List and print packages

functions.Rmd

@@ -1,3 +1,44 @@
 ---
 title: R object browser functions
 ---
+
+# Description
+
+## Print
+
+### Package
+
+```{r print package}
+##' Print a package
+##'
+##' Display the fullname of the package,
+##' the type, and the name with the size.
+##' @title Print a package
+##' @param pkg The package to print
+##' @return The line to print to the buffer
+print_package <- function(pkg)
+{
+  paste0(pkg,
+         "|pkg| ",
+         pkg)
+}
+```
+
+# List objects
+
+## Packages
+
+### List packages
+
+```{r list packages}
+##' List packages
+##'
+##' List all the installed packages
+##' @title List packages
+##' @return A character vector of packages
+list_packages <- function()
+  sapply(row.names(installed.packages()),
+         print_package,
+         USE.NAMES = F,
+         simplify = T)
+```