Module: ActiveObject::Array

Defined in:
lib/active_object/array.rb

Instance Method Summary collapse

Instance Method Details

#after(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 6

def after(value)
  return unless include?(value)

  self[(index(value).to_i + 1) % length]
end

#before(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 12

def before(value)
  return unless include?(value)

  self[(index(value).to_i - 1) % length]
end

#delete_first ⇒ Object 



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# File 'lib/active_object/array.rb', line 18

def delete_first
  self[1..-1]
end

#delete_first! ⇒ Object 



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# File 'lib/active_object/array.rb', line 22

def delete_first!
  replace(delete_first)
end

#delete_last ⇒ Object 



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# File 'lib/active_object/array.rb', line 26

def delete_last
  self[0...-1]
end

#delete_last! ⇒ Object 



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# File 'lib/active_object/array.rb', line 30

def delete_last!
  replace(delete_last)
end

#delete_values(*args) ⇒ Object 



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# File 'lib/active_object/array.rb', line 34

def delete_values(*args)
  args.each_with_object([]) { |val, results| results << delete(val) }
end

#demote(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 38

def demote(value)
  sort_by { |val| val == value ? 0 : -1 }
end

#demote!(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 42

def demote!(value)
  replace(demote(value))
end

#denillify(value = 0) ⇒ Object 



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# File 'lib/active_object/array.rb', line 46

def denillify(value = 0)
  map { |val| val.nil? ? value : val }
end

#denillify!(value = 0) ⇒ Object 



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# File 'lib/active_object/array.rb', line 50

def denillify!(value = 0)
  replace(denillify(value))
end

#dig(key, *rest) ⇒ Object 



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# File 'lib/active_object/array.rb', line 54

def dig(key, *rest)
  value = (self[key] rescue nil)

  return if value.nil?
  return value if rest.empty?
  return value.dig(*rest) if value.respond_to?(:dig)
end

#duplicates(minimum = 2) ⇒ Object 



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# File 'lib/active_object/array.rb', line 62

def duplicates(minimum = 2)
  hash = ::Hash.new(0)
  each { |val| hash[val] += 1 }
  hash.delete_if { |_, val| val < minimum }.keys
end

#from(position) ⇒ Object 



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# File 'lib/active_object/array.rb', line 68

def from(position)
  self[position, length] || []
end

#fulfill(value, amount) ⇒ Object 



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# File 'lib/active_object/array.rb', line 72

def fulfill(value, amount)
  return self if amount <= length

  fill(value, length..(amount - 1))
end

#groups(number) ⇒ Object 



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# File 'lib/active_object/array.rb', line 78

def groups(number)
  return [] if number <= 0

  num, rem = length.divmod(number)
  collection = (0..(num - 1)).collect { |val| self[(val * number), number] }
  rem.positive? ? collection << self[-rem, rem] : collection
end

#in_groups(number, fill_with = nil) ⇒ Object

rubocop:disable Metrics/MethodLength, Metrics/CyclomaticComplexity, Metrics/AbcSize



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# File 'lib/active_object/array.rb', line 87

def in_groups(number, fill_with = nil)
  collection_length = length
  division = collection_length.div(number)
  modulo = collection_length % number

  collection = []
  start = 0
  number.times do |int|
    mod_gt_zero = modulo.positive?
    grouping = division + (mod_gt_zero && modulo > int ? 1 : 0)
    collection << last_group = slice(start, grouping)
    last_group << fill_with if fill_with != false && mod_gt_zero && grouping == division
    start += grouping
  end

  block_given? ? collection.each { |val| yield(val) } : collection
end

#in_groups_of(number, fill_with = nil) ⇒ Object

rubocop:disable Metrics/MethodLength, Metrics/AbcSize



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# File 'lib/active_object/array.rb', line 107

def in_groups_of(number, fill_with = nil)
  if number.to_i <= 0
    raise ArgumentError,
          "Group length must be a positive integer, was #{number.inspect}"
  end

  if fill_with == false
    collection = self
  else
    padding = (number - length % number) % number
    collection = dup.concat(::Array.new(padding, fill_with))
  end

  sliced_collection = collection.each_slice(number)
  block_given? ? sliced_collection { |val| yield(val) } : sliced_collection.to_a
end

