[ruby-core:33409] [Ruby 1.9-Feature#4068] Replace current standard Date/DateTime library with home_run

Issue #4068 has been updated by tadayoshi funaba.


i don't have any rights about such an agreement on the ruby development or distribution.
however, i have big doubt to adopt home_run.


$ cat p.rb
require 'date'
require 'date/delta'
a = DateTime.new(2000)
b = DateTime.new(2000,1,1, 0,1,0)
d = Date::Delta.parse('1 second / 3')
p 1000.times.inject(a){|s, | s + d}.strftime('%F %T %20N')

$ cat p-hr.rb
require 'home_run'
a = DateTime.new(2000)
b = DateTime.new(2000,1,1, 0,1,0)
p 1000.times.inject(a){|s, | s + Rational(1, 259200)}.strftime('%F %T %N')


$ ruby192 p.rb
"2000-01-01 00:05:33 33333333333333333333"

$ ruby192 p-hr.rb
"2000-01-01 00:05:33 333333000"

home_run breaks relations time instances and time intervals (differences).
api is not matter.


$ TZ=Asia/Tokyo irb192 -r date
main@192-20100818> RUBY_PLATFORM
#=> "x86_64-linux"
main@192-20100818> 0.size
#=> 8
main@192-20100818>  t = Time.new(1800,1,1)
#=> 1800-01-01 00:00:00 +0919
main@192-20100818> dt = t.to_datetime
#=> #<DateTime: 1800-01-01T00:00:00+09:18 (205502064061/86400,33539/86400,2299161)>
main@192-20100818> dt.strftime('%::z')
#=> "+09:18:59"
main@192-20100818> dt.to_time
#=> 1800-01-01 00:00:00 +0919

$ TZ=Asia/Tokyo irb192 -r home_run
main@192-20100818> RUBY_PLATFORM
#=> "x86_64-linux"
main@192-20100818> 0.size
#=> 8
main@192-20100818> t = Time.new(1800,1,1)
#=> 1800-01-01 00:00:00 +0919
main@192-20100818> dt = t.to_datetime
#=> #<DateTime 1800-01-01T00:00:00+09:18>
main@192-20100818> dt.strftime('%::z')
#=> "::z"
main@192-20100818> dt.strftime('%z')
#=> "+0918"
main@192-20100818> dt.to_time
#=> 1800-01-01 00:00:59 +0919

Time is aware of them, but home_run is not.
so, should we accept this bad hop?

----------------------------------------
http://redmine.ruby-lang.org/issues/show/4068

----------------------------------------
http://redmine.ruby-lang.org