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Let setnames accept negative integers for the 'old' argument #1443

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richierocks opened this issue Nov 26, 2015 · 0 comments
Closed

Let setnames accept negative integers for the 'old' argument #1443

richierocks opened this issue Nov 26, 2015 · 0 comments
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@arunsrinivasan
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enhancement
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v1.9.8

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@richierocks
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If I want to change all the column names except the first, for example, currently I have to do something like

DT <- data.table(x = 1:3, y = 4:6, z = 7:9)
setnames(DT, seq_along(DT)[-1], c("m", "n"))

It would be convenient if I could pass negative integers to old, in order to write

setnames(DT, -1, c("m", "n"))
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@arunsrinivasan arunsrinivasan

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@richierocks @arunsrinivasan