This mixin provides methods of equality based on a single # method which must return a list of accessors used as the identity keys.
It also provides a “shortcut” for creating the # method based on given accessors and returns the Equitable module for inclusion.
include Equitable(:a, :b)
is equivalent to including a module containing:
def ==(other) self.a == other.a && self.b == other.b end def eql?(other) self.a.eql?(other.a) && self.b.eql?(other.b) end def hash() self.a.hash ^ self.b.hash end
# File lib/more/facets/equitable.rb, line 78 78: def ==(o) 79: identity.all?{ |a| send(a) == o.send(a) } 80: end
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