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Contents
module Finitio
module RelBasedType
def representator
[tuple_type.representator]
end
def include?(value)
value.is_a?(Set) && value.all?{|tuple|
tuple_type.include?(tuple)
}
end
# Apply the corresponding TupleType's `dress` to every element of `value`
# (any enumerable). Return a Set of transformed tuples. Fail if anything
# goes wrong transforming tuples or if duplicates are found.
def dress(value, handler = DressHelper.new)
handler.failed!(self, value) unless value.respond_to?(:each)
# Up every tuple and keep results in a Set
set = Set.new
handler.iterate(value) do |tuple, index|
tuple = tuple_type.dress(tuple, handler)
handler.fail!("Duplicate tuple") if set.include?(tuple)
set << tuple
end
# Return built tuples
set
end
private
def tuple_type
@tuple_type ||= begin
clazz = heading.multi? ? MultiTupleType : TupleType
clazz.new(heading)
end
end
end # module RelBasedType
end # module Finitio
Version data entries
19 entries across 19 versions & 1 rubygems