (for example, [^abcdef]).
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YouTube API to fetch all videos on a channel
...de.google.com/p/gdata-issues/issues/detail?id=4282 Trying with a different range of dates is one way to get more videos it seems.
– Raja
Oct 23 '16 at 2:06
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Removing trailing newline character from fgets() input
...\0';
else
/* input too long for buffer, flag error */
The slightly strange way:
strtok(Name, "\n");
Note that the strtok function doesn't work as expected if the user enters an empty string (i.e. presses only Enter). It leaves the \n character intact.
There are others as well, of course.
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How to Detect if I'm Compiling Code with a particular Visual Studio version?
...an be found here. Starting recently, Visual Studio will start updating its ranges monotonically, meaning you should check ranges, rather than exact compiler values.
cl.exe /? will give a hint of the used version, e.g.:
c:\program files (x86)\microsoft visual studio 11.0\vc\bin>cl /?
Microsoft (...
Numpy how to iterate over columns of array?
...
This should give you a start
>>> for col in range(arr.shape[1]):
some_function(arr[:,col])
[1 2 3 4]
[99 14 12 43]
[2 5 7 1]
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Outputting data from unit test in python
...ctions(unittest.TestCase):
... def setUp(self):
... self.seq = range(5)
... def testshuffle(self):
... # make sure the shuffled sequence does not lose any elements
... random.shuffle(self.seq)
... self.seq.sort()
... self.assertEqual(self.seq, range(10...