如何在散列内创建散列

Question

我如何能够在散列内创建散列，并且嵌套散列具有用于标识它的键。另外，我在嵌套哈希创建的元素，我怎么能对他们有键以及

例如

test = Hash.new() 

#create second hash with a name?? test = Hash.new("test1")?? 
test("test1")[1] = 1??? 
test("test1")[2] = 2??? 

#create second hash with a name/key test = Hash.new("test2")??? 
test("test2")[1] = 1?? 
test("test2")[2] = 2?? 

谢谢

Answer 1

my_hash = { :nested_hash => { :first_key => 'Hello' } } 

puts my_hash[:nested_hash][:first_key] 
$ Hello 

或

my_hash = {} 

my_hash.merge!(:nested_hash => {:first_key => 'Hello' }) 

puts my_hash[:nested_hash][:first_key] 
$ Hello 

Answer 2

乔尔的是我会做的，但也可以这样做：

test = Hash.new() 
test['test1'] = Hash.new() 
test['test1']['key'] = 'val' 

Answer 3

h1 = {'h2.1' => {'foo' => 'this', 'cool' => 'guy'}, 'h2.2' => {'bar' => '2000'} } 
h1['h2.1'] # => {'foo' => 'this', 'cool' => 'guy'} 
h1['h2.2'] # => {'bar' => '2000'} 
h1['h2.1']['foo'] # => 'this' 
h1['h2.1']['cool'] # => 'guy' 
h1['h2.2']['bar'] # => '2000'