class Comparison::Comparator
The Comparator
object compares two numbers to each other and exposes the raw and percentage differences.
Attributes
m[R]
rubocop:enable Naming/UncommunicativeMethodParamName
n[R]
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Public Class Methods
new(m, n)
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Instantiates a new Comparator
to compare two numbers, m
and n
.
Both numbers will be converted to instances of `BigDecimal`.
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# File lib/comparison/comparator.rb, line 19 def initialize(m, n) @m = m.to_d @n = n.to_d end
Public Instance Methods
absolute()
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Returns the difference between +@m+ and +@n+.
# File lib/comparison/comparator.rb, line 31 def absolute @absolute ||= m - n end
Also aliased as: difference
relative()
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Returns the percentage difference of +@m+ to +@n+.
# File lib/comparison/comparator.rb, line 39 def relative @relative ||= if n.negative? (1 - m / n) * 100 else (m / n - 1) * 100 end end
Also aliased as: percentage