初学ruby 怎么把一个类导入呢
1. 例如在
Person.rb 中
Python code:
class Person
def talk
puts "nihao"
end
end
Student.rb
Python code:
class Student < Person
def talk
puts "nihao"
end
end
p = Student.new
p.talk
结果
>ruby Student.rb
Student.rb:1: uninitialized constant Person (NameError)
>Exit code: 1
经典 酷! book_simmone
自己添加require上去就行了~~~不过发现csdn ruby on rails 貌似人不多阿~~
不用那么麻烦的,在ruby中,include就可以实现继承
Python code:
class Student
include Person
def talk
puts "nihao"
end
end
相关问答:
我是用netbeans 去寫bnf
a program will ONLY accept strings based on the following grammar:
<compute> --> <value> = < ......
给Javascript和Ruby开个论坛专栏吧!
给Javascript和Ruby开个论坛专栏吧!
给Javascript和Ruby开个论坛专栏吧!
Javascript有专栏的:http://forum.csdn.net/SList/JavaScript
尊敬的用户deping_chen,您好: ......
1. 例如在
Person.rb 中
Python code:
class Person
def talk
puts "nihao"
end
end
Student.rb
Python code:
class Student < Person
def talk
puts &quo ......
学习PHP有一段时间了 现在想同时学习RUBY ON RAILS
由于之前学习PHP 已经装好了APACHE 和 MYSQL 现在想让APACHE服务器也可以运行RUBY。
应该怎么办?
请高手提示 谢谢
Rails应用部署专栏: http://ww ......