Class: Array

Inherits:
Object show all
Defined in:
lib/lite/ruby/array.rb

Instance Method Summary collapse

Instance Method Details

#after(value) ⇒ Object 



36
37
38
39
40
 
# File 'lib/lite/ruby/array.rb', line 36

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

  self[(index(value) + 1) % size]
end

#assert_all_valid_values!(*valid_values) ⇒ Object

Raises:

  • (ArgumentError) 


16
17
18
19
20
 
# File 'lib/lite/ruby/array.rb', line 16

def assert_all_valid_values!(*valid_values)
  return assert_valid_values!(*valid_values) unless empty?

  raise ArgumentError, 'An empty array is not allowed'
end

#assert_all_value_presence! ⇒ Object

Raises:

  • (ArgumentError) 


30
31
32
33
34
 
# File 'lib/lite/ruby/array.rb', line 30

def assert_all_value_presence!
  return assert_value_presence! unless empty?

  raise ArgumentError, 'An empty array is not allowed'
end

#assert_valid_values!(*valid_values) ⇒ Object 



6
7
8
9
10
11
12
13
14
 
# File 'lib/lite/ruby/array.rb', line 6

def assert_valid_values!(*valid_values)
  each do |value|
    next if valid_values.include?(value)

    raise ArgumentError,
          "Invalid value: #{value.inspect}." \
          "Allowed values are: #{valid_values.map(&:inspect).join(', ')}"
  end
end

#assert_value_presence! ⇒ Object 



22
23
24
25
26
27
28
 
# File 'lib/lite/ruby/array.rb', line 22

def assert_value_presence!
  each do |value|
    next if value.respond_to?(:present?) ? value.present? : value

    raise ArgumentError, "A #{value.inspect} value is not allowed"
  end
end

#before(value) ⇒ Object 



42
43
44
45
46
 
# File 'lib/lite/ruby/array.rb', line 42

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

  self[(index(value) - 1) % size]
end

#bury(*args) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/BlockNesting, Metrics/MethodLength rubocop:disable Metrics/PerceivedComplexity, Style/GuardClause, Style/IfInsideElse



50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
 
# File 'lib/lite/ruby/array.rb', line 50

def bury(*args)
  if args.count < 2
    raise ArgumentError, '2 or more arguments required'
  elsif args.count == 2
    if args[0].is_a?(Integer)
      self[args[0]] = args[1]
    else
      self << { args[0] => args[1] }
    end
  else
    if args[0].is_a?(Integer)
      arg = args.shift
      self[arg] = [] unless self[arg]
      self[arg].bury(*args)
    else
      self << {}.bury(*args)
    end
  end

  self
end

#deep_dup ⇒ Object

rubocop:enable Metrics/PerceivedComplexity, Style/GuardClause, Style/IfInsideElse rubocop:enable Metrics/AbcSize, Metrics/BlockNesting, Metrics/MethodLength



74
75
76
 
# File 'lib/lite/ruby/array.rb', line 74

def deep_dup
  map(&:deep_dup)
end

#delete_first ⇒ Object 



78
79
80
 
# File 'lib/lite/ruby/array.rb', line 78

def delete_first
  self[1..-1]
end

#delete_first! ⇒ Object 



82
83
84
 
# File 'lib/lite/ruby/array.rb', line 82

def delete_first!
  replace(delete_first)
end

#delete_last ⇒ Object 



86
87
88
 
# File 'lib/lite/ruby/array.rb', line 86

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

#delete_last! ⇒ Object 



90
91
92
 
# File 'lib/lite/ruby/array.rb', line 90

def delete_last!
  replace(delete_last)
end

#delete_values(*args) ⇒ Object 



94
95
96
 
# File 'lib/lite/ruby/array.rb', line 94

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

#demote(value) ⇒ Object 



98
99
100
 
# File 'lib/lite/ruby/array.rb', line 98

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

#demote!(value) ⇒ Object 



102
103
104
 
# File 'lib/lite/ruby/array.rb', line 102

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

#denillify(identity = 0) ⇒ Object 



106
107
108
 
# File 'lib/lite/ruby/array.rb', line 106

def denillify(identity = 0)
  map { |val| val || identity }
end

#denillify!(identity = 0) ⇒ Object 



110
111
112
 
# File 'lib/lite/ruby/array.rb', line 110

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

#duplicates(minimum = 2) ⇒ Object 



114
115
116
117
118
 
# File 'lib/lite/ruby/array.rb', line 114

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

#from(position) ⇒ Object 



120
121
122
 
# File 'lib/lite/ruby/array.rb', line 120

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

#fulfill(value, amount) ⇒ Object 



124
125
126
127
128
 
# File 'lib/lite/ruby/array.rb', line 124

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

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

#groups(number) ⇒ Object 



130
131
132
133
134
135
136
137
138
 
# File 'lib/lite/ruby/array.rb', line 130

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

  num, rem = size.divmod(number)
  collection = (0..(num - 1)).collect { |val| self[(val * number), number] }
  return collection unless rem.positive?

