大约有 42,000 项符合查询结果(耗时:0.0797秒) [XML]

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Android AsyncTask threads limits?

...e in the phone. For all those operations (updates, retrieving data from db and etc.) I use async tasks. As up till now I didn't see why I shouldn't use them, but recently I experienced that if I do some operations some of my async tasks simply stop on pre-execute and don't jump to doInBackground. Th...
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Why is the clone() method protected in java.lang.Object?

...ails to serve this purpose ... This is a highly atypical use of interfaces and not one to be emulated ... In order for implementing the interface to have any effect on a class, it and all of its superclasses must obey a fairly complex, unenforceable and largely undocumented protocol" ...
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Unit test naming best practices [closed]

What are the best practices for naming unit test classes and test methods? 12 Answers ...
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ssh remote host identification has changed

I've reinstalled my server and I am getting these messages: 28 Answers 28 ...
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Should I index a bit field in SQL Server?

...worth doing. I admit I don't know enough about how indexes work to understand why that is. 19 Answers ...
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How do I enable the column selection mode in Eclipse?

...enable it. I tried pressing the ALT-key like I am used to in Visual Studio and all other Microsoft products but that had no effect. ...
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What is the coolest thing you can do in

...hing you can do in a few lines of simple code. I'm sure you can write a Mandelbrot set in Haskell in 15 lines but it's difficult to follow. ...
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Difference between “@id/” and “@+id/” in Android

In @+id/ the plus symbol + instructs to create a new resource name and add in to the R.java file but what about @id/ ? From the documentation of ID : when referencing an Android resource ID , you do not need the plus symbol, but must add the android package namespace, like so: ...
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Difference between __getattr__ vs __getattribute__

I am trying to understand when to use __getattr__ or __getattribute__ . The documentation mentions __getattribute__ applies to new-style classes. What are new-style classes? ...
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Can constructors be async?

...onstructor acts very similarly to a method returning the constructed type. And async method can't return just any type, it has to be either “fire and forget” void, or Task. If the constructor of type T actually returned Task<T>, that would be very confusing, I think. If the async constru...