Sha256: b8ab95e5a8f870f72f015de700d33e329e0109805bc1e4b2840e520cb2085379
Contents?: true
Size: 654 Bytes
Versions: 5
Compression:
Stored size: 654 Bytes
Contents
module Alf
module Algebra
class Intersect
include Operator
include Relational
include Binary
signature do |s|
end
def heading
@heading ||= left.heading + right.heading
end
def keys
@keys ||= begin
k1s, k2s = left.keys, right.keys
k2s = k2s.reject{|k| k1s.any?{|l| k.superset?(l) } }
k1s = k1s.reject{|k| k2s.any?{|l| k.superset?(l) } }
k1s + k2s
end
end
private
def _type_check(options)
same_heading!(left.heading, right.heading)
end
end # class Intersect
end # module Algebra
end # module Alf
Version data entries
5 entries across 5 versions & 1 rubygems