大约有 40,000 项符合查询结果(耗时:0.0703秒) [XML]

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What are the obj and bin folders (created by Visual Studio) used for?

I created a new project in Visual Studio 2010 and noticed that there are now two new folders named obj and bin in my project directory. ...
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JPA: How to have one-to-many relation of the same Entity type

There's an Entity Class "A". Class A might have children of the same type "A". Also "A" should hold it's parent if it is a child. ...
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Do declared properties require a corresponding instance variable?

Do properties in Objective-C 2.0 require a corresponding instance variable to be declared? For example, I'm used to doing something like this: ...
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Create a nonclustered non-unique index within the CREATE TABLE statement with SQL Server

It is possible to create a primary key or unique index within a SQL Server CREATE TABLE statement. Is it possible to create a non-unique index within a CREATE TABLE statement? ...
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In MySQL queries, why use join instead of where?

It seems like to combine two or more tables, we can either use join or where. What are the advantages of one over the other? ...
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Using mixins vs components for code reuse in Facebook React

I'm beginning to use Facebook React in a Backbone project and so far it's going really well. However, I noticed some duplication creeping into my React code. ...
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What is the apply function in Scala?

I never understood it from the contrived unmarshalling and verbing nouns ( an AddTwo class has an apply that adds two!) examples. ...
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Can I arrange repositories into folders on Github?

I am new to git and what I am doing now is to upload all my recent projects as repositories to github. There are a lot of different projects like webdesign, wordpress themes and different types of applications. And some of these also belong to bigger projects because they were about testing some stu...
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AngularJS - Access to child scope

If I have the following controllers: 6 Answers 6 ...
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Purpose of #!/usr/bin/python3

I have noticed this in a couple of scripting languages, but in this example, I am using python. In many tutorials, they would start with #!/usr/bin/python3 on the first line. I don't understand why we have this. ...