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What is the fastest integer division supporting division by zero no matter what the result is?
... turned out to be such a popular question and answer, I'll elaborate a bit more. The above example is based on programming idiom that a compiler recognizes. In the above case a boolean expression is used in integral arithmetic and the use of condition flags are invented in hardware for this purpose....
How do I get the last four characters from a string in C#?
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+1 because i think yours is slightly more readable than @dtb's
– George Duckett
Jun 20 '11 at 15:29
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What exactly is Arel in Rails 3.0?
...e?
Yes. For example, as I mentioned above, it is much easier to construct more complex queries from simpler parts.
will it lead to more efficient SQL queries?
Yes. The fact that ARel has a proper object model for the queries means that it can perform optimizations on those queries long before it ...
Ignore outliers in ggplot2 boxplot
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Why should we typedef a struct so often in C?
... keystrokes, it also can make the code cleaner since it provides a smidgen more abstraction.
Stuff like
typedef struct {
int x, y;
} Point;
Point point_new(int x, int y)
{
Point a;
a.x = x;
a.y = y;
return a;
}
becomes cleaner when you don't need to see the "struct" keyword all over t...
Should I always use a parallel stream when possible?
..., adding an additional layer of parallelism inside each request could have more negative than positive effects)
In your example, the performance will anyway be driven by the synchronized access to System.out.println(), and making this process parallel will have no effect, or even a negative one.
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What is the reason why “synchronized” is not allowed in Java 8 interface methods?
...ds are entirely a syntactic optimization; they're not needed, they're just more compact than the corresponding synchronized block. There's a reasonable argument to be made that this was a premature syntactic optimization in the first place, and that synchronized methods cause more problems than the...
jQuery: Get selected element tag name
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