Sha256: e71a962945bc24a01660b4e76fc350471bf75b0d5fa41d7c1e43bb5142bca673
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Size: 1.33 KB
Versions: 31
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Stored size: 1.33 KB
Contents
# additional methods for Class::Hash required for ViralSeq
class Hash
# subtract one hash (h2) from the other (h1) if the keys are identical
# @param other_hash [Hash] the hash that needs to substracted from the hash before the method
# @return [Hash] hash after substraction
# @example substract h2 from h1 if the keys match
# h1 = {"Cat" => 100, "Dog" => 5, "Bird" => 2, "Snake" => 10}
# h2 = {"Cat" => 100, "Dog" => 5, "Bison" => 30}
# h1.difference(h2)
# => {"Bird" => 2, "Snake" => 10}
def difference(other_hash)
reject do |k,_v|
other_hash.has_key? k
end
end
# return a new hash with the unique values of input hash as keys,
# and the keys of the unique values of input hash in an array as values of the new hash
# @return [Hash] a new hash of :uniq_value_of_orginial_hash => :array_of_keys
# @example
# hash = {1=>"A", 2=>"A", 3=>"C", 4=>"C", 5=>"T"}
# hash.uniq_hash
# => {"A"=>[1, 2], "C"=>[3, 4], "T"=>[5]}
def uniq_hash
uniq_values = self.values.uniq
out_hash = {}
uniq_values.each do |uniq_va|
self.each do |k,v|
if v == uniq_va
if out_hash[uniq_va]
out_hash[uniq_va] << k
else
out_hash[uniq_va] = []
out_hash[uniq_va] << k
end
end
end
end
return out_hash
end
end
Version data entries
31 entries across 31 versions & 1 rubygems