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What is a “surrogate pair” in Java?
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The term "surrogate pair" refers to a means of encoding Unicode characters with high code-poin...
What is the best way to conditionally apply a class?
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1385
If you don't want to put CSS class names into Controller like I do, here is an old trick that...
Converting a JS object to an array using jQuery
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18 Answers
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Specify width in *characters*
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1em is the height of an M, rather than the width. Same holds for ex, which is the height of an x. More generally speaking, these are the heights of uppercase and lowercase letters.
Width is a totally different issue....
Cha...
Java HashMap performance optimization / alternative
...around 20,000 codes for 26 million distinct objects. That is an average of 1,300 objects per hash bucket = very very bad. However if I turn the two arrays into a number in base 52 I am guaranteed to get a unique hash code for every object:
public int hashCode() {
// assume that both a an...
Swift Beta performance: sorting arrays
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461
tl;dr Swift 1.0 is now as fast as C by this benchmark using the default release optimisation lev...
Generate a random double in a range
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241
To generate a random value between rangeMin and rangeMax:
Random r = new Random();
double rando...
Is there StartsWith or Contains in t sql with variables?
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StartsWith
a) left(@edition, 15) = 'Express Edition'
b) charindex('Express Edition', @edition...
What is the 'pythonic' equivalent to the 'fold' function from functional programming?
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The Pythonic way of summing an array is using sum. For other purposes, you can sometimes use s...