WebbRuby ruby 文件操作，如何重新开启 IO 流？ IOError:closed stream ginchenorlee · 2013年08月20日 · 最后由 zhangyuan 回复于 2013年08月20日 · 3790 次阅读 Webbclass IOError - RDoc Documentation class IOError Raised when an IO operation fails. File. open ( "/etc/hosts") { f f << "example" } #=> IOError: not opened for writing File. open ( …

ruby 文件操作，如何重新开启 IO 流？IOError:closed stream · Ruby …

Webb6 feb. 2014 · And this is how you should write it in Ruby (: File.open("foo.dat", "w") { f f.puts "BKP_DATE: " IO.readlines(fullpath).each do line f.puts line end } # f is automatically … WebbQuestion: Read the file and write file in Ruby Can't seem to get my data to be read as an integer and print out the data. plus there is a close stream (IOError) for count = … teaching reflection

【動作確認】RubyのFile.open()にブロックを与えると処理後にク …

WebbNote that some IO failures raise SystemCallErrors and these are not subclasses of IOError: File . open ( "does/not/exist" ) #=> Errno::ENOENT: No such file or directory - … Webb6 okt. 2008 · Ruby-Forum Stream closed (IOError) Ruby ericw October 5, 2008, 6:21am #1 This code: puts "closed?: %s" % @socket.closed?.to_s begin @socket.close rescue … WebbLine 231 is the @socket.close line. Nothing gets done to the socket after this, or if it is, it's not getting to it because it crashes on @socket.close. teaching reference letter