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Rails 3: Get Random Record
...DanSingerman
# Rails 3
Thing.order("RANDOM()").first
or
Thing.first(:offset => rand(Thing.count))
# Rails 3
Thing.offset(rand(Thing.count)).first
Actually, in Rails 3 all examples will work. But using order RANDOM is quite slow for big tables but more sql-style
UPD. You can use the followin...
Show control hierarchy in the WinForms designer
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matplotlib Legend Markers Only Once
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Python Regex instantly replace groups
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Splitting on last delimiter in Python string?
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create two method for same url pattern with different arguments
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What is the “continue” keyword and how does it work in Java?
...r what the following code will generate.
Random r = new Random();
Set<Integer> aSet= new HashSet<Integer>();
int anInt;
do {
anInt = r.nextInt(10);
if (anInt % 2 == 0)
continue;
System.out.println(anInt);
} while (aSet.add(anInt));...
PHP foreach loop key value
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Android studio using > 100% CPU at all times - no background processes appear to be running
... I can't seem to find this "Background" menu. I perform a search in the Settings but it won't show, but when I do a Search All through the Shift keys I can see them, but clicking on them leads me nowhere. Might it be disabled?
– John Ernest Guadalupe
Jul 6 '...
Difference between addSubview and insertSubview in UIView class
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