June 2002
Beginner
759 pages
80h 42m
English
The if and unless statements execute blocks of code
depending on whether a condition is met. These statements take the
following forms:
if (expression) {block} else {block} unless (expression) {block} else {block} if (expression1) {block} elsif (expression2) {block} ... elsif (lastexpression) {block} else {block}