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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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How can I wait In Node.js (JavaScript)? l need to pause for a period of time
...roposal is in stage 3.
You can use it today by using webpack 5 (alpha),
More info:
Harmony Flag in Nodejs: https://nodejs.org/en/docs/es6/
All NodeJS Version for download: https://nodejs.org/en/download/releases/
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Among $_REQUEST, $_GET and $_POST which one is the fastest?
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$_REQUEST is supposedly (or at least used to be) more expensive than using $_POST and $_GET directly.
– Darrell Brogdon
Dec 17 '09 at 22:47
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How to initialize std::vector from C-style array?
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