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What does .SD stand for in data.table in R

... .SDcols to batch-convert groups of such columns. We notice that the following columns are stored as character in the Teams data set: # see ?Teams for explanation; these are various IDs # used to identify the multitude of teams from # across the long history of baseball fkt = c('teamIDBR', 'te...
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How to format a Java string with leading zero?

...d May 23 '16 at 10:13 Olivier GrégoireOlivier Grégoire 25.9k2020 gold badges7878 silver badges114114 bronze badges ...
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Eclipse RCP开发桌面程序 - 更多技术 - 清泛网 - 专注C/C++及内核技术

... Application.java ApplicationWorkbenchAdvisor.java ApplicationWorkbenchWindowAdvisor.java ApplicationActionBarAdvisor.java Perspective.java plugin.xml 这里的Application.java是我们整个程序的入口点,我们的程序运行的时候,会先执行Application的run方法,run方法...
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How do I get a Date without time in Java?

... answered Feb 19 '11 at 10:35 Jon SkeetJon Skeet 1210k772772 gold badges85588558 silver badges88218821 bronze badges ...
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How do I know which version of Javascript I'm using?

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Ruby: require vs require_relative - best practice to workaround running in both Ruby =1.

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Can anybody push to my project on github?

... Community♦ 111 silver badge answered May 6 '17 at 21:58 hd84335hd84335 4,21544 gold badge...
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Make Adobe fonts work with CSS3 @font-face in IE9

... For those not au fait with compiling C programs on Windows, it's very straightforward. Follow this guide from Microsoft: msdn.microsoft.com/en-us/library/bb384838.aspx – lee_mcmullen Mar 9 '15 at 13:50 ...
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Why is “origin/HEAD” shown when running “git branch -r”?

... | edited Nov 8 '17 at 11:44 László Megyer 322 bronze badges answered Jul 27 '11 at 2:14 ...
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Why does the Scala compiler disallow overloaded methods with default arguments?

... 114 I'd like to cite Lukas Rytz (from here): The reason is that we wanted a deterministic nami...