[ruby-dev:40729] Re: [Feature #2673] the length for an enumerator generated by Array#permutation and Array#combination

=1B$B$`$i$?$G$9!#=1B(B

On 2010/03/22, at 12:42, Yusuke ENDOH wrote:

> 2010=1B$BG/=1B(B3=1B$B7n=1B(B14=1B$BF|=1B(B13:05 _ wanabe =
<[e-mail]>:
>> Enumerator#length =
=1B$B$O!"0lHL$KDj5A$5$l$F$$$?J}$,$J$K$+$HJXMx$J5$$,$7$^$9!#=1B(B
>> =1B$B$^$?!"F1$8%/%i%9$N%*%V%8%'%/%H$,=1B(B NoMethodError =
=1B$B$r5/$3$7$?$j5/$3$5$J$+$C$?$j$9$k$N$O=1B(B
>> =
=1B$B>/$7J,$+$j$K$/$$$N$G!"$J$k$Y$/$J$iHr$1$?J}$,$$$$$h$&$K;W$$$^$9!#=1B(B=

>> =1B$BD9$5$,Dj5A$G$-$J$$$b$N$K$D$$$F$O!"=1B(BRuntimeError =
=1B$B$K$9$k$+=1B(B nil =1B$B$rJV$9$N$O$I$&$G$7$g$&$+!#=1B(B
>>=20
>> =1B$B$H$j$"$($:=1B(B nil =
=1B$B$rJV$9$h$&$K$7$F!"$D$$$G$@$C$?$N$GNc$H$7$F=1B(B Array#each =
=1B$B$K$D$$$F$b=1B(B
>> =1B$BD9$5$rJV$9$h$&$K$7$?%Q%C%A$r=3Dq$-$^$7$?!#=1B(B
>> enumerator_length() =
=1B$B$r9)IW$9$l$PB>$K$b1~MQ$G$-$k$h$&$K$7$^$7$?!J$H$$$&$D$b$j$G$9!K!#=1B(B=

>=20
>=20
> length =1B$B$,=1B(B Enumerator =
=1B$B@8@.;~$K3NDj$G$-$k>l9g$O$I$N$/$i$$$"$k$s$G$7$g$&!#=1B(B
> Array#each =1B$B$G$b!"85G[Ns$,=3Dq$-49$($i$l$?>l9g$r9M$($k$H:$$j$^$9!#=1B=
(B

snip

> =1B$B$d$k$H$7$?$i!"=1B(Blength =1B$B$O!V=1B(BEnumerator =
=1B$B@8@.;~$G$ND9$5$rJV$9!W$HB7$($k$N$,=1B(B
> =1B$B$$$$$N$G$O$J$$$G$7$g$&$+!#=1B(B

=1B$BNI$$$H;W$$$^$9!#=1B(B

--
Kenta Murata
OpenPGP FP =3D FA26 35D7 4F98 3498 0810 E0D5 F213 966F E9EB 0BCC

=1B$BK\$r=3Dq$-$^$7$?=1B(B!!
=1B$B!X=1B(BRuby =1B$B5U0z$-%l%7%T!Y=1B(B =
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