ruby : Generate a Hash of Hashes from an Array of Hashes

Question

我有以下内容

friends = [{ name: "Jack", attr1:"def", attr2:"def" }, { name: "Jill", attr1:"def", attr2:"def" }]

我想把上面的表示转换成这样的哈希的哈希

friends = { "Jack" => { attr1: "def", attr2:"def" }, "Jill" => { attr1: "def", attr2: "def" } }

在 Ruby 中有什么优雅的方法可以做到这一点？

Answer 1

Hash[friends.map { |f| _f = f.dup; [_f.delete(:name), _f] }]
# => {"Jack"=>{:attr1=>"def", :attr2=>"def"}, "Jill"=>{:attr1=>"def", :attr2=>"def"}}