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Use of Initializers vs Constructors in Java
So I've been brushing up on my Java skills as of late and have found a few bits of functionality that I didn't know about previously. Static and Instance Initializers are two such techniques.
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How can I reorder a list? [closed]
If I have a list [a,b,c,d,e] how can I reorder the items in an arbitrary manner like [d,c,a,b,e] ?
12 Answers
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Why is === faster than == in PHP?
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Because the equality operator == coerces, or converts, the data type temporarily to see if it’s equal to the other operand, whereas === (the identity operator) doesn’t need to do any converting whatsoever and thus less w...
Why does SIGPIPE exist?
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I don't buy the previously-accepted answer. SIGPIPE is generated exactly when the write fails with EPIPE, not beforehand - in fact one safe way to avoid SIGPIPE without changing global signal dispositions is to temporarily mask it wi...
Can someone explain the right way to use SBT?
I'm getting out off the closet on this! I don't understand SBT. There, I said it, now help me please.
4 Answers
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C++11 emplace_back on vector?
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For anyone from the future, this behavior will be changed in C++20.
In other words, even though implementation internally will still call T(arg0, arg1, ...) it will be considered as regular T{arg0, arg1, ...} that you would expect.
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Macro vs Function in C
I always saw examples and cases where using a macro is better than using function.
11 Answers
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When to use LinkedList over ArrayList in Java?
I've always been one to simply use:
33 Answers
33
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how do I insert a column at a specific column index in pandas?
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see docs: http://pandas.pydata.org/pandas-docs/stable/generated/pandas.DataFrame.insert.html
using loc = 0 will insert at the beginning
df.insert(loc, column, value)
df = pd.DataFrame({'B': [1, 2, 3], 'C': [4, 5, 6]})
df
Out:
B C
0 1 4
1 2 5
2 3 6
idx = 0
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App restarts rather than resumes
...e can help me figure out, if not a solution, at least an explanation for a behaviour.
9 Answers
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