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Purge or recreate a Ruby on Rails database
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Someone should make clear that rake db:reset and rake db:drop db:create db:migrate do two whole different things. The latter wipes out the whole app database, recreates it and then goes through every migration to update the schem...
Confusion about vim folding - how to disable?
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You're not alone.
set nofoldenable " disable folding
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Unable to generate an explicit migration in entity framework
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Thomas's answer was the useful one for my similar case.
– Tarek Shawadfy
Dec 2 '15 at 10:36
2
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In C++, is it still bad practice to return a vector from a function?
... scenarios. They have downsides with multithreading, though.
(I wish just one answer in C++ would be simple and straightforward and without conditions).
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How can I have a newline in a string in sh?
...ight-bit character whose value is the octal value
nnn (one to three digits)
\xHH the eight-bit character whose value is the hexadecimal
value HH (one or two hex digits)
\cx a control-x character
The expanded result is single-quoted...
Check if a Bash array contains a value
...ain value
fi
Note that in cases where the value you are searching for is one of the words in an array element with spaces, it will give false positives. For example
array=("Jack Brown")
value="Jack"
The regex will see "Jack" as being in the array even though it isn't. So you'll have to change...
How to calculate a logistic sigmoid function in Python?
...1344091512
Update: Note that the above was mainly intended as a straight one-to-one translation of the given expression into Python code. It is not tested or known to be a numerically sound implementation. If you know you need a very robust implementation, I'm sure there are others where people ha...
Pythonic way to combine FOR loop and IF statement
...n and/or calling out to a well-named function. Trying to fit everything on one line is rarely "Pythonic".
Update following additional comments on your question and the accepted answer
I'm not sure what you are trying to do with enumerate, but if a is a dictionary, you probably want to use the ke...
What is a daemon thread in Java?
... while @sateesh says that "JVM halts any remaining daemon threads are abandoned". So do daemon threads finish running when JVM exits?
– Gerald
Oct 16 '15 at 3:09
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Behaviour of final static method
...l hide it. If you call ts() in B (NOT A.ts() or B.ts() ... just ts()), the one of B will be called and not A. Since this is not subjected to polymorphism, the call ts() in A will never be redirected to the one in B.
The keyword final will disable the method from being hidden. So they cannot be hidd...