Module: Brian::Lookup

Defined in:
lib/brian/lookup.rb

Class Method Summary collapse

Class Method Details

.build_lookup(hashes) ⇒ Object 



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# File 'lib/brian/lookup.rb', line 3

def self.build_lookup(hashes)
	hash = hashes.reduce do |memo, hash|
		memo.merge(hash)
	end

	return Brian::Lookup.lookup_from_hash(hash)
end

.lookup_from_hash(hash) ⇒ Object 



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# File 'lib/brian/lookup.rb', line 11

def self.lookup_from_hash(hash)
	lookup = {}
	index = 0

	hash.keys.each do |k|
		lookup[k] = index
		index += 1
	end

	return lookup
end

.to_array(lookup, hash) ⇒ Object 



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# File 'lib/brian/lookup.rb', line 23

def self.to_array(lookup, hash)
	array = []

	lookup.each_pair do |k,v|
		array[v] = hash.has_key?(k) ? hash[k] : 0
	end

	return array
end

.to_hash(lookup, array) ⇒ Object 



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# File 'lib/brian/lookup.rb', line 33

def self.to_hash(lookup, array)
	hash = {}

	lookup.each_pair do |k,v|
		hash[k] = array[v]
	end

	return hash
end