#' A installifnot Function
#'
#' Download, install and load packages from CRAN-like repositories.
#' @param pckgName names of package
#' @param force.install TRUE to force installation
#' @export installifnot
#' @author Miriam Mota \email{miriam.mota@@vhir.org}
#' @examples
#' ## installifnot("rpart")
#' @keywords install require library
installifnot <- function(pckgName, force.install = FALSE){
if (!is.element(pckgName, installed.packages()[,1]) | force.install )
install.packages(pckgName, dep = TRUE)
require(pckgName, character.only = TRUE)
}
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