From: Yukihiro Matsumoto Date: 2005-02-19T21:23:19+09:00 Subject: Re: IO#seek with SEEK_SET Hi, In message "Re: IO#seek with SEEK_SET" on Sat, 19 Feb 2005 19:39:44 +0900, Martin DeMello writes: |Does calling IO#seek on a file with the SEEK_SET option internally do |something efficient if the position I want to seek to is ahead of the |current position? Or does it always do a rewind and then seek? It uses fseek(3) internally, so it's probably doing "something efficient", rather than "rewind then seek". matz.