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Most pythonic way to delete a file which may not exist
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13 Answers
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Active
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How to list npm user-installed packages?
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1305
This works pretty well too: npm list -g --depth=0
npm: the Node package manager command line...
Working with huge files in VIM
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Edit SMALLPART using your favourite editor.
Combine the file:
(head -n 3 HUGEFILE; cat SMALLPART; sed -e '1,5d' HUGEFILE) > HUGEFILE.new
i.e: pick all the lines before the edited lines from the HUGEFILE (which in this case is the top 3 lines), combine it with the edited lines (in this cas...
Regular Expressions- Match Anything
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310
Normally the dot matches any character except newlines.
So if .* isn't working, set the "dot...
How to access the ith column of a NumPy multidimensional array?
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>>> test[:,0]
array([1, 3, 5])
Similarly,
>>> test[1,:]
array([3, 4])
lets you access rows. This is covered in Section 1.4 (Indexing) of the NumPy reference. This is quick, at least in my experience. It's certainly much quicker tha...
Is there a foreach in MATLAB? If so, how does it behave if the underlying data changes?
...in other languages. This means that the following code always prints 1, 2, 3, 4, 5 regardless of the value of B.
A = 1:5;
for i = A
A = B;
disp(i);
end
If you want to be able to respond to changes in the data structure during iterations, a WHILE loop may be more appropriate --- you'll be...
How can I detect if a selector returns null?
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edited Jun 23 '11 at 5:43
answered May 28 '09 at 11:10
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Django Template Variables and Javascript
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303
The {{variable}} is substituted directly into the HTML. Do a view source; it isn't a "variable...
Should we @Override an interface's method implementation?
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308
You should use @Override whenever possible. It prevents simple mistakes from being made. Exa...