关于Ruby常用语法案例累积

变量问题：

类变量和方法变量的区别是什么？

类变量：可以直接使用

方法变量：需要实例化后，才能使用该变量

案例一：

class Person
   @@name = "Tom"
    @@names = "Toms"
    @@age = 10  
  def jek
      @jj = "jj"
      @@bb="wonter"
  end  
  def Person.getName
    return  @@name
  end
  def Person.getNames
      return  @@names
    end  
    def Person.getage
        return  @@age
        end    
end
class Xx < Person
    def aa
        puts "#{@@age}"    
        ll = Person.new
        ll.jek
        @bb = @@bb
        puts "#{@bb}"
        
    end
end
puts Person.getNames
x = Xx.new
x.aa

父子类继承问题：

重写父类方法，或直接使用父类方法。

案例二：

class Father
  def says
    puts "I am father."
  end
  def fatherInfo
    puts "father info."
  end
end
class Son < Father
    def sonInfo
    puts "son info."
    end
end
class Two < Father
    def twoInfo
    puts "two info."
    end
end
#father = Father.new
son = Son.new
two = Two.new
#father.says
#father.fatherInfo
son.says
son.sonInfo
son.fatherInfo
two.twoInfo
two.says

传参问题：

类之间参数的传递与使用。

案例三：

class Father
  def initialize name
    @name = name
  end
  def says
    puts "I am father."
  end
  def fat xx
      @xname = xx
      puts "I am father. #{@xname}"
  end  
end
class Son < Father
  def sayss
    puts "I am son. name: #{@name}"
  end
  def sonsays
      puts "no : #{@name}"
  end  
end
son = Son.new "Tom"
#son.says
#son.sonsays
son.fat "wonter"

循环和判断问题：

涉及数组

案例四：

list1 = ["192.168.48.202","icare","log"]
list2 = ["192.168.48.101","tomcat","sysif"]
length = list1.length
length.times do |t|  
 #print "#{list2[t]} \n"  
 
 if list2[t] = list1[t]
     puts "ok list1:#{list1[t]} \n list2:#{list2[t]}"
 else
     puts "no"
 end
end  
puts "#################################################################"
for i in list1 do  
  print "#{i} "  
end 
puts "\n"

关于引入与通配：

load 'D:\Workspaces\Ruby2\control\CdkPkg.rb'
#load 'D:\Workspaces\Ruby2\control\Cdel_linkP.rb'
class Home 
  def test_linkpkg    
      pkg=ClinkPkg.new
      pkg.linkPkg
   end
#  def test_del_linkP
#      del=Cdel_linkP.new
#      del.del_linkP
#   end
end
t = Home.new
test_methods = t.public_methods.grep(/^test_/)  # 把所有test_开头的方法找出来。
test_methods.each do |test|
  t.send(test)  # 执行每个测试用例。
end

其实不管什么语言，什么语法都是大同小异，关键就看怎么用的好，怎么用的顺手。