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Combine two ActiveRecord::Relation objects
...ed).where(id: [6, 7])
current_user.posts.union("published_at < ?", Time.now)
user_1.posts.union(user_2.posts).union(Post.published)
user_1.posts.union_all(user_2.posts)
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Using sed to mass rename files
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you've had your sed explanation, now you can use just the shell, no need external commands
for file in F0000*
do
echo mv "$file" "${file/#F0000/F000}"
# ${file/#F0000/F000} means replace the pattern that starts at beginning of string
done
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How can I make Flexbox children 100% height of their parent?
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I have answered a similar question here.
I know you have already said position: absolute; is inconvenient, but it works. See below for further information on fixing the resize issue.
Also see this jsFiddle for a demo, although I have only added WebKit prefixes so open ...
Manipulate a url string by adding GET parameters
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This approach is good when you know that 'category' parameter is not already in the URL. If the parameter is in a URL already then PHP should take the value of the last occurrence of the parameter in the URL, so the solution of @andrewtweber still works. Ye...
np.mean() vs np.average() in Python NumPy?
... already noted, there's another extremely important difference that I just now discovered the hard way: unlike np.mean, np.average doesn't allow the dtype keyword, which is essential for getting correct results in some cases. I have a very large single-precision array that is accessed from an h5 f...
How to Set focus to first text input in a bootstrap modal after shown
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great, quick reponse! I made a silly error, works now!
– Ramesh Pareek
Apr 19 '16 at 11:29
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Convert a list to a dictionary in Python
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… or simply zip(i, i), in Python 3, since zip() now returns an iterator.
– Eric O Lebigot
Jan 2 '11 at 0:07
5
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CMake not able to find OpenSSL library
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This is now very out of date and probably dangerous to use. The openssl website has links to 2 sites that provide binaries. That's seems to be the problem with security related libs like this. However, setting the values like th...
Is there a fixed sized queue which removes excessive elements?
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UPDATE There are now two such classes available. No need to write your own. See my answer on this page.
– Basil Bourque
Feb 11 '14 at 10:22
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pip broke. how to fix DistributionNotFound error?
...ich probably caused me this headache.
I think this is how you should do it nowadays..
$ sudo apt-get install python-pip python-dev build-essential
$ sudo pip install --upgrade pip
$ sudo pip install --upgrade virtualenv
...