@leozwa 那样不可以，如果返回的是个数组，那 readable 变量就会变成数组变量

This method will generate warnings that the family, port, and host variables are unused.

def get_ip(sock)
  family, port, host, address = sock.peeraddr
  address
end

Using underscores will stop the warnings, but lose the self-documenting nature of the code

def get_ip(sock)
  _, _, _, address = sock.peeraddr
  address
end

As of Ruby 2.0.0 we can get the best of both worlds by starting the variables with an _

def get_ip(sock)
  _family, _port, _host, address = sock.peeraddr
  address
end

@betterthornbird 你那边的老板不认识，估计难

@betterthornbird 能内部 transfer 吗？

:plus+1:

:plus1:

#22 楼 @Teddy 昨天讲的 command line 挺不错的，command line slides 做的也很炫。有没有用过 trollop？好像目前大多数 gem 用得都是它

@gene_wu 我要去旁听

#23 楼 @kevinclcn kevinclcn at gmail.com

来晚啦？

@gene_wu 过去旁听可以吗？

@gene_wu 参加需要什么条件吗？