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Contents
module Daru
module ArrayHelper
module_function
# Recode repeated values on an array, adding the number of repetition
# at the end
# Example:
# a=%w{a b c c d d d e}
# a.recode_repeated
# => ["a","b","c_1","c_2","d_1","d_2","d_3","e"]
def recode_repeated(array)
return array if array.size == array.uniq.size
# create hash of { <name> => 0}
# for all names which are more than one time in array
counter = array
.group_by(&:itself)
.select { |_, g| g.size > 1 }
.map(&:first)
.collect { |n| [n, 0] }.to_h
# ...and use this hash for actual recode
array.collect do |n|
if counter.key?(n)
counter[n] += 1
new_n = '%s_%d' % [n, counter[n]]
n.is_a?(Symbol) ? new_n.to_sym : new_n
else
n
end
end
end
def array_of?(array, match)
array.is_a?(Array) &&
!array.empty? &&
array.all? { |el| match === el } # rubocop:disable Style/CaseEquality
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems