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使用Ruby UDPSocket
多態與IO
對象的最佳做法是什麼?我正在寫一個序列化類我的圖書館,並希望把網絡套接字同爲File
或StringIO
對象,UDPSocket
沒有從IO
繼承,但是當我嘗試write_nonblock
,插座引發Errno::EDESTADDRREQ
:我該如何在IO中多態地使用Ruby UDPSocket?
2.4.1 :1 > require 'socket'
=> true
2.4.1 :2 > sock = UDPSocket.new
=> #<UDPSocket:fd 4>
2.4.1 :3 > sock.bind('127.0.0.1', 0)
=> 0
2.4.1 :4 > sock.write_nonblock 'nonblock'
Errno::EDESTADDRREQ: Destination address required
from <internal:prelude>:136:in `__write_nonblock'
from <internal:prelude>:136:in `write_nonblock'
from (irb):4
from /usr/local/rvm/rubies/ruby-2.4.1/bin/irb:11:in `<main>'