标签：style blog color os 使用 io div log sp
def hello # A nice simple method puts "Hello World" # Suppose we want to augment it... end
alias original_hello hello # Give the method a backup name
def hello puts "Your attention please" original_hello puts "This has been a test" end
标签：style blog color os 使用 io div log sp
原文地址：http://www.cnblogs.com/laoquans/p/3932525.html
