大约有 18,371 项符合查询结果（耗时：0.0244秒） [XML]
Which method performs better: .Any() vs .Count() > 0?
...tion (on ~200.000 records):
con = db.Contacts.
Where(a => a.CompanyId == companyId && a.ContactStatusId <= (int) Const.ContactStatusEnum.Reactivated
&& !a.NewsletterLogs.Any(b => b.NewsletterLogTypeId == (int) Const.NewsletterLogTypeEnum.Unsubscr)
).OrderBy(...
Return rows in random order [duplicate]
...
SELECT * FROM table
ORDER BY NEWID()
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How to hide Bootstrap modal with javascript?
...e browser window, use the browser's console to try
$('#myModal').modal('hide');
If it works (and the modal closes) then you know that your close Javascript is not being sent from the server to the browser correctly.
If it doesn't work then you need to investigate further on the client what is h...
Calculating sum of repeated elements in AngularJS ng-repeat
...
one downside to this is that it iterates over the collection twice. this is fine for small collections, but what if the collection is rather large? it seems like in ng-repeat there should be a way to have a running sum on a given ob...
Why all the Active Record hate? [closed]
...> :company )
This generates SQL with LEFT JOIN companies on companies.id = person.company_id, and automatically generates associated Company objects so you can do people.first.company and it doesn't need to hit the database because the data is already present.
@pix0r
The inherent probl...
Retain cycle on `self` with blocks
I'm afraid this question is pretty basic, but I think it's relevant to a lot of Objective-C programmers who are getting into blocks.
...
Find the closest ancestor element that has a specific class
...n so in the end, you have the ancestor with that class or null.
Here's a fiddle, if anyone wants to improve it. It won't work on old browsers (i.e. IE); see this compatibility table for classList. parentElement is used here because parentNode would involve more work to make sure that the node is an...
How to access a preexisting collection with Mongoose?
... following, either schema-mapped:
new Schema({ url: String, text: String, id: Number},
{ collection : 'question' }); // collection name
or model mapped:
mongoose.model('Question',
new Schema({ url: String, text: String, id: Number}),
'question'); ...
What is the purpose of Rank2Types?
...morphic function as an argument to another function. So something like map id ["a","b","c"] is perfectly legal. But the function may only use it as monomorphic. In the example map uses id as if it had type String -> String. And of course you can also pass a simple monomorphic function of the give...
Best practice for embedding arbitrary JSON in the DOM?
... intended use is clear. It doesn't feel like a hack (e.g. as using CSS to hide your "carrier" element does). It's perfectly valid.
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