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What integer hash function are good that accepts an integer hash key?
...turn x;
}
The magic number was calculated using a special multi-threaded test program that ran for many hours, which calculates the avalanche effect (the number of output bits that change if a single input bit is changed; should be nearly 16 on average), independence of output bit changes (output ...
Ignore mouse interaction on overlay image
... Yup -- This is the good stuff. It also works in suppressing hit-testing for elements with no backgrounds set that are being used as containers for other items (that you actually do want to hit-test.)
– Armentage
Feb 8 '12 at 5:22
...
Where can I learn how to write C code to speed up slow R functions? [closed]
...as hundreds of packages, some from authors you trust. That provides real, tested examples to study and adapt.
But as Josh suspected, I lean more towards C++ and hence Rcpp. It also has plenty of examples.
Edit: There were two books I found helpful:
The first one is Venables and Ripley's "S Prog...
“The given path's format is not supported.”
...e properties security tab.
var yourJson = System.IO.File.ReadAllText(@"D:\test\json.txt"); // Works
var yourJson = System.IO.File.ReadAllText(@"D:\test\json.txt"); // Error
So those, identical at first glance, two lines are actually different.
...
Convert Iterator to ArrayList
... ArrayList<Element> (or List<Element> ) in the best and fastest way possible, so that we can use ArrayList 's operations on it such as get(index) , add(element) , etc.
...
Easiest way to compare arrays in C#
...) == array2.Count() && !array1.Except(array2).Any();
}
}
The test code looks like:
class Program
{
static void Main(string[] args)
{
int[] a1 = new int[] { 1, 2, 3 };
int[] a2 = new int[] { 3, 2, 1 };
int[] a3 = new int[] { 1, 3 };
int[] a4 = nu...
What is the most pythonic way to check if an object is a number?
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Use Number from the numbers module to test isinstance(n, Number) (available since 2.6).
>>> from numbers import Number
... from decimal import Decimal
... from fractions import Fraction
... for n in [2, 2.0, Decimal('2.0'), complex(2, 0), Fraction(2, 1)...
force Maven to copy dependencies into target/lib
...
This is fine, but it is copying test dependencies too. I add to myself the excludeScope option (maven.apache.org/plugins/maven-dependency-plugin/…).
– Alfonso Nishikawa
Aug 9 '13 at 8:44
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How do I fix a NoSuchMethodError?
...ethod signature.
In my experience, this comes up occasionally when unit testing private methods/fields, and using a TestUtilities class to extract fields for test verification. (Generally with legacy code that wasn't designed with unit testing in mind.)
...
Is assert evil? [closed]
...oing it on every single invocation of the routine.
You still have to unit-test your production code, but that's a different, and complementary, way of making sure your code is correct. Unit tests make sure your routine lives up to its interface, while assertions are a finer-grained way to make sure...