From: Urabe Shyouhei <shyouhei@...>
Date: 2010-03-23T11:28:44+09:00
Subject: [ruby-dev:40734] Re: [Feature #2673] the length for an enumerator generated by Array#permutation and Array#combination

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Kenta Murata =E3=81=95=E3=82=93=E3=81=AF=E6=9B=B8=E3=81=8D=E3=81=BE=E3=81=
=97=E3=81=9F:

>> =E3=82=84=E3=82=8B=E3=81=A8=E3=81=97=E3=81=9F=E3=82=89=E3=80=81length =
=E3=81=AF=E3=80=8CEnumerator =E7=94=9F=E6=88=90=E6=99=82=E3=81=A7=E3=81=AE=
=E9=95=B7=E3=81=95=E3=82=92=E8=BF=94=E3=81=99=E3=80=8D=E3=81=A8=E6=8F=83=E3=
=81=88=E3=82=8B=E3=81=AE=E3=81=8C
>> =E3=81=84=E3=81=84=E3=81=AE=E3=81=A7=E3=81=AF=E3=81=AA=E3=81=84=E3=81=A7=
=E3=81=97=E3=82=87=E3=81=86=E3=81=8B=E3=80=82
>=20
> =E8=89=AF=E3=81=84=E3=81=A8=E6=80=9D=E3=81=84=E3=81=BE=E3=81=99=E3=80=82=


=E3=81=84=E3=82=84=E3=80=81=E3=81=A9=E3=81=86=E3=81=AA=E3=82=93=E3=81=A7=E3=
=81=97=E3=82=87=E3=81=86=E3=81=AD=E3=81=88=E3=80=82=E3=81=8A=E3=81=8A=E3=82=
=82=E3=81=A8=E3=81=AE=E5=89=8D=E6=8F=90=E6=9D=A1=E4=BB=B6=E3=81=A7=E3=81=82=
=E3=82=8B

> Array#permutation =E3=81=A8 Array#combination =E3=81=8C=E7=94=9F=E6=88=90=
=E3=81=99=E3=82=8B enumerator
> =E3=81=AF=E8=A6=81=E7=B4=A0=E6=95=B0=E3=81=8C=E7=A2=BA=E5=AE=9A=E3=81=A7=
=E3=81=8D=E3=81=BE=E3=81=99=E3=81=8C=E3=80=81

=E3=81=AB=E7=96=91=E5=95=8F=E3=81=8C=E6=8A=95=E3=81=92=E3=81=8B=E3=81=91=E3=
=82=89=E3=82=8C=E3=81=A6=E3=81=84=E3=82=8B=E3=81=AE=E3=81=A0=E3=81=A8=E6=80=
=9D=E3=81=84=E3=81=BE=E3=81=97=E3=81=9F=E3=81=8C=E3=80=82=E3=81=9D=E3=81=97=
=E3=81=A6to_a=E3=81=99=E3=82=8C=E3=81=B0=E8=A6=81=E7=B4=A0=E6=95=B0=E3=81=
=AE=E5=A4=89=E5=8C=96=E3=81=AB=E3=81=AF
(Array=E3=81=AE=E3=82=B3=E3=83=B3=E3=83=86=E3=82=AF=E3=82=B9=E3=83=88=E3=81=
=A7)=E5=AF=BE=E5=BF=9C=E3=81=A7=E3=81=8D=E3=82=8B=E3=82=8F=E3=81=91=E3=81=
=A0=E3=81=8B=E3=82=89=E3=80=81=E3=80=8Clength=E3=81=8C=E7=9F=A5=E3=82=8A=E3=
=81=9F=E3=81=91=E3=82=8C=E3=81=B0Array=E3=81=AB=E3=81=9B
=E3=82=88=E3=80=8D=E3=81=A8=E3=81=84=E3=81=86=E3=81=AE=E3=81=AF=E3=81=9D=E3=
=82=8C=E3=81=AA=E3=82=8A=E3=81=AB=E5=A6=A5=E5=BD=93=E3=81=AA=E6=8C=87=E9=87=
=9D=E3=81=AA=E3=82=88=E3=81=86=E3=81=AB=E3=82=82=E6=80=9D=E3=81=86=E3=81=AE=
=E3=81=A7=E3=81=99=E3=81=91=E3=81=A9=E3=82=82=E3=80=82


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