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ritchieking/readme.md

Created June 15, 2018 18:31
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Require R packages from a vector of package names; install a package automatically if it's not installed
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readme.md

This might be a terrible idea, but I like loading packages without a bunch of a require statements — or needing to explicitly install a package if I haven't already done so. I have this function in my .Rprofile, so the top of my R files look like this:

pkgs <- c(
  "tidyverse",
  "Hmisc",
  ... etc.
)

smartRequire(pkgs)
Raw
smartRequire.R
smartRequire <- function(pkgs) {
req <- function(pkg) {
if (!require(pkg, character.only = T)) {
install.packages(pkg, repos='http://cran.us.r-project.org', quiet=T)
}
require(pkg, character.only = T)
}
out <- lapply(pkgs, req)
}
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