# Hash\[\] $B$N0z?t$,(B Array $B$N\>l9g$N?6$kIq$$(B

**URL:** <https://www.ruby-forum.com/t/hash-b-n0z-t-b-array-b-n-l9g-n-6-kiq-b/190816>\
**Category:** Development\
**Created:** [June 28, 2010, 5:28pm UTC](https://www.ruby-forum.com/t/hash-b-n0z-t-b-array-b-n-l9g-n-6-kiq-b/190816 "2010-06-28T17:28:54Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecd19e/32.png) [@SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/u/SSSBSHS_SSSSS5SRSmS)\
**Post date:** [June 28, 2010, 5:28pm UTC](https://www.ruby-forum.com/t/hash-b-n0z-t-b-array-b-n-l9g-n-6-kiq-b/190816/1 "2010-06-28T17:28:54Z")

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e$B$H$\_$?$G$9!#e(B

Hash[] e$B$N0z?t$,#1$D$NG[Ns$G!“$+$D$=$NMWAG$,$5$i$Ke(B  
1e$B8D$+e(B2e$B8D$NMWAG$NG[Nse(B  
e$B$N\>l9g!”$=$l$r%-!\<$HCM$N%Z%"$H$\_$J$7$Fe(B(1e$B8D$N\>l9g$OCM$Oe(B  
nil)e$B!"e(BHash e$B%\*%Ve(B  
e$B%8%'%/%H$r@8@.$9$k$h$&$G$9!#e(B

ary = [[1,2],[3,4],[5]]  
Hash[ary] #=\> {5=\>nil, 1=\>2, 3=\>4}

1.8.7 e$B$G$be(B 1.9.2 e$B$G$bF1MM$G$9!#e(B

e$B%^%K%e%"%ke(B [http://doc.okkez.net/static/187/class/Hash.html](http://doc.okkez.net/static/187/class/Hash.html)  
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e$B$H$$$&$+!“\<!$N5-=R$,$”$C$?$N$G$9$,!"e(B

| (4) e$B%-!\<$dCM$,G[Ns$@$He(B (2) e$B$de(B (3) e$B$NJ}K!$O;H$($J$$$N$GCOF;$KBeF~$9$k$7$+$J$$e(B  
|  
| h = Hash.new  
| alist = [[1,[“a”]], [2,[“b”]], [3,[“c”]]]  
| alist.each {|k,v|  
| h[k] = v  
| }  
| p h  
|  
| #=\> {1=\>[“a”], 2=\>[“b”], 3=\>[“c”]}

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alist = [[1,[“a”]], [2,[“b”]], [3,[“c”]]]  
Hash[alist] #=\> {1=\>[“a”], 2=\>[“b”], 3=\>[“c”]}

e$B$3$l$,%^%K%e%"%k$K:$C$F$J$$$N$O!“C1$KO3$l$F$$$k$@$1$G$7$g$&$+!#$=$l$He(B  
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Subversion  
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* * *

r13803 | matz | 2007-11-02 15:30:26 +0900 (e$B6be(B, 02 11e$B7ne(B 2007)  
| 8 lines

- array.c (rb\_ary\_assoc): check and convert inner arrays (assocs)  
using #to\_ary.

- hash.c (rb\_hash\_s\_create): check and convert argument hash  
using #to\_hash.

- hash.c (rb\_hash\_s\_create): Hash#[] now takes assocs as source of  
hash conversion.

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**Author:** ![SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecd19e/32.png) [@SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/u/SSSBSHS_SSSSS5SRSmS)\
**Post date:** [June 28, 2010, 5:45pm UTC](https://www.ruby-forum.com/t/hash-b-n0z-t-b-array-b-n-l9g-n-6-kiq-b/190816/2 "2010-06-28T17:45:54Z")

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e$B$^$D$b$He(B e$B$f$-$R$m$G$9e(B

