From: Yukihiro Matsumoto Date: 2010-11-29T13:56:11+09:00 Subject: [ruby-core:33457] Re: [Ruby 1.9-Feature#4068] Replace current standard Date/DateTime library with home_run Hi, In message "Re: [ruby-core:33445] [Ruby 1.9-Feature#4068] Replace current standard Date/DateTime library with home_run" on Sun, 28 Nov 2010 17:35:28 +0900, tadayoshi funaba writes: |> I am not sure if we need to guarantee granularity less than a nano |> second. Do we? | |?? but, we already have Availability of undocumented feature on the specific version of specific implementation does not assure anything. If we specify rational precision for time and datetime, that means we have to force JRuby, Rubinius etc. to have it too. The point is how much precision we need in real world programs. Akira's intention (Time should represent bintime (2**-64 precision)) expressed in [ruby-core:33447] is reasonable. Do you have any other opinion? matz.