R import multiple packages at once
モチベーション
Rでlibrary()を打つ行数減らしたいよねー
e.g. ふつーなら
library(magrittr) library(dplyr) library(igraph) library(data.frame)
一気にやりたいんで
libs <- c("magrittr", "dplyr", "igraph", "data.frame") apply(libs, require, character.only = T)
User Input has better way
We know better and simple way.
list_options <- c("add an item", "Delete an item", "Print the list", "Quit") select.list(list_options)