In message “Re: [ruby-dev:41760] Hash[] e$B$N0z?t$,e(B Array  
e$B$N\>l9g$N?6$kIq$$e(B”  
on Tue, 29 Jun 2010 00:28:41 +0900, e$B$H$\_$?$^$5$R$me(B  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes:

|e$B$3$l$,%^%K%e%"%k$K:$C$F$J$$$N$O!“C1$KO3$l$F$$$k$@$1$G$7$g$&$+!#$=$l$He(B  
|e$B$b2?$+$N;v\>p$K$h$j%^%K%e%”%kL$5-:$,A\*Br$5$l$?$N$G$7$g$&$+!#e(B

e$BO3$l$F$$$k$@$1$@$H;W$$$^$9!#e(B

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**Author:** ![SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecd19e/32.png) [@SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/u/SSSBSHS_SSSSS5SRSmS)\
**Post date:** [June 28, 2010, 6:06pm UTC](https://www.ruby-forum.com/t/hash-b-n0z-t-b-array-b-n-l9g-n-6-kiq-b/190816/3 "2010-06-28T18:06:24Z")

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okkez e$B$G$9!#e(B

2010e$BG/e(B6e$B7ne(B29e$BF|e(B0:28 e$B$H$\_$?$^$5$R$me(B  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> e$B$3$l$,%^%K%e%"%k$K:$C$F$J$$$N$O!“C1$KO3$l$F$$$k$@$1$G$7$g$&$+!#$=$l$He(B  
> e$B$b2?$+$N;v\>p$K$h$j%^%K%e%”%kL$5-:$,A\*Br$5$l$?$N$G$7$g$&$+!#e(B

e$B$^$D$b$H$5$s$N8@$&DL$jO3$l$F$$$k$@$1$G$9!#e(B  
e$B$k$j$^%W%m%8%'%/%H$NJ}$G%A%1%C%H$r5/I\<$7$F$\*$-$^$7$?!#e(B  
e$B6a$$Fb$K=q$-$^$9!#e(B

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**Author:** ![SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecd19e/32.png) [@SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/u/SSSBSHS_SSSSS5SRSmS)\
**Post date:** [June 29, 2010, 1:31am UTC](https://www.ruby-forum.com/t/hash-b-n0z-t-b-array-b-n-l9g-n-6-kiq-b/190816/4 "2010-06-29T01:31:58Z")

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e$B$H$\_$?$G$9!#e(B

On Tue, 29 Jun 2010 00:45:27 +0900  
Yukihiro M. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> e$BO3$l$F$$$k$@$1$@$H;W$$$^$9!#e(B

On Tue, 29 Jun 2010 01:05:54 +0900  
okkez [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> e$B$^$D$b$H$5$s$N8@$&DL$jO3$l$F$$$k$@$1$G$9!#e(B  
> e$B$k$j$^%W%m%8%'%/%H$NJ}$G%A%1%C%H$r5/I\<$7$F$\*$-$^$7$?!#e(B  
> e$B6a$$Fb$K=q$-$^$9!#e(B

e$B$"$j$,$H$&$4$6$$$^$9!#e(B

e$B;H$C$F$h$$$b$N$+$I$&$+LB$C$F$?$N$G$9$,!"0B?4$7$F;H$&$3$H$K$7$^$9e(B  
🙂

---

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**Author:** ![SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/ecd19e/32.png) [@SSSBSHS\_SSSSS5SRSmS](https://www.ruby-forum.com/u/SSSBSHS_SSSSS5SRSmS)\
**Post date:** [June 29, 2010, 3:58am UTC](https://www.ruby-forum.com/t/hash-b-n0z-t-b-array-b-n-l9g-n-6-kiq-b/190816/5 "2010-06-29T03:58:17Z")

</div>

e$B@.@%$G$9!#e(B

2010e$BG/e(B6e$B7ne(B29e$BF|e(B0:28 e$B$H$\_$?$^$5$R$me(B  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid):

> e$B%^%K%e%"%ke(B [http://doc.okkez.net/static/187/class/Hash.html](http://doc.okkez.net/static/187/class/Hash.html) e$B$K$O$3$NMQK!e(B  
> e$B$O:$C$F$$$^$;$s$G$7$?!#e(B

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e$B$N$3$H$G$9!#e(B  
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e$B$”$k;EMM$,$I$NDxEY?d\>)$5$l$k$b$N$+$J$I$N\>pJs$b4^$`$b$N$G$9!#e(B

e$B$k$j$^$O0J\>e$K=R$Y$?$h$&$J$b$N$G$O$J$/!"e(B  
e$BC1=c$Ke(B Ruby e$B%f!\<%6$N$?$a$N$b$N$G$9!#e(B