I think you know how to make a wrapper. Consider something like
setDT(setnames(lapply(coltypes,function(x){ if (x=="char")
return(character(0)); if (x=="numeric") return(numeric(0))}),colnames))
On Thu, Jul 23, 2015 at 2:34 PM, statquant3 <[email protected]> wrote:
> Doing DT <- data.table(date=Sys.Date()[0],id=character(0),value=numeric(0))
> is exactly what I want to do... programatically.
> I just want to provide column names and type of columns...
>
>
>
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