Ruby注释符

注释是Ruby代码中的注释行，在运行时会被忽略。一行注释以#字符开头，它们从#延伸到该行的末尾，如下所示-

#!/usr/bin/ruby-w
# This is a single line comment.

puts "Hello, Ruby!"

Hello, Ruby!

Ruby多行注释

您可以使用=begin 和=end 语法注释多行，如下所示-

#!/usr/bin/ruby-w

puts "Hello, Ruby!"

=begin
This is a multiline comment and con spwan as many lines as you
like. But =begin and =end should come in the first line only. 
=end

Hello, Ruby!

@counter      # keeps track times page has been hit
@siteCounter  # keeps track of times all pages have been hit