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What is std::move(), and when should it be used?
...is a cast that produces an rvalue-reference to an object, to enable moving from it.
It's a new C++ way to avoid copies. For example, using a move constructor, a std::vector could just copy its internal pointer to data to the new object, leaving the moved object in an moved from state, therefore no...
When to use self over $this?
...e Y, it calls Y::foo(). But with self::foo(), X::foo() is always called.
From http://www.phpbuilder.com/board/showthread.php?t=10354489:
By http://board.phpbuilder.com/member.php?145249-laserlight
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Evenly distributing n points on a sphere
...the kth node. You are generating an array N points and node[k] is the kth (from 0 to N-1). If that is all that is confusing you, hopefully you can use that now.
(in other words, k is an array of size N that is defined before the code fragment starts, and which contains a list of the points).
Alter...
How can I return to a parent activity correctly?
... activities (A and B) in my android application and I use an intent to get from activity A to activity B. The use of parent_activity is enabled:
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Difference between Pig and Hive? Why have both? [closed]
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Check out this post from Alan Gates, Pig architect at Yahoo!, that compares when would use a SQL like Hive rather than Pig. He makes a very convincing case as to the usefulness of a procedural language like Pig (vs. declarative SQL) and its uti...
Getting Spring Application Context
...irkby Using the singleton pattern means instanciating your container class from a static method within your container class... once you "manually" instanciate an object it is not managed by Spring anymore : how did you tackle this problem ?
– Antonin
Oct 16 '17...
Generate a heatmap in MatPlotLib using a scatter data set
...r see this question stackoverflow.com/questions/17201172/… and simply do from matplotlib.colors import LogNorm plt.imshow(heatmap, norm=LogNorm()) plt.colorbar()
– tommy.carstensen
Mar 16 '15 at 20:25
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Extending an Object in Javascript
I am currently transforming from Java to Javascript, and it's a bit hard for me to figure out how to extend objects the way I want it to do.
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from list of integers, get number closest to a given value
...uilt-in min() function, to find the element which has the minimum distance from the specified number.
>>> min(myList, key=lambda x:abs(x-myNumber))
4
Note that it also works with dicts with int keys, like {1: "a", 2: "b"}. This method takes O(n) time.
If the list is already sorted, or...
Access event to call preventdefault from custom function originating from onclick attribute of tag
...commended as it will also prevent all other event handlers on that element from running, and stop the event from bubbling up to higher elements.
– Stijn de Witt
Nov 6 '15 at 13:22
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