大约有 42,000 项符合查询结果(耗时:0.0530秒) [XML]
Do threads have a distinct heap?
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edited May 23 '17 at 10:31
Community♦
111 silver badge
answered Nov 3 '09 at 5:33
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Rails 3: Get Random Record
...NDOM()") # For MySQL :order => "RAND()", - thanx, @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 ta...
With CSS, use “…” for overflowed block of multi-lines
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answered Jun 3 '11 at 5:22
Jim ThomasJim Thomas
1,6181111 silver badges77 bronze badges
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Column order manipulation using col-lg-push and col-lg-pull in Twitter Bootstrap 3
I'm now reading documentation on Twitter Bootstrap 3, and tried to follow column ordering as shown in this page but hit the wall. I don't understand why such a code works nor how to correctly specify the setting. What I want to show is one grid, which is consisted of length 5, and the other leng...
jQuery - checkbox enable/disable
...checkboxes like this. If the "Check Me" checkbox is checked, all the other 3 checkboxes should be enabled, else they should be disabled. How can I do this using jQuery?
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How does Django's Meta class work?
...:55
Moon
3,04711 gold badge1212 silver badges4242 bronze badges
answered Apr 27 '12 at 3:04
TadeckTadeck
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Datetime equal or greater than today in MySQL
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338
SELECT * FROM users WHERE created >= CURDATE();
But I think you mean created < today
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Weighted random numbers
...andom number that is 0 or greater and is less than the sum of the weights
3) go through the items one at a time, subtracting their weight from your random number, until you get the item where the random number is less than that item's weight
Pseudo-code illustrating this:
int sum_of_weight = 0;
f...
What is the difference between range and xrange functions in Python 2.X?
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836
In Python 2.x:
range creates a list, so if you do range(1, 10000000) it creates a list in mem...
