紅寶石混合數組嵌套散列

Question

我有一個Ruby數組，其元素在字符串和散列之間交替。例如 -

["1234", Hash#1, "5678", Hash#2] 

我想從中創建一個嵌套的散列結構。所以，

hash["1234"]["key in hash#1"] = value 
hash["5678"]["key in hash#2"] = value 

有沒有人有/現在這樣做的好方法？謝謝。

Answer 1

只需使用

hsh = Hash[*arr] #suppose arr is the array you have 

它將在一個時間段2和轉化成散列。

Answer 2

我不認爲有一個方法直接做到這一點。下面的代碼工作，很容易閱讀。

hsh = {} 

ary.each_slice(2) do |a, b| 
    hsh[a] = b 
end 

# Now `hsh` is as you want it to be 

Answer 3

在你想要的猜測，因爲「散列＃1鍵」是不明確的，也不要爲有你定義了什麼hash或value應該是：

value = 42 

h1 = {a:1} 
h2 = {b:2} 
a = ["1234",h1,"5678",h2] 
a.each_slice(2).each{ |str,h| h[str] = value } 
p h1, #=> {:a=>1, "1234"=>42} 
    h2 #=> {:b=>2, "5678"=>42} 

或者，也許你的意思是這樣的：

h1 = {a:1} 
h2 = {b:2} 
a = ["1234",h1,"5678",h2] 

hash = Hash[ a.each_slice(2).to_a ] 
p hash    #=> {"1234"=>{:a=>1}, "5678"=>{:b=>2}} 
p hash["1234"][:a] #=> 1 

Answer 4

讓我們猜測，使用方面只是爲了好玩：

require 'facets' 
xs = ["1234", {:a => 1, :b => 2}, "5678", {:c => 3}] 
xs.each_slice(2).mash.to_h 
#=> {"1234"=>{:a=>1, :b=>2}, "5678"=>{:c=>3}}