Bug #7873: StringIO does not respond to to_io

• Status: Rejected
• Assignee: -
• Target version: -
• ruby -v: ruby 1.9.3p385 (2013-02-06 revision 39114) [x86_64-linux]

[ueno (Daiki Ueno)]

In my project, I'm using "object.respond_to? :to_io" to check if the object is IO-ish[1].
(I heard that this is the preferred way to do that some time ago.)

However, StringIO does not seem to define to_io. Is this intended?

[1] https://github.com/ueno/ruby-gpgme/pull/18

[drbrain (Eric Hodel)]

• Category set to ext
• Status changed from Open to Rejected

It is intended. StringIO only pretends to be an IO, it is not backed by a socket or file like an IO is.