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vertical & horizontal lines in matplotlib
...rtical lines at specified limits. I would like to bound the data by this box. However, the sides do not seem to comply with my instructions. Why is this?
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Practical uses for AtomicInteger
...tion (compareAndSet()) to implement non-blocking algorithms.
Here is an example of non-blocking random number generator from Brian Göetz's Java Concurrency In Practice:
public class AtomicPseudoRandom extends PseudoRandom {
private AtomicInteger seed;
AtomicPseudoRandom(int seed) {
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How to ignore xargs commands if stdin input is empty?
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For GNU xargs, you can use the -r or --no-run-if-empty option:
--no-run-if-empty
-r If the standard input does not contain any nonblanks, do not run the command. Normally, the command is run once even if there is n...
The best way to remove duplicate values from NSMutableArray in Objective-C?
...nswer below in 2009; in 2011, Apple added NSOrderedSet to iOS 5 and Mac OS X 10.7. What had been an algorithm is now two lines of code:
NSOrderedSet *orderedSet = [NSOrderedSet orderedSetWithArray:yourArray];
NSArray *arrayWithoutDuplicates = [orderedSet array];
If you are worried about the ord...
design a stack such that getMinimum( ) should be O(1)
... solution which doesn't do that though, without wrecking the runtime complexity somewhere (e.g. making push/pop O(n)). Note that this doesn't change the complexity of the space required, e.g. if you've got a stack with O(n) space requirements, this will still be O(n) just with a different constant f...
Is there any way I can define a variable in LaTeX?
In LaTeX, how can I define a string variable whose content is used instead of the variable in the compiled PDF?
5 Answers
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How do I calculate percentiles with python/numpy?
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By now, a percentile function exists in numpy: docs.scipy.org/doc/numpy/reference/generated/…
– Anaphory
Oct 29 '13 at 14:36
1
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C pointer to array/array of pointers disambiguation
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The general rule is operator precedence. It can get even much more complex as function pointers come into the picture.
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How to search a specific value in all tables (PostgreSQL)?
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If you want to grep text data (which is typically encoded in more recent versions of postgres), you may need to ALTER DATABASE your_db_name SET bytea_output = 'escape'; on the database (or a copy thereof) before dumping it. (I'm not seeing a way t...
Best way to randomize an array with .NET
...oolness:
Random rnd=new Random();
string[] MyRandomArray = MyArray.OrderBy(x => rnd.Next()).ToArray();
Edit: and here's the corresponding VB.NET code:
Dim rnd As New System.Random
Dim MyRandomArray = MyArray.OrderBy(Function() rnd.Next()).ToArray()
Second edit, in response to remarks that S...