Separate subhash from hash [closed] - ruby

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I have the following hash_of_student_and_grades.
{132=>{"Design"=>6, "English"=>5, "Humanities"=>5, "Languages"=>6, "Math"=>6, "Music"=>7,
"PE"=>6, "Science"=>6, "Theatre"=>6},
134=>{"Design"=>7, "English"=>6, "Humanities"=>6, "Languages"=>6, "Math"=>5, "Music"=>6,
"PE"=>6, "Science"=>7, "Art"=>6},
136=>{"Design"=>5, "English"=>4, "Humanities"=>5, "Languages"=>6, "Math"=>6, "Music"=>6,
"PE"=>7, "Science"=>5, "Theatre"=>6},...}
Now I want to make hash with key like this.
id132={"Design"=>6, "English"=>5, "Humanities"=>5, "Languages"=>6, "Math"=>6, "Music"=>7,
"PE"=>6, "Science"=>6, "Theatre"=>6}
id134={"Design"=>7, "English"=>6, "Humanities"=>6, "Languages"=>6, "Math"=>5, "Music"=>6,
"PE"=>6, "Science"=>7, "Art"=>6}
...
...
UPDATE:
I have done this so far. But it does not assign each hash to key.
resulthash.each {|key, value| puts key=value}
# outputs
{"Design"=>6, "English"=>5, "Humanities"=>5, "Languages"=>6, "Math"=>6, "Music"=>7, "PE"=>6, "Science"=>6, "Theatre"=>6}
{"Design"=>7, "English"=>6, "Humanities"=>6, "Languages"=>6, "Math"=>5, "Music"=>6, "PE"=>6, "Science"=>7, "Theatre"=>6}
How can I accomplish this?

Answer 1

You can't use digits as variable names, but if it would be id132, id133 etc you can accomplish this using metaprogramming and instance variables:
hash = {"i1"=>{"a"=>"b"}, "i2"=>{"c"=>"d"}}
hash.each { |key, value| instance_variable_set("##{ key }", value) }
puts #i1 # => {"a"=>"b"}

Answer 2

Because you can(ruby gives you ability to shoot your foot),here is answer:
In ruby id32 is the name of variable.
Hash's key can be any type: number, string... object.
Basic types(number, string, nil, false, true) are evaluated like this:
n1 = 2
n2 = 2
h = {2 => 42}
h[n1] # 42
h[n2] # 42
In other words you get/set hash's key 2 not n1 or n2. It would be hard to change basic types.
Objects, on other hands, you can modify:
class N
def initialize name
#name=name #contains name, like `id32`, `id34`
end
def to_s #this method let you show any text, here name(for example `id32`)
"#{#name}"
end
end
id32 = N.new 'id32'
h={id32 => 42}
#{id32=>42}
#adding more keys/values
id34 = N.new 'id34'
h[id34] = 'some value'
and... that's just basics.
what lots of rubist do:
They use symbols.
What are symbols?
It's type like string but there can be only one symbol!
puts :a.object_id
puts :a.object_id
puts :a.object_id
Code above prints 3 the same numbers because :a is only 1.
puts 'a'.object_id
puts 'a'.object_id
Strings are not the same.
Construction:
You prepend characters with ::
`:a`
or if it has weird character, prepend with : and surround with ' or ":
:'a'
To sum up:
Your code will look exactly the same, will be faster(no need for objects like above):
h ={:a => :b}
or from 1.9.x(i don't remember correct number) you can use this syntax too:
h = {a: :b}