Load a R library without cluttering the terminal

libraryQ

###############################################################################
#
# libraryQ ----
#
###############################################################################
#
# author  : Srikanth KS (talegari)
# license : GNU AGPLv3 (http://choosealicense.com/licenses/agpl-3.0/)
#
###############################################################################
#
# Description ----
#
# The function loads a R library, if present and return an invisible TRUE.
# If the package is not present, it returns an invisible FALSE.
# No message or warning is written to the terminal.
# pkgName has to be a string (character vector of length 1)

libraryQ <- function(pkgName){
  stopifnot(is.character(pkgName) && length(pkgName) == 1)
  val <- suppressMessages(
           suppressWarnings(
             require(pkgName, character.only = TRUE)))
  return(invisible(val))
}