# 常量
Name = "xiaoming"
# 变量
age = 18
# 全局变量
$all = "hello world"

bl = false
num = 18
str = "hello wolrd"
array = [1, 2, 3]
hash = {name: "xiaoxing", age: 18}

# 方法
def testfn name, age
    puts "#{name},#{age}"    
end
testfn "xiaoming", 18

# lambda 表达式
lmd = lambda do |param|
    puts "param is #{param}"
end
lmd.call "xiaoming"

# 对象
class Person
    # 会生成getter和setter方法
    attr_accessor :name
    attr_accessor :age
    
    # 构造函数
    def initialize name, age
        @name = name
        @age = age
    end

    # 实例方法

    # 类方法

    # 封装 继承 多肽
end

testNum = 10
if testNum > 10 
    puts "大于10"
elsif testNum > 5
    puts "大于5"
else 
    puts "小于5"
end


case testNum
when 10
    puts "等于10"
else
    puts "未匹配"
end

for i in 1..5 do
    puts "i = #{i}"
end

counter = 0
while counter < 10 do 
    counter = counter + 1
    puts "counter = #{counter}"
end