October 23 2011
Ruby Tip: Sort a hash recursively
A while ago, I found a great Stackoverflow answer for sorting a hash in Ruby:
class Hash
def sorted_hash(&block)
self.class[sort(&block)]
end
endBut recently, I wanted to take it a bit further and recursively sort all the hashes in an object, even if they are inside of an array. Here is a snippet to do that:
class Hash
def sorted_hash(&block)
self.class[
self.each do |k,v|
self[k] = v.sorted_hash(&block) if v.class == Hash
self[k] = v.collect {|a| a.sorted_hash(&block)} if v.class == Array
end.sort(&block)]
end
end
