所以假设我有这个(不工作)：
class User
description = "I am User class variable"
def print
puts description
end
end
解决方法
在您的情况下,描述只是局部变量.您可以使用特殊字符@,@ @,$更改此范围：
a = 5 defined? a => "local-variable" @a = 5 defined? @a => "instance-variable" @@a = 5 defined? @@a => "class variable" $a = 5 defined? $a => "global-variable"
为了您的目的,我认为可能是通过这种方式使用
class User
def initialize(description)
@description = description
end
def print
puts @description
end
end
obj = User.new("I am User")
obj.print
# => I am User