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Storing JSON in database vs. having a new column for each key
...a types and the support in PostgreSQL was in its infancy. Since 5.7, MySQL now supports a JSON data type (in a binary storage format), and PostgreSQL JSONB has matured significantly. Both products provide performant JSON types that can store arbitrary documents, including support for indexing specif...
in Ipython notebook / Jupyter, Pandas is not displaying the graph I try to plot
... The recommended way to enable inline plotting in the IPython Notebook is now to run:
%matplotlib inline
import matplotlib.pyplot as plt
See this post from the ipython-dev mailing list for more details.
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Error 1046 No database Selected, how to resolve?
... in SQL file. Can you please clarify that once more. I am having the issue now.
– Rahul S
Jul 15 '15 at 5:02
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Codeigniter - no input file specified
...s inside my public_html folder back to original .htaccess content. So it's now as follows (which is originally it was):
DirectoryIndex index.php
RewriteEngine on
RewriteCond $1 !^(index\.php|images|css|js|robots\.txt|favicon\.ico)
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !...
Replacing a fragment with another fragment inside activity group
...ly cannot replace a fragment, but rather you can manually remove the views now present in the container and put a fragment there instead if required.
– Subin Sebastian
Dec 21 '15 at 6:40
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How do I print the type of a variable in Rust?
... used to be as simple as 32.90.eq(&32.90), but that treats both as f64 now and chugs along happily, so I don’t know.
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Why does UITableViewCell remain highlighted?
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I wonder what people are doing now that iOS 7 allows the user to 'drag' back. Partially dragging but then not completing the action will fire viewWillAppear. When the user returns for real, the row will not be selected.
– Ben Packard
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What does “./bin/www” do in Express 4.x?
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Because the app.js file that was generated by the Express 4 generator is now a Node.js module, it can no longer be started independently as an app (unless you modify the code). The module must be loaded in a Node.js file and started via the Node.js file. The Node.js file is ./bin/www in this case....
throwing exceptions out of a destructor
...tic approximation of finally, see the various scope_guard implementations. Nowadays, with the machinery in place (even in the standard, is it C++14?) to detect whether the dtor is allowed to throw, it can even be made totally safe.
– Martin Ba
Dec 1 '15 at 11:0...
What key shortcuts are to comment and uncomment code?
...ss that these are the defaults, at least in the C++ defaults, but I don't know for sure. The best way to find out is to check your settings.)
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