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numpy: most efficient frequency counts for unique values in an array
...count:
http://docs.scipy.org/doc/numpy/reference/generated/numpy.bincount.html
import numpy as np
x = np.array([1,1,1,2,2,2,5,25,1,1])
y = np.bincount(x)
ii = np.nonzero(y)[0]
And then:
zip(ii,y[ii])
# [(1, 5), (2, 3), (5, 1), (25, 1)]
or:
np.vstack((ii,y[ii])).T
# array([[ 1, 5],
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Git blame — prior commits?
...1 from the relative file paths. 1
For example:
git blame master -- index.html
Full credit to Amber for knowing all the things! :)
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How to install Boost on Ubuntu
...via apt-get you can get this from boost.org/users/history/version_1_60_0.html and then expand it. Follow the excellent instructions above, remembering that LD Library Path is not the same as $PATH
– Andrew Killen
May 2 '17 at 10:51
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What is trunk, branch and tag in Subversion? [duplicate]
...f the repository, usually things like "this was released as 1.0".
See the HTML version of "Version Control with Subversion", especially Chapter 4: Branching and Merging or buy it in paper (e.g. from amazon) for an in-depth discussion of the technical details.
As others (e.g. Peter Neubauer below) ...
Override and reset CSS style: auto or none don't work
...ipt to perfect everything.
My JS fiddle: https://jsfiddle.net/QEpJH/612/
HTML:
<div class="container">
<img src="http://placekitten.com/240/300">
</div>
<h3 style="clear: both;">Full Size Image - For Reference</h3>
<img src="http://placekitten.com/240/300">...
Add timestamps to an existing table
...
http://api.rubyonrails.org/classes/ActiveRecord/ConnectionAdapters/Table.html
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How to make input type= file Should accept only pdf and xls
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you can use this:
HTML
<input name="userfile" type="file" accept="application/pdf, application/vnd.ms-excel" />
support only .PDF and .XLS files
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Measuring elapsed time with the Time module
...ime() when measuring timeouts or durations. docs.python.org/3/library/time.html#time.monotonic
– Debilski
May 18 '15 at 21:53
41
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Advantages of using prototype, vs defining methods straight in the constructor? [duplicate]
...s that show how method definition via prototype decrease the total size of html page and as a result a speed of its loading.
another advantage of methods, defined via prototype - is when you use inherited classes, you may override such methods and in the overriden method of the derived class you may...
Add vertical whitespace using Twitter Bootstrap?
...al (and convenient), but if you squint hard enough to ignore all the extra HTML, you can derive semantics from it. Vertical spacing is purely presentational, so I think it's best done with a custom class/ID.
– jmdeldin
Sep 6 '12 at 23:34
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