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Convert UNIX epoch to Date object
I'm plotting and performing calculations on uniformly distributed time series. The timestamps are currently stored as integers representing the number of seconds since the UNIX epoch (e.g. 1352068320 ), but Date objects seem more appropriate for plotting. How can I do the conversion?
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shared_ptr to an array : should it be used?
...r delete p, when T is not an array type, shall have well-defined behavior, and shall not throw exceptions.
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Remarks: When T is an array type, this constructor shall not participate in overload resolution unless the expression delete[] p is well-formed and either T is U[N] and Y(*)[N] is conve...
What specific productivity gains do Vim/Emacs provide over GUI text editors?
...ing configuration files while in my terminal), but I don't think I could stand it for my normal, every day work of writing web applications, which I do with a GUI text editor (which one isn't important).
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Is there a pattern for initializing objects created via a DI container
I am trying to get Unity to manage the creation of my objects and I want to have some initialization parameters that are not known until run-time:
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How do I deep copy a DateTime object?
Now $date1 and $date2 contain the same date -- three years from now. I'd like to create two separate datetimes, one which is parsed from a string and one with three years added to it. Currently I've hacked it up like this:
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Is there a 'foreach' function in Python 3?
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It's not map(), because map() accumulates and returns a list, while foreach() doesn't. The difference could be quite expensive if you're iterating over a long list of items. Agreed that for() does the trick.
– Canuck
Apr 8 '15 ...
$(window).scrollTop() vs. $(document).scrollTop()
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@d2burke scrollTop() is a getter and scrollTop(value) is a setter. scrollTop() without arguments does not change the scroll position.
– user1107907
Feb 19 '15 at 22:20
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How can I check whether a numpy array is empty or not?
...an always take a look at the .size attribute. It is defined as an integer, and is zero (0) when there are no elements in the array:
import numpy as np
a = np.array([])
if a.size == 0:
# Do something when `a` is empty
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How do I get elapsed time in milliseconds in Ruby?
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add a to_i and you have it as an integer, eg: ((finish - start) * 1000.0).to_i
– Travis Reeder
Dec 8 '10 at 6:14
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Why should I prefer to use member initialization lists?
... this case, the constructor for B will call the default constructor for A, and then initialize a.x to 3. A better way would be for B's constructor to directly call A's constructor in the initializer list:
B()
: a(3)
{
}
This would only call A's A(int) constructor and not its default constructo...