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# File 'lib/summarily/class_methods.rb', line 4
def summarily
strategy = MergeStrategy.new
yield strategy
attr_writer :num_samples
define_method :num_samples do
@num_samples ||= 1
end
define_method :merge do |other|
merged = {}
strategy.merge_operations.each do |attr, operation|
merged[attr] = operation.call(
self.send(attr),
other.send(attr)
)
end
merged_instance = self.class.new(merged)
merged_instance.num_samples = self.num_samples + other.num_samples
merged_instance
end
end
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