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MySQL select 10 random rows from 600K rows fast
...t handling several cases, from simple, to gaps, to non-uniform with gaps.
http://jan.kneschke.de/projects/mysql/order-by-rand/
For most general case, here is how you do it:
SELECT name
FROM random AS r1 JOIN
(SELECT CEIL(RAND() *
(SELECT MAX(id)
...
How do you represent a graph in Haskell?
...thing to get wrong.
However, a quick google for "Haskell graph" led me to http://www.haskell.org/haskellwiki/The_Monad.Reader/Issue5/Practical_Graph_Handling, which looks like a worthwhile read.
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What is the curiously recurring template pattern (CRTP)?
... object's foo() method, which is what you aim to do with virtual methods.
http://coliru.stacked-crooked.com/a/2d27f1e09d567d0e
template <typename T>
struct Base {
void foo() {
(static_cast<T*>(this))->foo();
}
};
struct Derived : public Base<Derived> {
void foo() {
...
PHP: Return all dates between two dates in an array [duplicate]
...te('Y-m-d',$iDateFrom));
}
}
return $aryRange;
}
source: http://boonedocks.net/mike/archives/137-Creating-a-Date-Range-Array-with-PHP.html
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How to make inline functions in C#
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How to retrieve the dimensions of a view?
...ctually drawn.
Look into Activity lifecycle for finding the best moment.
http://developer.android.com/reference/android/app/Activity.html#ActivityLifecycle
I believe a good practice is to use OnGlobalLayoutListener like this:
yourView.getViewTreeObserver().addOnGlobalLayoutListener(new OnGlobalL...
How to vertically center divs? [duplicate]
...osition: relative;
top: 50%;
transform: translateY(-50%);
}
Example: http://jsfiddle.net/cas07zq8/
credit
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Why do we need a fieldset tag?
...
It's needed for accessibility.
Check out:
http://usability.com.au/2013/04/accessible-forms-1-labels-and-identification/
The HTML 4 elements fieldset and legend allow you to layout and organise a large form with many different areas of interest in a logical way witho...
Why do I have to access template base class members through the this pointer?
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When should I mock?
...eUploader: {
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