ruby lesson index
ruby lesson index
\ 的作用相当于一个 ‘
@
, it is an instance variable
__FILE__
is the magic variable that contains the name of the current file.
=> nil
tells us that it knows we’re done defining the methodh
to take a name as a parameter.
puts
always returns nil, which is Ruby’s absolutely-positively-nothing value.puts
is the basic command to print something out in Ruby.