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Cocoa on-rails-5th
 

Cocoa on-rails-5th

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    Cocoa on-rails-5th Cocoa on-rails-5th Presentation Transcript

    • Ruby
      • Cocoa on Rails
      • 5th
      • 2011-7-25
    • 这节课讲什么
      • Ruby 语法
    • Interactive Ruby
      • 开始 -> 程序 ->Ruby 1.9.2->
      • Interactive Ruby
    • Hello World
      • Irb>puts “hello world”
      • =>”hello world”
      • => nil
    • 计算器
      • irb> 1 + 2
      • => 3
    • 数学公式
      • Irb>Math.sqrt(9)
      • => 3.0
    • 函数
      • irb> def h
      • irb> puts "Hello World!"
      • irb> end
      • => nil
      • => h
      • => h()
    • 可接受参数的函数
      • irb> def h(name)
      • irb> puts "Hello #{name}!"
      • irb> end
      • irb> h(“Junli")
    • 将代码放入文件
      • puts “hello world”
      • 保存为 hello.rb
      • 在命令行下,运行 ruby hello.rb
    • 下一课程
      • 待定