大约有 40,000 项符合查询结果(耗时:0.0637秒) [XML]

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Better explanation of when to use Imports/Depends

The " Writing R Extensions " manual provides the following guidance on when to use Imports or Depends: 4 Answers ...
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Why does ContentResolver.requestSync not trigger a sync?

I am trying to implement the Content-Provider-Sync Adapter pattern as discussed at Google IO - slide 26. My content provider is working, and my sync works when I trigger it from the Dev Tools Sync Tester application, however when I call ContentResolver.requestSync(account, authority, bundle) from ...
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Is there a generator version of `string.split()` in Python?

string.split() returns a list instance. Is there a version that returns a generator instead? Are there any reasons against having a generator version? ...
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What Haskell representation is recommended for 2D, unboxed pixel arrays with millions of pixels?

I want to tackle some image-processing problems in Haskell. I'm working with both bitonal (bitmap) and color images with millions of pixels. I have a number of questions: ...
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How to add a local repo and treat it as a remote repo

I'm trying to make a local repo act as a remote with the name bak for another local repo on my PC, using the following: 4...
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public friend swap member function

In the beautiful answer to the copy-and-swap-idiom there is a piece of code I need a bit of help: 2 Answers ...
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Why should I use core.autocrlf=true in Git?

I have a Git repository that is accessed from both Windows and OS X, and that I know already contains some files with CRLF line-endings. As far as I can tell, there are two ways to deal with this: ...
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How exactly does the “Specific Version” property of an assembly reference work in Visual Studio?

Today I had a closer look at the "Specific Version" property of assembly references in Visual Studio 2010. After a few experiments with unexpected results I set out to learn as much as possible about how the property works. Even SO, it appears to me, does not have all the answers, so here is my atte...
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What optimizations can GHC be expected to perform reliably?

GHC has a lot of optimizations that it can perform, but I don't know what they all are, nor how likely they are to be performed and under what circumstances. ...
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Foreign key constraints: When to use ON UPDATE and ON DELETE

I'm designing my database schema using MySQL Workbench, which is pretty cool because you can do diagrams and it converts them :P ...