[ruby-dev:43670] Re: DateTime.new! and DateTime.jd

>> =1B$B<!$K=1B(B[ruby-core:36802]=1B$B$NJ}$O=1B(B
>>=20
>>   DateTime.jd raises 'invalid fraction' when called with more than =
one argument
>>=20
>> =
=1B$B$3$l$O$D$^$j!"!V=1B(BDateTime=1B$B$N=1B(Bfraction=1B$B$,%<%m$G$J$$$H$=
-$K!"$5$i$K=1B(B
>> =1B$B;~4V$dIC$r;XDj$9$k$3$H$O0UL#$,$J$$$N$G%(%i!<$G$"$k!W$H$$$&$3=1B(B
>> =1B$B$H$@$H?dB,$7$^$7$?!#@5$7$$$G$9$+!)=1B(B
>>=20
>> [En]
>> The newser version of DateTime checks adding hour|minute to
>> DateTime already have fraction of a day.
>=20
> =1B$B5DO@$NH>J,0J2<$7$+$o$+$i$J$$$G$9$,!"$3$l$O=1B(B
>=20
> The newer version of DateTime does not allow to add hours/minutes to =
DateTime objects which already have a fraction of a day.
>=20
> =1B$B$N0UL#$G$7$g$&$+!#=1B(B


Perhaps, this is not the case. =20
The discussion is on arguments of jd; that is=1B$B!"=1B(B=20
how to specify the time at initialization and not
whether addition to the object is allowed or not.

jd=1B$B$N$[$&$O=1B(B
jd(jd=3D0, h=3D0, min=3D0, s=3D0, of=3D0, sg=3DITALY)
=1B$B$H$$$&$3$H$K$J$C$F$$$k$N$G!"=1B(B

DateTime.jd(Rational(39014323, 16), 0)
=1B$B$H=1B(B
DateTime.jd(Rational(39014323, 16))
=1B$B$,F1$8$G$J$$$H$$$&$N$O<c43M=3DA[$K2q$o$J$$OC$G!"=1B(B
non 0=1B$B$J=1B(Bh, min, ...=1B$B$r;XDj$7$?$H$-$@$1%(%i!<$K=1B(B
=1B$B$9$k$H$$$&9M$(J}$b$"$k$s$8$c$J$$$+$H;W$$$^$9!#=1B(B

The initial bug report was on the difference of
DateTime.jd(Rational(39014323, 16), 0)
and
DateTime.jd(Rational(39014323, 16))

Because jd is documented as=20
jd(jd=3D0, h=3D0, min=3D0, s=3D0, of=3D0, sg=3DITALY)
The difference does not meet to the expectation.
Perhaps, it might be meaningful to raise error
only if non-0 h, min etc is specified along with
fraction date.

Best regards
--=20
Tomoaki NISHIYAMA