View source for Powers Of 2 Range Assignment

=Reference=
==Ruby==
: [https://apidock.com/ruby/Proc/yield yield]
: [https://apidock.com/ruby/Kernel/block_given%3F block_given?]
: [https://www.rubydoc.info/stdlib/core/Object:to_enum to_enum]

=Code to Implement=
==PowersOfTwoRange==
{{RubyToImplement|powers_of_two_range|powers_of_two_range|PowersOfTwoRange|Object|initialize(maximum, inclusive: false)<br/>each<br/>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====

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

outputs

 <nowiki>1
2
4
8
16
32<nowiki>

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

otherwise, return an enum via to_enum.

==Unit Test==
{{RubyUnitTest|powers_of_two_range|powers_of_two_range}}