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Contents
# frozen_string_literal: true
module HoneyFormat
module Helpers
# Converts a Hash with key => count to a deduplicated array.
# @param [Hash] data with key => count
# @return [Array<Symbol>] an array of symbols
# @example
# Helpers.key_count_to_deduplicated_array({ a: 2, b: 1, c: 0})
# # => [:a, :a1, :b]
def self.key_count_to_deduplicated_array(data)
array = []
count_occurences(data).each do |key, value|
next array << key if value == 1
values = Array.new(value) { |i| i }.map do |index|
next key if index.zero?
:"#{key}#{index}"
end
array.concat(values)
end
array
end
# Returns hash with key => occurrences_count
# @param [Array<Object>] the array to count occurrences in
# @return [Hash] key => occurrences_count
def self.count_occurences(array)
occurrences = Hash.new(0)
array.each { |column| occurrences[column] += 1 }
occurrences
end
# Returns array with duplicated objects
# @param [Array<Object>] the array to find duplicates in
# @return [Array<Object>] array of duplicated objects
def self.duplicated_items(array)
array.select { |col| array.count(col) > 1 }.uniq
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems