Ruby and Chef Syntax - Learning Chef - page 63

case statements also support a default case, in the event that nothing else matches.

For example, you could use Ruby's case statement to classify players on a baseball team
based on their age. Players younger than 12 are considered to be in the minor league.
Players between 13 and 18 are developing. Players between 19 and 30 are in their prime.
Players still in the league between 31 and 40 are on their decline, and anyone over 40 is
in retirement. This logic is captured by the following Ruby case statement:

case case player . age

when

when 0 . . 12
'Minor League'
when when 13 . . 18

'Developing'
when when 19 . . 30

'Prime'
when when 31 . . 40

'Decline'
else

else
'Retirement'
end end

Methods, Classes, and Modules

Although not necessary until more advanced interactions with Chef, Ruby also supports
methods, classes, modules, and an object-oriented hierarchy. Ruby methods are defined
using the def keyword. Ruby classes are defined using the class keyword. Ruby mod-
ules are defined using the module keyword:

class class Bacon Bacon

def def cook ( temperature )

# ...
end

end
end end

module module Edible Edible

# ...
end

end

Cl asses are created using the class keyword.