ruby-detect

>|ruby|
hoge = [{"hh_val" => 10, "mm_val" => 49}, {"hh_val" => 30, "mm_val" => 106}]

puts hoge.detect{|h| h['hh_val'] > 20}

{"hh_val"=>30, "mm_val"=>106}

||<
※ "find" の別名