Hash

$B%O%C%7%e%F!<%V%k(B($BO"A[G[Ns$H$b8F$V(B)$B$N%/%i%9!%%O%C%7%e$OG$0U$N(B $B

{a=>b,...}

$B%O%C%7%e$N3JG<$KMQ$$$i$l$k%O%C%7%eCM$N7W;;$K$O!$(B hash$B%a%=%C%I$,;H$o(B $B$l$^$9!%(B $B%-!<$H$7$FM?$($?%*%V%8%'%/%H$NFbMF$,JQ2=$7!$%a%=%C%I(B hash$B$NJV$9CM$,JQ$o$k$H%O%C%7%e$+$iCM$,(B $BArray, Hash$B$J$I$N%$%s%9%?%s%9(B $B$O%-!<$K8~$-$^$;$s!%J8;zNs$r%-!<$H$7$FM?$($k$H!$J8;zNs$r%3%T!<(B $B$7!$%3%T!<$r99?7IT2D$K@_Dj$7$F%-!<$H$7$F;HMQ$7$^$9!%%-!<$H$7(B $B$F;H$o$l$F$$$kJ8;zNs$r99?7$7$h$&$H$9$k$HNc30$,H/@8$7$^$9!%(B

$B%9!<%Q!<%/%i%9(B:

Object

$B%$%s%/%k!<%I$5$l$F$$$k%b%8%e!<%k(B:

Enumerable

$B%/%i%9%a%=%C%I(B:

Hash[key, value...]: $B?7$7$$%O%C%7%e$r@8@.$7$^$9!%0z?t$OI,$:6v?t8D;XDj$7$J$1$l$P$J(B $B$j$^$;$s(B($B4q?tHVL\$,%-!
new([ifnone]): $B6u$N?7$7$$%O%C%7%e$r@8@.$7$^$9!%(Bifnone$B$O%-!<$KBP(B $B1~$9$kCM$,B8:_$7$J$$;~$N%G%U%)%k%HCM$G$9!%(B

$B%a%=%C%I(B:

self [key]

key$B$K4XO"$E$1$i$l$?CM$rJV$7$^$9!%3:Ev$9$k%-!<$,EP(B $BO?$5$l$F$$$J$$;~$K$O!$%G%U%)%k%HCM(B($B@_Dj$5$l$F$$$J$$;~$K$O(B nil)$B$rJV$7$^$9!%(B

self [key]= value

key$B$KBP$7$F(Bvalue$B$r4XO"$E$1$^$9!%(B value$B$,(Bnil$B$N;~!$(Bkey$B$KBP$9(B $B$k4XO"$rnil$B$rCM$K$H$k$3$H$,$G$-$^$;$s!%(B

clear

$B%O%C%7%e$NCf?H$r6u$K$7$^$9!%(B

default

$B%O%C%7%e$N%G%U%)%k%HCM$rJV$7$^$9!%(B

default=(value)

$B%O%C%7%e$N%G%U%)%k%HCM$r(Bvalue$B$K@_Dj$7$^$9!%BP1~$9(B $B$kCM$,B8:_$7$J$$%-!<$G8!:w$7$?;~$K$O$3$NCM$rJV$7$^$9!%(B

delete(key)

key$B$KBP$9$k4XO"$rkey$B$KBP1~$9$kCM$,B8:_$7$J$$;~$K$O(B nil$B$rJV$7$^$9!%(B

$B%V%m%C%/$,M?$($i$l$?;~$K$O(Bkey$B$K%^%C%A$9$k$b$N$,$J(B $B$+$C$?;~$KI>2A$5$l$^$9!%(B

delete_if {|key, value|...}

reject!{|key, value|...}

key$B$H(Bvalue$B$r0z?t$H$7$F%V%m%C%/$rI>2A$7(B $B$?CM$,??$G$"$k;~!$MWAG$r:o=|$7$^$9!%(B

clone

dup

$B%l%7!<%P$HF1$8FbMF$r;}$D?7$7$$%O%C%7%e$rJV$7$^$9!%%U%j!<%:$7(B $B$?%O%C%7%e$N(Bclone$B$OF1MM$K%U%j!<%:$5$l$?%O%C%7%e(B $B$rJV$7$^$9$,!$(Bdup$B$OFbMF$NEy$7$$%U%j!<%:$5$l$F$$(B $B$J$$%O%C%7%e$rJV$7$^$9!%(B

each {|key, value|...}

each_pair {|key, value|...}

key$B$H(Bvalue$B$r0z?t$H$7$F%V%m%C%/$rI>2A$7(B $B$^$9!%(B

each_key {|key|...}

key$B$r0z?t$H$7$F%V%m%C%/$rI>2A$7$^$9!%(B

each_value {|value|...}

value$B$r0z?t$H$7$F%V%m%C%/$rI>2A$7$^$9!%(B

empty?

$B%O%C%7%e$,6u$N;~??$rJV$7$^$9!%(B

fetch(key[,default])

key$B$K4XO"$E$1$i$l$?CM$rJV$7$^$9!%3:Ev$9$k%-!<$,EP(B $BO?$5$l$F$$$J$$;~$K$O(Bdefault$B$rJV$7$^$9!%%V%m%C%/$,(B $BM?$($i$l$?;~$K$O3:Ev$9$k%-!<$,EP(B $BO?$5$l$F$$$J$$;~$K$=$N%V%m%C(B $B%/$rI>2A$7$?CM$rJV$7$^$9!%(B

freeze

$B%O%C%7%e$NFbMF$NJQ99$r6X;_$7$^$9!%(B

frozen?

$B%O%C%7%e$NFbMF$N99?7$,6X;_$5$l$F$$$k;~??$rJV$7$^$9!%(B

has_key?(key)

key?(key)

include?(key)

$B%O%C%7%e$,(Bkey$B$r%-!<$H$7$F;}$D;~??$rJV$7$^$9!%(B

has_value?(value)

value?(value)

$B%O%C%7%e$,(Bvalue$B$rCM$H$7$F;}$D;~??$rJV$7$^$9!%(B

index(val)

val$B$KBP1~$9$k%-!<$rJV$7$^$9!%(B $BBP1~$9$kMWAG$,B8:_$7$J$$;~$K$O(B nil$B$rJV$7$^$9!%(B

indexes(key_1,..., key_n)

indices(key_1,..., key_n)

$B0z?t$G;XDj$5$l$?%-!<$r;}$DCM$NG[Ns$rJV$7$^$9!%(B

keys

$BA4%-!<$NG[Ns$rJV$7$^$9!%(B

length

size

$B%O%C%7%e$NMWAG$N?t$rJV$7$^$9!%(B

invert

$BCM$+$i%-!<$X$N%O%C%7%e$rJV$7$^$9!%(B

rehash

$B%-!<$N%O%C%7%eCM$r:F7W;;$7$^$9!%%-!<$K$J$C$F$$$k%*%V%8%'%/%H$N%O%C%7%e(B $BCM$,JQ$o$C$F$7$^$C$?>l9g!$$3$N%a%=%C%I$r;H$C$F%O%C%7%eCM$r:F7W;;$7$J$$(B $B8B$j!$$=$N%-!<$KBP1~$9$kCM$r

replace(other)