Difference between revisions of "Powers Of 2 Range Assignment"
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exclusive_powers_of_two.each do |n| | exclusive_powers_of_two.each do |n| | ||
puts n | puts n | ||
− | end<nowiki> | + | end</nowiki> |
outputs | outputs | ||
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8 | 8 | ||
16 | 16 | ||
− | 32<nowiki> | + | 32</nowiki> |
===each_with_index=== | ===each_with_index=== |
Revision as of 16:02, 11 April 2022
Contents
Reference
Ruby
Code to Implement
PowersOfTwoRange
file: | src/main/ruby/powers_of_two_range/powers_of_two_range.rb | |
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
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
file: | src/test/ruby/powers_of_two_range/powers_of_two_range.rb | UnitTest |
note: ensure that you have removed all printing to receive credit for any assignment.