Closes #598 (closed).
I am in doubt what a good location in the tutorial is. On the one hand, it is an expression, so it should fit into the 'values' chapter, as that contains a general discussion on the terms 'type', 'value', and 'expression'. But this chapter does not contain any sections on which kinds of expressions are possible.
On the other hand, the notion of the
if expression is actually explained in the
functions chapter. Since the
if expression and the
switch expression are conceptually very close together, I ended up adding the documentation under the