大约有 30,000 项符合查询结果(耗时:0.0323秒) [XML]

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How to search for “R” materials? [closed]

... Most of the time I find googling for R plus my searching term works fine. When it doesn't, I'll try using "R project", or adding CRAN, statistic or language to the search. Is there a particular topic that you're having problems searchi...
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What is the documents directory (NSDocumentDirectory)?

... Hilarious how I need to google this each time I have to use it. I think all mobile platforms should provide default global parameter for the home/writable directory – Ravindranath Akila Feb 18 '14 at 7:42 ...
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Why would I use Scala/Lift over Java/Spring? [closed]

... JSP would be madness. This is a good thing on larger projects, where the time to just read and understand can be overwhelming. Object-Relational Mapper Choices Lift's builtin ORM is "Mapper". There's an upcoming alternative called "Record", but I think it's still considered pre-alpha. The LiftW...
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Difference between /res and /assets directories

...resources are turned into constant field names that are checked at compile time, so there's less of an opportunity for mismatches between the code and the resources themselves. None of that applies to assets. So why have an assets folder at all? If you want to compute the asset you want to use at r...
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What's the difference between HEAD^ and HEAD~ in Git?

... Rules of thumb Use ~ most of the time — to go back a number of generations, usually what you want Use ^ on merge commits — because they have two or more (immediate) parents Mnemonics: Tilde ~ is almost linear in appearance and wants to go backward in a...
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SecurityException: Permission denied (missing INTERNET permission?)

....xml file or, as internet permission is granted at installation not at run time, by long standing, missed bug in Android framework that causes your app to be successfully installed, but without expected permission grant. My Manifest is correct, so how can this happen? Theoretically, presence of us...
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Insert a commit before the root commit in Git?

... This worked for me. Additionally I used timedatectl set-time '2017-01-01 00:00:00' to give newroot an old timestamp. – chrm May 14 '17 at 11:54 ...
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Maven2: Best practice for Enterprise Project (EAR file)

...-------------------------------------------------------------------- Total time: 8.817 s Finished at: 2015-01-27T00:51:59+01:00 Final Memory: 24M/207M ------------------------------------------------------------------------ ...
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Use Visual Studio web.config transform for debugging [duplicate]

... Sometimes I need to debug against our integration or staging databases rather than the usual development database. It would be very helpful to have the appropriate transformation applied when running VS's debugger. ...
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How do I measure the execution time of JavaScript code with callbacks?

... Use the Node.js console.time() and console.timeEnd(): var i; console.time("dbsave"); for(i = 1; i < LIMIT; i++){ db.users.save({id : i, name : "MongoUser [" + i + "]"}, end); } end = function(err, saved) { console.log(( err || !saved )...