大约有 41,730 项符合查询结果(耗时:0.0455秒) [XML]

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object==null or null==object?

I heard from somebody that null == object is better than object == null check 11 Answers ...
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In Django, how do I check if a user is in a certain group?

I created a custom group in Django's admin site. 12 Answers 12 ...
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SQL select only rows with max value on a column [duplicate]

I have this table for documents (simplified version here): 27 Answers 27 ...
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Write a program to find 100 largest numbers out of an array of 1 billion numbers

I recently attended an interview where I was asked "write a program to find 100 largest numbers out of an array of 1 billion numbers." ...
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C# Object Pooling Pattern implementation

Does anyone have a good resource on implementing a shared object pool strategy for a limited resource in vein of Sql connection pooling? (ie would be implemented fully that it is thread safe). ...
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Sharing a URL with a query string on Twitter

I'm trying to put a Twitter share link in an email. Because this is in an email I can't rely on JavaScript, and have to use the "Build Your Own" Tweet button. ...
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What's the difference between the various methods to get a Context?

In various bits of Android code I've seen: 8 Answers 8 ...
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What's the best practice for primary keys in tables?

When designing tables, I've developed a habit of having one column that is unique and that I make the primary key. This is achieved in three ways depending on requirements: ...
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Add line break to ::after or ::before pseudo-element content

I do not have access to the HTML or PHP for a page and can only edit via CSS. I've been doing modifications on a site and adding text via the ::after or ::before pseudo-elements and have found that escape Unicode should be used for things such as a space before or after the added content. ...
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Sass or Compass without ruby?

Is there a way to use Sass or Compass or anything like that without Ruby? 7 Answers 7...