大约有 49,000 项符合查询结果（耗时：0.0620秒） [XML]
Find all records which have a count of an association greater than zero
...tinct.pluck :article_id
=> [43, 34, 45, 55, 17, 19, 1, 3, 4, 18, 44, 5, 13, 22, 16, 6, 53]
[11] pry(main)> _.size
=> 17
[12] pry(main)> Article.joins(:comments).size
=> 45
[13] pry(main)> Article.joins(:comments).distinct.size
=> 17
[14] pry(main)> Article.joins(:comments).di...
Improving bulk insert performance in Entity framework [duplicate]
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213
There is opportunity for several improvements (if you are using DbContext):
Set:
yourContext....
How do I use jQuery's form.serialize but exclude empty fields
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edited Jul 16 '13 at 12:25
answered Mar 4 '09 at 14:29
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How JavaScript closures are garbage collected
...garbage collection, but gives some clues of what should happen.
Section 13 Function definition, step 4: "Let closure be the result of creating a new Function object as specified in 13.2"
Section 13.2 "a Lexical Environment specified by Scope" (scope = closure)
Section 10.2 Lexical Environments:
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jQuery how to find an element based on a data-attribute value?
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– Frédéric Hamidi
Nov 16 '10 at 9:13
7
@c00lryguy, jQuery UI defines one, and there are standal...
What is the purpose of the vshost.exe file?
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Daniel BrücknerDaniel Brückner
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add a ...
How to mark-up phone numbers?
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edited May 3 '13 at 12:27
Tiago Sippert
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How to import existing Android project into Eclipse?
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James WaldJames Wald
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Git commit with no commit message
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139
git generally requires a non-empty message because providing a meaningful commit message is pa...
Convert Python dict into a dataframe
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answered Sep 16 '13 at 21:12
Andy HaydenAndy Hayden
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