大约有 42,000 项符合查询结果(耗时:0.0567秒) [XML]

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Why fragments, and when to use fragments instead of activities?

In Android API 11+, Google has released a new class called Fragment . 11 Answers 11 ...
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Difference between static class and singleton pattern?

What real (i.e. practical) difference exists between a static class and a singleton pattern? 39 Answers ...
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Is there a C++ gdb GUI for Linux? [closed]

Briefly: Does anyone know of a GUI for gdb that brings it on par or close to the feature set you get in the more recent version of Visual C++? ...
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Is it ever advantageous to use 'goto' in a language that supports loops and functions? If so, why?

I've long been under the impression that goto should never be used if possible. While perusing libavcodec (which is written in C) the other day, I noticed multiple uses of it. Is it ever advantageous to use goto in a language that supports loops and functions? If so, why? ...
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What's so bad about Template Haskell?

It seems that Template Haskell is often viewed by the Haskell community as an unfortunate convenience. It's hard to put into words exactly what I have observed in this regard, but consider these few examples ...
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How to delete an item in a list if it exists?

I am getting new_tag from a form text field with self.response.get("new_tag") and selected_tags from checkbox fields with ...
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Class does not implement its superclass's required members

So I updated to Xcode 6 beta 5 today and noticed I received errors in nearly all of my subclasses of Apple's classes. 4 Ans...
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Count the number of occurrences of a character in a string in Javascript

I need to count the number of occurrences of a character in a string. 33 Answers 33 ...
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When is std::weak_ptr useful?

I started studying smart pointers of C++11 and I don't see any useful use of std::weak_ptr . Can someone tell me when std::weak_ptr is useful/necessary? ...
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What are metaclasses in Python?

In Python, what are metaclasses and what do we use them for? 22 Answers 22 ...