Powers Of 2 Range Assignment

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Reference

Ruby

yield
block_given?
to_enum

Code to Implement

PowersOfTwoRange

file: src/main/ruby/powers_of_two_range/powers_of_two_range.rb Ruby logo.svg
class: PowersOfTwoRange
superclass: Object
methods: initialize(maximum, inclusive: false)
each
each_with_index

initialize(maximum, inclusive: false)

hang onto enough information in instance variables to support each and each_with_index

each

if a block is given, repeatedly yield with appropriate value.

otherwise, return an enum via to_enum.

exclusive client with block given

exclusive_powers_of_two = PowersOfTwoRange.new(64)
exclusive_powers_of_two.each do |n|
  puts n
end

outputs

1
2
4
8
16
32

inclusive client with block given

exclusive_powers_of_two = PowersOfTwoRange.new(64, inclusive: true)
exclusive_powers_of_two.each do |n|
  puts n
end

outputs

1
2
4
8
16
32
64

exclusive client without block

exclusive_powers_of_two = PowersOfTwoRange.new(64)
as_enum = exclusive_powers_of_two.each
p as_enum.to_a

outputs

[1, 2, 4, 8, 16, 32]

each_with_index

if a block is given, repeatedly yield with appropriate value and its index.

otherwise, return an enum via to_enum.

exclusive client with block given

exclusive_powers_of_two = PowersOfTwoRange.new(64)
exclusive_powers_of_two.each_with_index do |n, index|
  puts "#{n}, #{index}"
end

outputs

1, 0
2, 1
4, 2
8, 3
16, 4
32, 5

Client

file to run: src/main/ruby/powers_of_two_range_client/powers_of_two_range_client.rb Ruby logo.svg

Unit Test

file: src/test/ruby/powers_of_two_range/powers_of_two_range.rb Ruby logo.svg UnitTest

note: ensure that you have removed all printing to receive credit for any assignment.