Class: DropWhileDrill

Inherits:
Drill
  • Object
show all
Defined in:
lib/ruby_drills/array/drop_while_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, #non!

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 



19
20
21
 
# File 'lib/ruby_drills/array/drop_while_drill.rb', line 19

def reference
  "@b.drop_while {|x| x < 4}"
end

#setup ⇒ Object 



3
4
5
6
 
# File 'lib/ruby_drills/array/drop_while_drill.rb', line 3

def setup
  @b = [1, 2, 3, 4, 5, 0]
  @hints = ["http://ruby-doc.org/core-1.9.3/Enumerable.html#method-i-drop_while"]
end

#show ⇒ Object 



8
9
10
11
12
13
14
15
16
17
 
# File 'lib/ruby_drills/array/drop_while_drill.rb', line 8

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

Use the Enumerable method that removes elements up to, but not including,
the first element for which the block returns nil or false and returns an array
containing the remaining elements, resulting in:
#{expected}
}
end

#valid?(input) ⇒ Boolean

Returns:

  • (Boolean) 


23
24
25
 
# File 'lib/ruby_drills/array/drop_while_drill.rb', line 23

def valid?(input)
  input.include?('drop_while')
end