#indexes(value) ⇒ Object

rubocop:enable Metrics/MethodLength, Metrics/AbcSize



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# File 'lib/active_object/array.rb', line 125

def indexes(value)
  results = []
  each_with_index { |val, i| results << i if value == val }
  results
end

#merge(*values) ⇒ Object 



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# File 'lib/active_object/array.rb', line 131

def merge(*values)
  values.each { |val| concat(val) }
  self
end

#nillify ⇒ Object 



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# File 'lib/active_object/array.rb', line 136

def nillify
  map { |val| !val.nil? && (val.try(:blank?) || val.try(:to_s).blank?) ? nil : val }
end

#nillify! ⇒ Object 



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# File 'lib/active_object/array.rb', line 140

def nillify!
  replace(nillify)
end

#position(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 144

def position(value)
  idx = index(value)
  return if idx.nil?

  idx + 1
end

#positions(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 151

def positions(value)
  indexes(value).map { |val| val + 1 }
end

#probability ⇒ Object 



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# File 'lib/active_object/array.rb', line 155

def probability
  hash = ::Hash.new(0.0)
  differ = 0.0

  each do |val|
    hash[val] += 1.0
    differ += 1.0
  end

  hash.each_key { |val| hash[val] /= differ }
  hash
end

#promote(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 168

def promote(value)
  sort_by { |val| val == value ? -1 : 0 }
end

#promote!(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 172

def promote!(value)
  replace(promote(value))
end

#reject_values(*args) ⇒ Object 



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# File 'lib/active_object/array.rb', line 176

def reject_values(*args)
  reject { |val| args.include?(val) }
end

#rposition(value) ⇒ Object 



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# File 'lib/active_object/array.rb', line 180

def rposition(value)
  idx = rindex(value)
  return if idx.nil?

  idx + 1
end

#sample! ⇒ Object 



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# File 'lib/active_object/array.rb', line 187

def sample!
  delete_at(::Random.rand(length - 1))
end

#split(number = nil) ⇒ Object

rubocop:disable Metrics/MethodLength, Metrics/AbcSize



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# File 'lib/active_object/array.rb', line 192

def split(number = nil)
  if block_given?
    each_with_object([[]]) do |element, results|
      yield(element) ? (results << []) : (results.last << element)
    end
  else
    results = [[]]
    arr = dup

    until arr.empty?
      if (idx = arr.index(number))
        results.last.concat(arr.shift(idx))
        arr.shift
        results << []
      else
        results.last.concat(arr.shift(arr.length))
      end
    end

    results
  end
end

#strip ⇒ Object

rubocop:enable Metrics/MethodLength, Metrics/AbcSize



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# File 'lib/active_object/array.rb', line 216

def strip
  reject(&:blank?)
end

#strip! ⇒ Object 



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# File 'lib/active_object/array.rb', line 220

def strip!
  replace(strip)
end

#to(position) ⇒ Object 



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# File 'lib/active_object/array.rb', line 224

def to(position)
  position >= 0 ? first(position + 1) : self[0..position]
end

#to_sentence(options = {}) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/active_object/array.rb', line 229

def to_sentence(options = {})
  options = {
    words_connector: ', ',
    two_words_connector: ' and ',
    last_word_connector: ', and '
  }.merge!(options)

  case length
  when 0
    ''
  when 1
    self[0].to_s.dup
  when 2
    "#{self[0]}#{options[:two_words_connector]}#{self[1]}"
  else
    "#{self[0...-1].join(options[:words_connector])}#{options[:last_word_connector]}#{self[-1]}"
  end
end