r - 使用 setnames 时忽略安全检查

Question

DT<-data.table(a=1,b=2,a=3)
DT
#   a b a
#1: 1 2 3
setnames(DT,"b","c")
#Error in setnames(DT, "b", "c") : 
# 'old' is character but there are duplicate column names: a

在上面的示例中，您可以看到我希望更改不重复的列的标题，而是 setnames阻止我这样做。有没有办法忽略检查，因为我正在更改的列标题没有重复？

Answer 1

+1 现在已在 v1.8.11 中修复。来自 NEWS :

setnames(DT,"oldname","newname") no longer complains about duplicated column names in DT so long as oldname is unique and unambiguous. Thanks to Wet Feet for highlighting.