大约有 40,000 项符合查询结果(耗时:0.0600秒) [XML]

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Using comparison operators in Scala's pattern matching system

...al question, some additional information can be found in the documentation https://docs.scala-lang.org/tour/pattern-matching.html , they didn't fit in my case but because this stackoverflow answer is the first suggestion in Google I would like to post my answer which is a corner case of the question...
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Which is faster in Python: x**.5 or math.sqrt(x)?

... I've now run it 3 times on codepad.org and all three times a() was much faster than b(). – Jeremy Ruten Nov 29 '08 at 1:38 13 ...
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How to access command line parameters?

... over the command line arguments, but cannot access them with subscripts. http://doc.rust-lang.org/std/env/fn.args.html If you want the command line arguments as a vector of strings, this will work now: use std::env; ... let args: Vec<String> = env::args().map(|s| s.into_string().unwrap())....
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Date vs DateTime

... Unfortunately, not in the .Net BCL. Dates are usually represented as a DateTime object with the time set to midnight. As you can guess, this means that you have all the attendant timezone issues around it, even though for a Date object you'd want absolutely no timezone han...
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Import / Export database with SQL Server Server Management Studio

...oft SQL Server 2008 Management Studio Express from the Microsoft web site: http://www.microsoft.com/en-us/download/details.aspx?id=7593 After Microsoft SQL Server Management Studio Express has been installed, launch the application to connect to the system database. The "Connect to Server" dialog bo...
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What is the python keyword “with” used for? [duplicate]

...t in an object that supports the context management protocol (that is, has __enter__() and __exit__() methods). Update fixed VB callout per Scott Wisniewski's comment. I was indeed confusing with with using. share ...
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How to export data as CSV format from SQL Server using sqlcmd?

...th '""' + col1 + '""' AS col1, wrapped in (doubled) double quotes or just call a stored procedure. – MisterIsaak Dec 11 '13 at 17:17 ...
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Xcode without Storyboard and ARC

... storyboards or not. I wrote a script that does all that work for you: https://github.com/jfahrenkrug/Xcode4templates After running the script, you will have an "Xcode 4" section in the "New Project" screen: And then - Alas! - you get your beloved choices back: You will need a copy of t...
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SQL Server database backup restore on lower version

...R2 or restore the backup you have on a SQL Server 2008 R2 instance, export all the data and import it on a SQL Server 2008 database. share | improve this answer | follow ...
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Pandas aggregate count distinct

...eUploader: { brandingHtml: "Powered by \u003ca href=\"https://imgur.com/\"\u003e\u003csvg class=\"svg-icon\" width=\"50\" height=\"18\" viewBox=\"0 0 50 18\" fill=\"none\" xmlns=\"http://www.w3.org/2000/svg\"\u003e\u003cpath d=\"M46.1709 9.17788C46.1709 8.26454 46.2665 7.94324 4...