is_inst

Check if a package is installed.

is_inst(pkg)

Arguments

pkg

string: package to search installation path for

Value

logical (TRUE/FALSE)

Details

This function provides a lightweight alternative to utils::installed.packages() by using nzchar instead.

References

• Check for installed packages before running install.packages-Stack Overflow

Examples

if (FALSE) {
is_inst("dplyr")
}