Issue #20497 has been updated by shyouhei (Shyouhei Urabe). Previous discussions: - https://bugs.ruby-lang.org/issues/11715 @akr thinks it's a good idea to have an anonymous file, then name it afterwards. - https://bugs.ruby-lang.org/issues/13743 @akr is against the pull request which actually adds such feature (maybe it was the implementation and the idea was OK though). Because the proposed Tempfile.create_io returns a non-File IO instance, there is no way to assign a path in this ticket. ---------------------------------------- Feature #20497: Tempfile.create_io https://bugs.ruby-lang.org/issues/20497#change-108382 * Author: akr (Akira Tanaka) * Status: Open ---------------------------------------- I propose Tempfile.create_io. It is similar to Tempfile.create but the actual file is unlinked before returning the method. https://github.com/ruby/ruby/pull/10803 Purpose: Sometimes, applications need a temporary file but it is not required to access via a pathname. In this case, the created file can be unlinked just after temporary file creation. This removes the obligation of removing the file from applications. So, Tempfile.create_io is easier to use than Tempfile.create. Example: ``` tmpio = Tempfile.create_io # => #<IO:fd 5> tmpio.class # => IO tmpio.path # => nil tmpio.stat.mode.to_s(8) # => "100600" tmpio.puts "foo" tmpio.rewind tmpio.read # => "foo\n" tmpio.close ``` Portability: This feature (unlink just after file creation) is supported on Unix for a long time. Linux 3.11 has O_TMPFILE to create an unnamed file. The current implementation uses it. I heard that it is possible on Windows. (O_SHARE_DELETE?) I'm not sure how to use it. -- https://bugs.ruby-lang.org/