大约有 19,000 项符合查询结果(耗时:0.0281秒) [XML]

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How to get the last N records in mongodb?

...our question, you need to sort in ascending order. Assuming you have some id or date field called "x" you would do ... .sort() db.foo.find().sort({x:1}); The 1 will sort ascending (oldest to newest) and -1 will sort descending (newest to oldest.) If you use the auto created _id field it has ...
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Protected methods in Objective-C

... Hi yonix, the import for the subclass header would be done inside of the .m file not inside of the .h file, so importing the subclass would't import these protected methods. – Brian Westphal Feb 22 '12 at 19:05 ...
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How to darken a background using CSS?

...o you should have a 'fallback color'. This color will be most likely be solid (fully opaque) ex:background:rgb(96, 96, 96). Refer to this blog for RGBa browser support. share | improve this answer ...
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ASP.NET Identity DbContext confusion

A default MVC 5 App comes with this piece of code in IdentityModels.cs - this piece of code is for all the ASP.NET Identity operations for the default templates: ...
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How do I parse JSON in Android? [duplicate]

How do I parse a JSON feed in Android? 3 Answers 3 ...
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Convert integer to hexadecimal and back again

...o: Convert Between Hexadecimal Strings and Numeric Types (C# Programming Guide) for more information and examples. share | improve this answer | follow | ...
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H2 in-memory database. Table not found

...se with URL "jdbc:h2:test" . I create a table using CREATE TABLE PERSON (ID INT PRIMARY KEY, FIRSTNAME VARCHAR(64), LASTNAME VARCHAR(64)); . I then select everything from this (empty) table using SELECT * FROM PERSON . So far, so good. ...
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How to get value of selected radio button?

... var rates = document.getElementById('rates').value; The rates element is a div, so it won't have a value. This is probably where the undefined is coming from. The checked property will tell you whether the element is selected: if (document.getElementById...
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How to vertically align a html radio button to it's label?

... Try this: input[type="radio"] { margin-top: -1px; vertical-align: middle; } share | improve this answer | follow | ...
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Returning http status code from Web Api controller

... I did not know the answer so asked the ASP.NET team here. So the trick is to change the signature to HttpResponseMessage and use Request.CreateResponse. [ResponseType(typeof(User))] public HttpResponseMessage GetUser(HttpReque...