从其中一个散列元素具有最高值的阵列中选择单个散列

Question

从以下散列阵列中，如何选择一个散列，其中timestamp具有最高值？

data = [ 
    {"id" => 1, "timestamp" => 1383314276, "data" => "bea7c82f-f4b2-492a-aba3-033b1a54d9d0"}, 
    {"id" => 2, "timestamp" => 1383314386, "data" => "64ed2ed9-763d-443f-a74e-e7f10cbe783e"}, 
    {"id" => 3, "timestamp" => 1383314331, "data" => "f8cfaa99-ffe0-4d88-8fac-37e4ce462d3a"} 
] 

Answer 1

在这里你可以看到：

data.max_by{|e| e["timestamp"] } 
# >> {"id"=>2, "timestamp"=>1383314386, "data"=>"64ed2ed9-763d-443f-a74e-e7f10cbe783e"}