Class: ReduceDrill

Inherits:
Drill
  • Object
show all
Defined in:
lib/ruby_drills/array/reduce_drill.rb

Constant Summary

Constants included from Commands

Commands::GAMBLER

Instance Attribute Summary

Attributes inherited from Drill

#hints, #next, #previous

Instance Method Summary collapse

Methods inherited from Drill

#done?, #drills, #expected, #initialize

Methods included from Commands

#back, #clear, #continue, #fail, #fold, #help, #hint, #quit, #review, #skip, #welcome, #win

Constructor Details

This class inherits a constructor from Drill

Instance Method Details

#reference ⇒ Object 



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# File 'lib/ruby_drills/array/reduce_drill.rb', line 16

def reference
  "@values.reduce(:+)/@values.size"
end

#setup ⇒ Object 



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# File 'lib/ruby_drills/array/reduce_drill.rb', line 3

def setup
  @values = [ 1, 2, 3 ]
  @hints = ["Use a method from the Enumerable module", "How could you use reduce to solve this problem?"]
end

#show ⇒ Object 



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# File 'lib/ruby_drills/array/reduce_drill.rb', line 8

def show
  puts %{
@values = #{@values.inspect}

Calculate the mean of this array.
}
end

#valid?(input) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/ruby_drills/array/reduce_drill.rb', line 20

def valid?(input)
  input.include?("reduce")
end