Exception: IOError

Inherits:

StandardError

• Object
• Exception
• StandardError
• IOError

Defined in:

io.c,
io.c

Overview

Raised when an IO operation fails.

File.open("/etc/hosts") {|f| f << "example"}
  #=> IOError: not opened for writing

File.open("/etc/hosts") {|f| f.close; f.read }
  #=> IOError: closed stream

Note 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 - does/not/exist

Direct Known Subclasses

EOFError

Method Summary

Methods inherited from Exception

#==, #backtrace, #backtrace_locations, #cause, #exception, exception, #initialize, #inspect, #message, #set_backtrace, #to_s

Constructor Details

This class inherits a constructor from Exception