  collection << self[-rem, rem]
end

#in_groups(number, fill_with = nil) ⇒ Object

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



141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
 
# File 'lib/lite/ruby/array.rb', line 141

def in_groups(number, fill_with = nil)
  collection_size = size
  division = collection_size.div(number)
  modulo = collection_size % 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

  return collection unless block_given?

  collection.each { |val| yield(val) }
end

#in_groups_of(number, fill_with = nil) ⇒ Object

rubocop:disable Metrics/AbcSize, Metrics/MethodLength, Style/GuardClause



163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
 
# File 'lib/lite/ruby/array.rb', line 163

def in_groups_of(number, fill_with = nil)
  if number.to_i <= 0
    raise ArgumentError, "Group size must be a positive integer, was #{number.inspect}"
  elsif fill_with == false
    collection = self
  else
    padding = (number - size % number) % number
    collection = dup.concat(Array.new(padding, fill_with))
  end

  sliced_collection = collection.each_slice(number)
  return sliced_collection.to_a unless block_given?

  sliced_collection { |val| yield(val) }
end

#indexes(value) ⇒ Object Also known as: indices

rubocop:enable Metrics/AbcSize, Metrics/MethodLength, Style/GuardClause



180
181
182
183
184
 
# File 'lib/lite/ruby/array.rb', line 180

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

#merge(*values) ⇒ Object 



188
189
190
 
# File 'lib/lite/ruby/array.rb', line 188

def merge(*values)
  dup.merge!(*values)
end

#merge!(*values) ⇒ Object 



192
193
194
 
# File 'lib/lite/ruby/array.rb', line 192

def merge!(*values)
  values.each_with_object(self) { |val, arr| arr.concat(val) }
end

#nillify ⇒ Object 



196
197
198
 
# File 'lib/lite/ruby/array.rb', line 196

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

#nillify! ⇒ Object 



200
201
202
 
# File 'lib/lite/ruby/array.rb', line 200

def nillify!
  replace(nillify)
end

#position(value) ⇒ Object 



204
205
206
207
208
209
 
# File 'lib/lite/ruby/array.rb', line 204

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

  idx + 1
end

#positions(value) ⇒ Object 



211
212
213
 
# File 'lib/lite/ruby/array.rb', line 211

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

#probability ⇒ Object 



215
216
217
218
219
220
221
222
223
224
225
226
 
# File 'lib/lite/ruby/array.rb', line 215

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 



228
229
230
 
# File 'lib/lite/ruby/array.rb', line 228

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

#promote!(value) ⇒ Object 



232
233
234
 
# File 'lib/lite/ruby/array.rb', line 232

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

#reject_values(*args) ⇒ Object 



236
237
238
 
# File 'lib/lite/ruby/array.rb', line 236

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

#rposition(value) ⇒ Object 



240
241
242
243
244
245
 
# File 'lib/lite/ruby/array.rb', line 240

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

  idx + 1
end

#sample! ⇒ Object 



247
248
249
 
# File 'lib/lite/ruby/array.rb', line 247

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

#split(number = nil) ⇒ Object

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



252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
 
# File 'lib/lite/ruby/array.rb', line 252

def split(number = nil)
  array = [[]]

  if block_given?
    each { |val| yield(val) ? (array << []) : (array .last << val) }
  else
    dup_arr = dup

    until dup_arr.empty?
      if (idx = dup_arr.index(number))
        array.last << dup_arr.shift(idx)
        dup_arr.shift
        array << []
      else
        array.last << arr.shift(dup_arr.size)
      end
    end
  end

  array
end

#strip ⇒ Object

rubocop:enable Metrics/AbcSize, Metrics/BlockNesting, Metrics/MethodLength



275
276
277
 
# File 'lib/lite/ruby/array.rb', line 275

def strip
  reject(&:blank?)
end

#strip! ⇒ Object 



279
280
281
 
# File 'lib/lite/ruby/array.rb', line 279

def strip!
  replace(strip)
end

#swap(from, to) ⇒ Object 



283
284
285
286
 
# File 'lib/lite/ruby/array.rb', line 283

def swap(from, to)
  self[from], self[to] = self[to], self[from]
  self
end

#to(position) ⇒ Object 



288
289
290
291
292
 
# File 'lib/lite/ruby/array.rb', line 288

def to(position)
  return first(position + 1) if position >= 0

  self[0..position]
end

#to_sentence(options = {}) ⇒ Object

rubocop:disable Metrics/CyclomaticComplexity



295
296
297
298
299
300
301
302
303
304
305
306
 
# File 'lib/lite/ruby/array.rb', line 295

def to_sentence(options = {})
  words_connector = options[:words_connector] || ', '
  two_words_connector = options[:two_words_connector] || ' and '
  last_word_connector = options[:last_word_connector] || ', and '

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