将 hash 添加到 ruby 中的哈希

Question

final_sub_hash = {}

<% workers.each do |work| %>
  <% sub_hash = {} %>
  <% sub_hash = {:name => work['name'], :gender => work['gender']} %>        
  <% final_sub_hash.update(sub_hash) %>
<% end %>

What I am trying to do is append the values of sub_hash to final_sub_hash but I am not able to figure out how can I do that. Please help me find a solution.

Answer 1

hash.store(key, value) stores a key-value pair in hash .

Example:

hash   #=> {"a"=>1, "b"=>2, "c"=>55}
hash["d"] =  30 #=> 30
hash   #=> {"a"=>1, "b"=>2, "c"=>55, "d"=>30}

What you are trying to do is a list.

Example:

works = []
work.append(hash) #=> [ {"a"=>1, "b"=>2, "c"=>55, "d"=>30} ]

Answer 2

I arrived here from a search for how to add a hash to a hash. In case anyone else wonders the same, here's a nice example

# Create a hash
h = {a: 1, b: 2}
# => {:a=>1, :b=>2}

# Add a hash to the existing hash
h.store(:c, {i: 10, ii: 20})
# > {:a=>1, :b=>2, :c=>{:i=>10, :ii=>20}}

The new key can be a symbol (like :c , as above), but it could also be a string:

h.store("c", {i: 10, ii: 20})
# => {:a=>1, :b=>2, "c"=>{:i=>10, :ii=>20}}