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In Python, how do I iterate over a dictionary in sorted key order?
...ems() creates a list and therefore uses memory, whereas iteritems() essentially does not use memory. What to use mostly depend on the size of the dictionary. Furthermore, the automatic Python 2 to Python 3 conversion tool (2to3) automatically takes care of the conversion from iteritems() to items(),...
Is it possible to simulate key press events programmatically?
Is it possible to simulate key press events programmatically in JavaScript?
23 Answers
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How do I remove repeated elements from ArrayList?
...es in a Collection, you should consider why you're using a Collection that allows duplicates. The easiest way to remove repeated elements is to add the contents to a Set (which will not allow duplicates) and then add the Set back to the ArrayList:
Set<String> set = new HashSet<>(yourLis...
How to find an available port?
...gain, and then open one again on the free port (by which time there is a small chance something else is now listening on that port.)
– Graham Edgecombe
Sep 4 '12 at 12:49
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How can I make my custom objects Parcelable?
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Do I have to actually implement the encoding/decoding parts if I only send them using LocalBroadcastManager? Is it enough to implement Parcelable and put as extra?
– JohnyTex
Feb 3 '16 at 13:29
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Best way to convert string to bytes in Python 3?
...ferent ways:
If it is a string, you must also give the encoding (and optionally, errors) parameters; bytearray() then converts the string to bytes using str.encode().
If it is an integer, the array will have that size and will be initialized with null bytes.
If it is an object conforming to the buff...
How can I get the max (or min) value in a vector?
... Yes you can. The standard library algorithms have been designed to generically work on iterators. Pointers are iterators too.
– sehe
Aug 14 '14 at 9:48
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How do I add a simple onClick event handler to a canvas element?
... attaches a click event to the canvas element, and then pushes one shape (called an element in my code) to an elements array. You could add as many as you wish here.
The purpose of creating an array of objects is so we can query their properties later. After all the elements have been pushed onto t...
Plotting two variables as lines using ggplot2 on the same graph
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For a small number of variables, you can build the plot manually yourself:
ggplot(test_data, aes(date)) +
geom_line(aes(y = var0, colour = "var0")) +
geom_line(aes(y = var1, colour = "var1"))
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Mongod complains that there is no /data/db folder
...ere you can create the data directory in another location, but that's generally not a good idea, because it just slightly complicates things such as DB recovery, because you always have to specify the db-path manually. I wouldn't recommend doing that.
Edit:
the error message you're getting is ...