https://ruby-china.org/rehmet I develop and make product en-us <p><code>def add(a, b): return a+b</code> 或者 <code>twice = lambda x: x*2</code></p> rehmet Mon, 03 Dec 2012 18:40:24 +0800 https://ruby-china.org/topics/7277 https://ruby-china.org/topics/7277