makeVector() and cachemean() missing before starting with item 3.

[larspijnappel]

Hi Daniele,

In preparation of the upcoming R Programming course, I followed your tutorial step-by-step by creating my own Rmd. However, I bumped into a couple of issues (such as missing the discussed functions). But finally was able to solve them (and in the end I gained more insights!). However, I can imagine that other newbies might find it a bit too challenging to completely follow your tutorial, so I thought that maybe the PA2.Rmd may contain some enhancements you might find useful as well.

Anyway, thx again for your tutorial.

Cheers!
lars