我想在我的RStudio中安裝devtools。但我得到噸的錯誤: * installing *source* package ‘curl’ ...
** package ‘curl’ successfully unpacked and MD5 sums checked
Package libcurl was not found in the pkg-config search path.
我已經安裝了下面的類在我的定製[R包警告: #' A stock.returns class is an xts of stock(s) returns, a timeframe and the currency used.
#'
#' @slot xts_returns An xts of stock returns (potentially multiple stocks)
#' @sl