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Cannot install packages using node package manager in Ubuntu
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vbovbo
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How to filter SQL results in a has-many-through relation
... sequential scan on student, where the subquery-variant used the index.
11) ypercube 3: 101.482 ms
Another late addition @ypercube. It is positively amazing, how many ways there are.
SELECT s.stud_id, s.student
FROM student s
JOIN student_club sc USING (stud_id)
WHERE sc.club_id = 10 ...
How efficient can Meteor be while sharing a huge collection among many clients?
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119
The short answer is that only new data gets sent down the wire. Here's
how it works.
There a...
How to get the number of days of difference between two dates on mysql?
...are used in the calculation.
which results in
select datediff('2016-04-14 11:59:00', '2016-04-13 12:00:00')
returns 1 instead of expected 0.
Solution is using select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');
(note the opposite order of arguments compared to datediff).
Some e...
How can I check a C# variable is an empty string “” or null? [duplicate]
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answered Nov 22 '11 at 9:41
oopbaseoopbase
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passport.js RESTful auth
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Community♦
111 silver badge
answered May 27 '13 at 22:55
MiguelMiguel
52.5k1010 gold badg...
How can I check for an empty/undefined/null string in JavaScript?
...ns/2031085/…
– CodeClimber
Oct 3 '11 at 15:02
117
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Any reason why scala does not explicitly support dependent types?
...implicitly[foo1.Bar =:= foo2.Bar] // Not OK: unequal types
<console>:11: error: Cannot prove that foo1.Bar =:= foo2.Bar.
implicitly[foo1.Bar =:= foo2.Bar]
In my view, the above should be enough to answer the question "Is Scala a dependently typed language?" in the positive: it'...
Listview Scroll to the end of the list after updating the list
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answered Aug 11 '11 at 20:22
Mason LeeMason Lee
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