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unable to start mongodb local server
... 7:34pm 0:09.98 mongod
User 31945 0.0 0.0 2423368 184 s000 R+ 8:24pm 0:00.00 grep mongo
Now enter the kill command for the mongod instance (31936 in this case):
kill 31936
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List of Big-O for PHP functions
...r example the difference between a call to array_key_exists at N=1 and N=1,000,000 is ~50% time increase.
Interesting Points:
isset/array_key_exists is much faster than in_array and array_search
+(union) is a bit faster than array_merge (and looks nicer). But it does work differently so keep that...
The specified type member 'Date' is not supported in LINQ to Entities. Only initializers, entity mem
...e, DateTimeStart is of type DataType in this format 2013-01-30 12:00:00.000
10 Answers
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horizontal line and right way to code it in html, css
...s
.hline-bottom {
padding-bottom: 10px;
border-bottom: 2px solid #000; /* whichever color you prefer */
}
and use it like
<div class="block_1 hline-bottom">Cheese</div>
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What do 'real', 'user' and 'sys' mean in the output of time(1)?
... niters = strtoll(argv[1], NULL, 0);
} else {
niters = 1000000000;
}
if (argc > 2) {
nthreads = strtoll(argv[2], NULL, 0);
} else {
nthreads = 1;
}
threads = malloc(nthreads * sizeof(*threads));
thread_args = malloc(nthreads * sizeof(*thr...
Selecting only numeric columns from a data frame
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returns (on my computer) a median of 60 microseconds for Filter, and 21 000 microseconds for select_if (350x faster).
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CSS background-image - What is the correct usage?
...'t load or isn't available for some reason.
#elementID {
background: #000 url(images/slides/background.jpg) repeat-x top left;
}
Notice also that you can specify whether the image will repeat and in what direction (if you don't specify, the default is to repeat horizontally and vertically), a...
Which is the correct shorthand - “regex” or “regexp” [closed]
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Googlefight says regex wins, 685000 to 289000 (which is about 2.37:1).
Also, regexp is strange to say out loud because there are so few (if any?) words that end in a "-ksp" sound, but there are plenty of words that end in a "-ecks" sound.
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Expand a random range from 1–5 to 1–7
... pow5 *= 5
if __name__ == '__main__':
r7 = rand7_gen()
N = 10000
x = list(next(r7) for i in range(N))
distr = [x.count(i) for i in range(7)]
expmean = N / 7.0
expstddev = math.sqrt(N * (1.0/7.0) * (6.0/7.0))
print '%d TRIALS' % N
print 'Expected mean: %.1f' % ...
How do multiple clients connect simultaneously to one port, say 80, on a server? [duplicate]
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So if a server had say 1,000 simultaneous connections (I know that is high), it would have to contend with 1,000 threads!? That seems out of control. Or are fibers used (thread barreling).
– IamIC
Jul 25 '10 at ...