python学习笔记——类

# coding='utf-8'
 
class User():
    def __init__(self,name,sex):
        self.name = name
        self.sex = sex
        print '这里是构造函数'
    def setName(self,name):
        self.name = name
    def getName(self):
        return self.name
user = User("python",'男')
user.setName("ruby")
print user.getName()
print user.name
print user.sex
#===========打印结果===============
#这里是构造函数
#ruby
#ruby
#男

ruby的类定义

require 'jcode'
$KCODE='u'
 
class User
  attr_accessor :name,:sex
  def initialize(name,sex)
    @name = name
    @sex = sex
    p 'this is a constructor'
  end
   
  def get_name
    @name
  end
   
  def set_name(name)
    @name = name
  end
 
end
 
user = User.new('Ruby','11')
user.set_name('rubyruby')
p user.get_name
p user.name
p user.sex

javascript的类定义

function User(name,sex){
  this.name = name;
  this.sex = sex;
  alert("这里是构造函数")
}
User.prototype ={
  getName : function(){
    return this.name
  },
  setName :function(name){
    this.name = name
  }
}
var user = new User("XXX",'man')
user.setName("YYY");
alert(user.name)
alert(user.sex)

# -*- coding:utf-8 -*-
# 这是一个简单的类,用于输出一个精确到小数点后两位的浮点数
 
class RoundFloatManual(object):
    def __init__(self,val):
        assert isinstance(val,float),\
            "Value must be a float"
        self.value = round(val,2)
    def __str__(self):
        return '%.2f' % self.value
rfm = RoundFloatManual(4.288)
print rfm

# -*- coding:utf-8 -*-
 
class Time60(object):
    '用于小时与分钟的加减法运算'
    def __init__(self, hr=0, min=0):
        self.hr = hr
        self.min = min
    def __str__(self):
        return '%d:%d' % (self.hr, self.min)
    __repr__ = __str__
    def __add__(self, other):
        a = divmod(self.min + other.min, 60)
        return self.__class__(self.hr + other.hr + a[0], a[1])
    def __iadd__(self, other):
        a = divmod(self.min + other.min, 60)
        self.hr += self.hr + other.hr
        self.min += a[1]
        return self
 
a = Time60(10,30)
b = Time60(8,45)
print a+b