Difference between revisions of "Powers Of 2 Range Enumerable Mixin Assignment"

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In this studio we will evolve our code from our [[Powers_Of_2_Range_Enumerable_Mixin_Assignment|Powers of 2]] exercise to leverage class mixins.
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In this studio we will evolve our code from our [[Powers_Of_2_Range_Assignment|Powers of 2]] exercise to leverage class mixins.
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=Documentation To Invesigate=
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: [https://ruby-doc.org/core-3.1.1/Enumerable.html Enumerable]
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=Implementation To Investigate (If Interested)=
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: [https://github.com/ruby/ruby/blob/master/enum.c enum.c]
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=Code To Modify=
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Add
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include Enumerable
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to your PowersOfTwoRange class definition.
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=Client=
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{{RubyToRun|powers_of_two_range_enumerable_mixin_client|powers_of_two_range_enumerable_mixin_client|main}}
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==map example==
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<nowiki>texts = exclusive_powers_of_two.map do |value|
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  "*** #{value} ***"
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end
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p texts</nowiki>
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should output:
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["*** 1 ***", "*** 2 ***", "*** 4 ***", "*** 8 ***", "*** 16 ***", "*** 32 ***", "*** 64 ***", "*** 128 ***", "*** 256 ***"]
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==select example==
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<nowiki>perfect_squares = exclusive_powers_of_two.select do |value|
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  square_root = Math.sqrt(value)
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  square_root == square_root.to_i
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end
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p perfect_squares</nowiki>
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should output
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[1, 4, 16, 64, 256]
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=Unit Test=
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{{RubyUnitTest|powers_of_two_range_enumerable_mixin|powers_of_two_range_enumerable_mixin}}

Latest revision as of 17:15, 11 April 2022

In this studio we will evolve our code from our Powers of 2 exercise to leverage class mixins.

Documentation To Invesigate

Enumerable

Implementation To Investigate (If Interested)

enum.c

Code To Modify

Add 

include Enumerable

to your PowersOfTwoRange class definition.

Client

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

map example

texts = exclusive_powers_of_two.map do |value|
  "*** #{value} ***"
end
p texts

should output: 

["*** 1 ***", "*** 2 ***", "*** 4 ***", "*** 8 ***", "*** 16 ***", "*** 32 ***", "*** 64 ***", "*** 128 ***", "*** 256 ***"]

select example

perfect_squares = exclusive_powers_of_two.select do |value|
  square_root = Math.sqrt(value)
  square_root == square_root.to_i
end
p perfect_squares

should output 

[1, 4, 16, 64, 256]

Unit Test

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

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

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