R/onAttach.R

In hbal: Hierarchically Regularized Entropy Balancing

#' @title Subsidiary hbal Function
#' @description Function to load package description.
#' @param lib   libname
#' @param pkg   package name
#' @importFrom utils packageDescription
#' @references Xu, Y., & Yang, E. (2022). Hierarchically Regularized Entropy Balancing. Political Analysis, 1-8. doi:10.1017/pan.2022.12

.onAttach <- function(lib, pkg) {
    mylib <- dirname(system.file(package = pkg))
    title <- packageDescription(pkg, lib.loc = mylib)$Title
    ver <- packageDescription(pkg, lib.loc = mylib)$Version
    #author <- packageDescription(pkg, lib.loc = mylib)$Author
    # packageStartupMessage(pkg, ": ", title, "\nVersion: ", ver, "\nReference: ", 
    #     "Xu, Y., & Yang, E. (2022). Hierarchically Regularized Entropy Balancing. Political Analysis, 1-8. doi:10.1017/pan.2022.12", "\n")
    packageStartupMessage(pkg, ": ", title, ", v.", ver, "\n", "Report bugs -> yiqingxu@stanford.edu")    
}