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Random record in ActiveRecord
...e current record count) as an offset.
offset = rand(Model.count)
# Rails 4
rand_record = Model.offset(offset).first
# Rails 3
rand_record = Model.first(:offset => offset)
To be honest, I've just been using ORDER BY RAND() or RANDOM() (depending on the database). It's not a performance issue ...
if else statement in AngularJS templates
...from the Youtube API. Some of the videos are in 16:9 ratio and some are in 4:3 ratio.
10 Answers
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What is the most effective way for float and double comparison?
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463
Be extremely careful using any of the other suggestions. It all depends on context.
I have s...
What is the most pythonic way to check if an object is a number?
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Setting up a common nuget packages folder for all solutions when some projects are included in multi
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What is a classpath and how do I set it?
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How to write a scalable Tcp/Ip based server
...eption("Port number entered would seem to be invalid, should be between 1024 and 65000", e);
}
try
{
_serverSocket = new System.Net.Sockets.Socket(serverEndPoint.Address.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
}
catch (System.Net.Sockets.SocketException e)
{
thr...
How do I implement a callback in PHP?
...cation. This has allowed some elements of functional programming since PHP 4. The flavors are:
$cb1 = 'someGlobalFunction';
$cb2 = ['ClassName', 'someStaticMethod'];
$cb3 = [$object, 'somePublicMethod'];
// this syntax is callable since PHP 5.2.3 but a string containing it
// cannot be called dire...
Redirecting stdout to “nothing” in python
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edited Dec 30 '14 at 0:03
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answered Jul 18 '11 at 16:16
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