大约有 40,000 项符合查询结果(耗时:0.0505秒) [XML]

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Add new row to dataframe, at specific row-index, not appended?

...s the (often slow) rbind call: existingDF <- as.data.frame(matrix(seq(20),nrow=5,ncol=4)) r <- 3 newrow <- seq(4) insertRow <- function(existingDF, newrow, r) { existingDF[seq(r+1,nrow(existingDF)+1),] <- existingDF[seq(r,nrow(existingDF)),] existingDF[r,] <- newrow existing...
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How do I have to configure the proxy settings so Eclipse can download new plugins?

... 330 I had the same problem. I installed Eclipse 3.7 into a new folder, and created a new workspace. ...
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convert a JavaScript string variable to decimal/money

... | edited Dec 30 '13 at 19:28 answered May 23 '11 at 10:16 ...
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Using a remote repository with non-standard port

...repository. The remote repository is being served on a non-standard port (4019). 5 Answers ...
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Fit cell width to content

...ke a stab at it. JSfiddle of the example. HTML: <table style="width: 100%;"> <tr> <td class="block">this should stretch</td> <td class="block">this should stretch</td> <td class="block">this should be the content width</td> </tr> &l...
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Is there a naming convention for MySQL?

... 108 I would say that first and foremost: be consistent. I reckon you are almost there with the con...
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Ignore modified (but not committed) files in git?

...Feb 27 '12 at 14:49 IcanDivideBy0 1,48399 silver badges1616 bronze badges answered Apr 17 '09 at 16:22 csmosxc...
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Why doesn't the example compile, aka how does (co-, contra-, and in-) variance work?

... 302 Generically, a covariant type parameter is one which is allowed to vary down as the class is su...
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Can an array be top-level JSON-text?

...ts defining JSON: RFC 4627, RFC 7159 (which obsoletes RFC 4627), and ECMA-404. They differ in which top-level elements they allow, but all allow an object or an array as the top-level element. RFC 4627: Object or array. "A JSON text is a serialized object or array." RFC 7159: Any JSON value. "A J...
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Is it possible to Pivot data using LINQ?

... | edited Sep 20 '13 at 22:38 nawfal 58.4k4343 gold badges287287 silver badges332332 bronze badges ...