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How to delete or add column in SQLITE?
...og, you can see more explanations there:
http://udinic.wordpress.com/2012/05/09/sqlite-drop-column-support/
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Rails 3 execute custom sql query without a model
...nAdapters/…
– lee
Oct 4 '14 at 18:05
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How to get GET (query string) variables in Express.js on Node.js?
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edited May 4 '15 at 12:05
Peter Mortensen
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Find rows that have the same value on a column in MySQL
In a [member] table, some rows have the same value for the email column.
8 Answers
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Cluster analysis in R: determine the optimal number of clusters
...1)*i^2))))
plot(d)
One. Look for a bend or elbow in the sum of squared error (SSE) scree plot. See http://www.statmethods.net/advstats/cluster.html & http://www.mattpeeples.net/kmeans.html for more. The location of the elbow in the resulting plot suggests a suitable number of clusters for th...
Objective-C : BOOL vs bool
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the compiler will raise an error if you use bool as a parameter of a block that is defined to get a BOOL (UIView animation blocks, e.g.), when you compile for iOS 32 bits (iPhone 5C...). I use C++ bool everywhere in my code, and BOOL in the APIs that a...
www-data permissions?
So I have a directory in /var/www (called cake) and I need to allow www-data to write to it, but I also want to write to it (without having to use sudo). I'm afraid to change the permissions to 777 in case some other user on my machine (or a hacker) attempts to modify files in that directory. How do...
How to inflate one view with a layout
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I get an error: 02-25 22:21:19.324: ERROR/AndroidRuntime(865): Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
– Micha...
How can I check for Python version in a program that uses new language features?
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You can test using eval:
try:
eval("1 if True else 2")
except SyntaxError:
# doesn't have ternary
Also, with is available in Python 2.5, just add from __future__ import with_statement.
EDIT: to get control early enough, you could split it into different .py files and check compatibility ...
Where does the .gitignore file belong?
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– Behrooz Karjoo
May 11 '18 at 14:05
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