ϥåơ֥(ϢȤƤ)Υ饹ϥåǤդμΥ
ȤǤդμΥ֥ȤؤδϢŤԤȤǤޤ
ϥåϰʲΤ褦ʥϥå弰ǹԤޤ

  {a=>b, ... }

ϥåγǼѤϥåͤη׻ˤϡ
Object#hash [Object/hash] ᥽åɤȤ졢ƱȽˤϡ
Object#eql? [Object/eql?] ᥽åɤȤޤ

ȤͿ֥ȤƤѲ᥽å hash ֤
ͤѤȥϥå夫ͤФʤʤޤ顢Array
Hash ʤɤΥ󥹥󥹤ϥ˸ޤʸ򥭡ȤͿ
ȡʸ򥳥ԡԡ򹹿ԲĤ(freeze)ƥȤ
ѤޤȤƻȤƤʸ򹹿褦Ȥ㳰 
TypeError ȯޤ