大约有 47,000 项符合查询结果(耗时:0.0732秒) [XML]

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Cocoa Core Data efficient way to count entities

...an efficient way to make a count over an Entity-Type (like SQL can do with SELECT count(1) ...). Now I just solved this task with selecting all with NSFetchedResultsController and getting the count of the NSArray ! I am sure this is not the best way... ...
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JSON.net: how to deserialize without using the default constructor?

...d really help if it was possible to set another convention for constructor selection. For instance, I think the Unity container supports this. Then you could make it so that it always selected the constructor with most parameters instead of falling back to the default one. Any possibility such a ext...
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How to delete all datastore in Google App Engine?

...hboard for your app (login on appengine) then datastore --> dataviewer, select all the rows for the table you want to delete and hit the delete button (you'll have to do this for all your tables). You can do the same programmatically through the remote_api (but I never used it). If you're talki...
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How many concurrent requests does a single Flask process receive?

...e are layers of software implementation that abstract the bottom level CPU from us and make us think we are running code concurrently. These "things" can be processes, which are units of code that get run concurrently in the sense that each process thinks its running in its own world with its own, ...
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Entity Framework. Delete all rows in table

... var all = from c in dataDb.Table select c; dataDb.Table.RemoveRange(all); dataDb.SaveChanges(); share | improve this answer | follo...
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How to resolve : Can not find the tag library descriptor for “http://java.sun.com/jsp/jstl/core” [du

...ting a target server for my project. i.e. right-click on your project and select 'Properties' -> 'Targeted Runtimes' and select the server you going to run your web app on (Tomcat 6 or 7). share | ...
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Can you resolve an angularjs promise before you return it?

... I think this answer should be selected. – Morteza Tourani May 8 '16 at 20:13 ...
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UIButton: how to center an image and a text using imageEdgeInsets and titleEdgeInsets?

...answered myself (my answer was the only one at the time). I've changed the selected answer when the author of the current selected answer focused on eliminate those magic numbers. So, in the selected answer, you can figure out what they mean. – reinaldoluckman ...
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The term 'Get-ADUser' is not recognized as the name of a cmdlet

...es & Features. Within Add Roles and Features Wizard, on Features tab, select Remote Server Administration Tools, select - Role Admininistration Tools - Select AD DS and DF LDS Tools. After that, you can see the PS Active Directory package. ...
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Best TCP port number range for internal applications [closed]

... Short answer: use an unassigned user port Over achiever's answer - Select and deploy a resource discovery solution. Have the server select a private port dynamically. Have the clients use resource discovery. The risk that that a server will fail because the port it wants to listen on is n...