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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 ...
Android: ScrollView force to bottom
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Lakhwinder Singh
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answered Jun 20 '10 at 18:41
CommonsWareCommo...
Sublime - delete all lines containing specific value
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edited Jun 15 '15 at 11:43
Opal
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vim deleting backward tricks
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Lucas OmanLucas Oman
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How to declare string constants in JavaScript? [duplicate]
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edited Apr 8 '16 at 7:24
answered Apr 26 '11 at 4:55
ale...
C++ Tuple vs Struct
...e. Below is the benchmark code and performance results collected using gcc-4.9.2 and clang-4.0.0:
std::vector<StructData> test_struct_data(const size_t N) {
std::vector<StructData> data(N);
std::transform(data.begin(), data.end(), data.begin(), [N](auto item) {
std::rand...
How to exit from the application and show the home screen?
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Waynn Lue
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answered Jul 12 '10 at 8:00
ognianognian
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Mime type for WOFF fonts?
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743
Update from Keith Shaw's comment on Jun 22, 2017:
As of February 2017, RFC8081 is the propo...
How to split a string in Haskell?
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edited Jul 23 '16 at 12:45
Alex
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answered Feb 1...
How to get distinct values for non-key column fields in Laravel?
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answered Aug 10 '14 at 13:08
Marcin NabiałekMarcin Nabiałek
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