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Python memory usage of numpy arrays
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You can use array.nbytes for numpy arrays, for example:
>>> import numpy as np
>>> from sys import getsizeof
>>> a = [0] * 1024
>>> b = np.array(a)
>>> getsizeof(a)
8264
>>> b.nbytes
8192
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lock(new object()) — Cargo cult or some crazy “language special case”?
I'm reviewing some code written by a consultant, and while dozens of red flags have already popped up, I can't wrap my head around the following snippet:
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“Ago” date/time functions in Ruby/Rails
... answered Jul 19 '10 at 7:05
Toby HedeToby Hede
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What is included in JCenter repository in Gradle?
...ter is the place to find and share popular Apache Maven packages
for use by Maven, Gradle, Ivy, SBT, etc. For the most comprehensive
collection of artifacts, point your Maven at:
http://jcenter.bintray.com Want to distribute your own packages
through JCenter? You can link your package by cli...
How to list running screen sessions?
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The -S option is great, as it also lets you resume by that session name: screen -rd <sessionname>
– jorisw
May 16 at 9:15
add a comment
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A method to reverse effect of java String.split()? [duplicate]
...s) {
// Join all Strings in the Array into a Single String, separated by $#$
System.out.println("7) Join Strings using separator >>>"
+ StringUtils.join(new String[] { "AB", "CD", "EF" }, "$#$"));
}
}
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How can I convert a file pointer ( FILE* fp ) to a file descriptor (int fd)?
I have a FILE * , returned by a call to fopen() . I need to get a file descriptor from it, to make calls like fsync(fd) on it. What's the function to get a file descriptor from a file pointer?
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How to copy directories in OS X 10.7.3?
...the same mode as the corresponding source directory, unmodified by the process' umask.
– Xiao
Oct 1 '14 at 5:40
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Can't use modulus on doubles?
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Big O of JavaScript arrays
Arrays in JavaScript are very easy to modify by adding and removing items. It somewhat masks the fact that most languages arrays are fixed-size, and require complex operations to resize. It seems that JavaScript makes it easy to write poorly performing array code. This leads to the question:
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