Difference between revisions of "Powers Of 2 Range Assignment"

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=Reference=
 
=Reference=
−
==Ruby==
+
: [https://apidock.com/ruby/Proc/yield yield]
 
: [https://apidock.com/ruby/Kernel/block_given%3F block_given?]
 
: [https://apidock.com/ruby/Kernel/block_given%3F block_given?]
−
: [https://apidock.com/ruby/Proc/yield yield]
+
: [https://www.rubydoc.info/stdlib/core/Object:to_enum to_enum]
  
 
=Code to Implement=
 
=Code to Implement=
Line 13: Line 13:
  
 
otherwise, return an enum via to_enum.
 
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>
 +
 +
====inclusive client with block given====
 +
 +
<nowiki>exclusive_powers_of_two = PowersOfTwoRange.new(64, inclusive: true)
 +
exclusive_powers_of_two.each do |n|
 +
  puts n
 +
end</nowiki>
 +
 +
outputs
 +
 +
<nowiki>1
 +
2
 +
4
 +
8
 +
16
 +
32
 +
64</nowiki>
 +
 +
====exclusive client without block====
 +
 +
<nowiki>exclusive_powers_of_two = PowersOfTwoRange.new(64)
 +
as_enum = exclusive_powers_of_two.each
 +
p as_enum.to_a</nowiki>
 +
 +
outputs
 +
 +
<nowiki>[1, 2, 4, 8, 16, 32]
 +
</nowiki>
  
 
===each_with_index===
 
===each_with_index===
Line 18: Line 61:
  
 
otherwise, return an enum via to_enum.
 
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_with_index do |n, index|
 +
  puts "#{n}, #{index}"
 +
end</nowiki>
 +
 +
outputs
 +
 +
<nowiki>1, 0
 +
2, 1
 +
4, 2
 +
8, 3
 +
16, 4
 +
32, 5</nowiki>
 +
 +
=Client=
 +
{{RubyToRun|powers_of_two_range_client|powers_of_two_range_client|main}}
  
−
==Unit Test==
+
=Unit Test=
 
{{RubyUnitTest|powers_of_two_range|powers_of_two_range}}
 
{{RubyUnitTest|powers_of_two_range|powers_of_two_range}}

Latest revision as of 01:12, 9 March 2023

Reference

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.

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