begin
    #有可能发生错误的处理
    puts ">处理开始"
    #raise "my raise error!"
    #10 / 0
rescue => e
    #错误发生时
    puts "X错误发生!"
    puts e
else
    #正常处理时
    puts "O正常处理"
ensure
    #最后处理，无论是否发生处理(final)
    puts "_最后的扫尾处理"
end

#upto
2.upto(5) do |i|
    puts "updo=" + i.to_s
end

#downto
5.downto(2) do |i|
    puts "downto=" + i.to_s
end

#each循环
gamelist = ["塞尔达传说", "超级马里奥", "开心剪纸"]

gamelist.each { |game|
    puts game
}

gamelist.each do |game|
    puts game
end

gamelist.each_with_index do |game,i|
    puts i.to_s + "." + game
end

#times循环
5.times do |i|
    puts "第 #{i+1} 次times循环"
end

#step循环
1.step(10,3) do |i|
    puts "#{i}"
end

#循环数组
gamelist = ["塞尔达传说", "超级马里奥", "开心剪纸"]
for game in gamelist do
    puts game
end

#循环1-5
for num in 1..5 do
    puts num
end

#循环1-4
for num in 1...5 do
    puts num
end

#while循环
index = 0
while index < 5 do
    puts "while.index=" + index.to_s
    index+=1
end

#untile
index = 0
until index == 5 do
    puts "until.index=" + index.to_s
    index+=1
end

#---------------#
# NBA球员工资估算
#---------------#
point_per_game = 15

if point_per_game >= 30
    puts "3500万美元/年"
elsif point_per_game >= 20
    puts "2000万美元/年"
else
    puts "中产合同吧"
end

#---------------#
# 买这个游戏吗？
#---------------#
#《绝地求生》(PUBG) 
PUBG_SteamPrice = 40

#unless=只要不
unless PUBG_SteamPrice < 50
    #大于等于50的时候
    puts "《绝地求生》这个游戏虽然好玩，但是价格太贵，我还是玩学习版吧。"
else
    #小于50的时候
    puts "《绝地求生》降价了，大家要支持正版啊！剁手买！"
end

#---------------#
# 今天是星期几？
#---------------#
week_day = 0

case week_day
    when 0,7
        puts "星期日"
    when 1
        puts "星期一"
    when 2
        puts "星期二"
    when 3
        puts "星期三"
    when 4
        puts "星期四"
    when 5
        puts "星期五"
    when 6 
        puts "星期六"
    else
        raise Exception.new("没这天")
end

module BaseFunc
    Version = "0.0.1"

    def v
        return Version
    end

    def add(a, b)
        return a + b
    end

    def self.showVersion
        return Version
    end

    #将v方法定义范围静态方法
    module_function :v
end

puts BaseFunc::Version
puts BaseFunc.showVersion
puts BaseFunc::showVersion
puts BaseFunc.v
#puts BaseFunc.add(10, 30)

class BaseClass include BaseFunc
end

puts "=============================="
puts BaseClass::Version
# puts BaseClass.showVersion
# puts BaseClass.v

myCls = BaseClass.new
puts myCls.add(10,20)

class Game
    def initialize(id, title, price)
        @id = id
        @title = title
        @price = price
    end

    def showGame
        puts @id + ", " + @title + ", " + @price.to_s
    end

    def self.toStr
        puts "I love this game."
    end
end

class SteamGame < Game
    def SteamInfo
        puts "G胖说了,STEAM要统一各个平台，完成Game All In One。"
    end
end

SteamGame.toStr

mygame = SteamGame.new("nobunaga-taishi", "信長の野望・大志", 450)
mygame.showGame
mygame.SteamInfo

class Game
    def initialize(id, title, price)
        @id = id
        @title = title
        @price = price
    end

    def showGame
        puts @id + ", " + @title + ", " + @price.to_s
    end

    def self.toStr
        puts "I love this game."
    end
end

zelda = Game.new("zelda", "ゼルダの伝説", 350)
zelda.showGame
#常常错误的滋味
#zelda.toStr

Game.toStr
Game::toStr

#180俱乐部计划
FG = "50" #投篮命中率
P3 = "40" #三分命中率
FT = "90" #罚球命中率

puts FG + P3 + FT
puts FG.to_i + P3.to_i + FT.to_i
puts (FG.to_i + P3.to_i + FT.to_i).to_s + " 俱乐部"

#整数2小数
puts FG.to_i
puts FG.to_i.to_f

#小数2整数
puts 1234.5678
puts 1234.5678.to_i

mvp_rank = {
    "curry" => 28.1,
    "harden" => 30.3,
    "lebron" => 26
}

puts mvp_rank
puts mvp_rank["harden"]

# 类似JSON使用
player = {
    name: "harden",
    age: 28,
    point: 30.3
}

puts player
puts player[:name] + ", " + player[:age].to_s + ", " + player[:point].to_s