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Looping through the content of a file in Bash
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rogerdpack
46.2k3030 gold badges200200 silver badges315315 bronze badges
answered Oct 5 '09 at 18:00
Bruno De Fr...
RVM is not a function, selecting rubies with 'rvm use …' will not work
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243
Your console is not running as a login shell and hence have no access to rvm function. If you a...
Removing all empty elements from a hash / YAML?
... Please note that compact and compact! come standard in Ruby => 2.4.0, and Rails => 4.1. They are non-recursive though.
– aidan
Nov 21 '17 at 5:21
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Why is there no xrange function in Python3?
...timeit instead of trying to do it manually with time.
First, Apple 2.7.2 64-bit:
In [37]: %timeit collections.deque((x for x in xrange(10000000) if x%4 == 0), maxlen=0)
1 loops, best of 3: 1.05 s per loop
Now, python.org 3.3.0 64-bit:
In [83]: %timeit collections.deque((x for x in range(1000000...
Multidimensional Array [][] vs [,] [duplicate]
...10];
x[1] = new double[5];
x[2] = new double[3];
x[3] = new double[100];
x[4] = new double[1];
Because each entry in the array is a reference to an array of double. With a jagged array, you can do an assignment to an array like you want in your second example:
x[0] = new double[13];
On the seco...
Xcode 4 says “finished running ” on the targeted device — Nothing happens
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For those reading this in regards to Xcode 4.2, and attempting to run on an earlier device (e.g. iPhone 3G, 2G, iPod 1st gen, etc) I have another solution. New projects created in Xcode 4.2 by default specify 'armv7' in the 'Required Device Capabilities'. You'll need...
How do I get current date/time on the Windows command line in a suitable format for usage in a file/
... with using date . See @npocmaka's https://stackoverflow.com/a/19799236/8479
28 Answers
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Determine what attributes were changed in Rails after_save callback?
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Aaron Brager
60.7k1616 gold badges143143 silver badges255255 bronze badges
answered Oct 5 '10 at 8:09
Radek PavienskyRadek Paviensky
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How to write LaTeX in IPython Notebook?
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edited Jun 18 '14 at 12:36
katahdin
34955 silver badges1616 bronze badges
answered May 21 '13 ...