Module: Nuggets::Integer::MapMixin

Included in:: Integer

Defined in:: lib/nuggets/integer/map_mixin.rb

Instance Method Summary collapse

#map_positive ⇒ Object

call-seq: int.map_positive => anInteger.

Instance Method Details

#map_positive ⇒ `Object`

call-seq:

int.map_positive => anInteger

Creates a bijection from Z to N, i.e., it maps int to a positive integer.



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# File 'lib/nuggets/integer/map_mixin.rb', line 36

def map_positive
  2 * abs + (self > 0 ? 0 : 1)
end