Ruby Programming Learning Notes

#将ARGV [0] convert to regular expression type

Pattern= regexp.new (argv[0])

#Devise Gem Pack

Devise is one of the most widely used authentication gem packages in Ruby. Devise provides us with complete features from registration to login, from forgotten password to retrieve password, etc.

#方法调用的语法

Object. Method name (parameter 1, parameter 2, Parameter 3, ..., parameter n)

The invocation of a method is the process of sending several parameters along with the message to the object.

Ruby Programming Learning Notes