Class: ComboData::DataSet

Inherits:
Object
  • Object
show all
Defined in:
lib/combo_data/data_set.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data = []) ⇒ DataSet

Returns a new instance of DataSet.



8
9
10
11
12
13
14
 
# File 'lib/combo_data/data_set.rb', line 8

def initialize(data = [])
  @data = data
  @max_combination_length = 2
  @precision = 2
  @timeout = 60
  @search_value = nil
end

Instance Attribute Details

#data ⇒ Object

Returns the value of attribute data.



6
7
8
 
# File 'lib/combo_data/data_set.rb', line 6

def data
  @data
end

#max_combination_length ⇒ Object

Returns the value of attribute max_combination_length.



6
7
8
 
# File 'lib/combo_data/data_set.rb', line 6

def max_combination_length
  @max_combination_length
end

#precision ⇒ Object

Returns the value of attribute precision.



6
7
8
 
# File 'lib/combo_data/data_set.rb', line 6

def precision
  @precision
end

#timeout ⇒ Object

Returns the value of attribute timeout.



6
7
8
 
# File 'lib/combo_data/data_set.rb', line 6

def timeout
  @timeout
end

Instance Method Details

#combinations_summing_to(value) ⇒ Object 



16
17
18
19
 
# File 'lib/combo_data/data_set.rb', line 16

def combinations_summing_to(value)
  @search_value = value
  sum_hash(@data.reject{ |v| v > @search_value}).select{ |addends, sum| sum.round(@precision) == @search_value.round(@precision) }
end

#pairs_with_a_difference_of(value) ⇒ Object 



21
22
23
24
25
26
 
# File 'lib/combo_data/data_set.rb', line 21

def pairs_with_a_difference_of(value)
  @search_value = value
  Timeout.timeout(@timeout) do
    difference_hash(@data).select{ |minuends, difference| difference.round(@precision) == @search_value.round(@precision) }
  end
end