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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 ...
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...
Get value of a string after last slash in JavaScript
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248
At least three ways:
A regular expression:
var result = /[^/]*$/.exec("foo/bar/test.html")[0]...
Remove accents/diacritics in a string in JavaScript
... This solution is the only correct solution here. This works on NodeJS 4.6, Firefox 50 and Chrome 54.
– david_p
Dec 9 '16 at 13:12
9
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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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Run a single test method with maven
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edited Jan 29 '19 at 16:54
Yan Khonski
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answer...
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 merge two arrays in JavaScript and de-duplicate items
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answered Oct 18 '09 at 8:42
LiraNunaLiraNuna
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