大约有 40,800 项符合查询结果(耗时:0.0382秒) [XML]

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var self = this?

...g instance methods as callbacks for event handlers changes the scope of this from "My instance" to "Whatever just called the callback" . So my code looks like this ...
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What are five things you hate about your favorite language? [closed]

... graphics. NullPointerException not containing more information about what is null. The proliferation of pointlessly "configurable" frameworks/service provider interfaces/factory classes/dependency injection systems. The configurability is almost never used, DRY is violated egregiously, and code qua...
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What are CN, OU, DC in an LDAP search?

I have a search query in LDAP like this. What exactly does this query mean? 3 Answers ...
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Does ruby have real multithreading?

...n't actually have a name, which makes it quite awkward to refer to it and is really annoying and confusing. It is most often referred to as "Ruby", which is even more annoying and confusing than having no name, because it leads to endless confusion between the features of the Ruby Programming L...
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What does the git index contain EXACTLY?

... The Git book contains an article on what an index includes: The index is a binary file (generally kept in .git/index) containing a sorted list of path names, each with permissions and the SHA1 of a blob object; git ls-files can show you the contents of the index: $ git ls-files --stage 100644 ...
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Using an ORM or plain SQL? [closed]

...a in and out of the database. (You'll want to know how it handles polymorphism and many-to-many relationships if you need to map those. It's these two domains that provide most of the 'impedance mismatch' that makes some call ORM the 'vietnam of computer science'.) For applications that are transac...
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SQL Server Text type vs. varchar data type [closed]

...you're using SQL Server 2005 or later, use varchar(MAX). The text datatype is deprecated and should not be used for new development work. From the docs: Important ntext , text, and image data types will be removed in a future version of Microsoft SQL Server. Avoid using these data types in ...
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Purpose of Python's __repr__

What is the significance/purpose of this method? 7 Answers 7 ...
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What is hashCode used for? Is it unique?

I notice there is a getHashCode() method in every controls, items, in WP7, which return a sequence of number. Can I use this hashcode to identify an item? For example I want to identify a picture or a song in the device, and check it whereabout. This could be done if the hashcode given for specifi...
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How is __eq__ handled in Python and in what order?

Since Python does not provide left/right versions of its comparison operators, how does it decide which function to call? 3...