class MasterInstaller
def initialize
@installers = []
end
def register(installer)
@installers << installer
end
def install
for installer in @installers
installer.install
end
end
def uninstall
@installers.each { |installer|
installer.uninstall
}
end
def backup
@installers.each do |installer|
installer.backup
end
end
end
|
|
- << is the polymorphic append operator.
- { ... } is a code block. It is automatically passed to the each function.
- |installer| is an argument to the code block.
- list.each { |item| code } is equivalent to the for loop
- do ... end is also code block.
|
