Sha256: 072ae19c952e2c4932956803fdb29a24a82483f13d93d10e5656caad3e8d03a0
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Size: 631 Bytes
Versions: 34
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Stored size: 631 Bytes
Contents
module Bmg
module TupleAlgebra
def allbut(tuple, butlist)
tuple.reject{|k,v| butlist.include?(k) }
end
module_function :allbut
def project(tuple, attrlist)
tuple.reject{|k,v| !attrlist.include?(k) }
end
module_function :project
def rename(tuple, renaming)
tuple.each_with_object({}){|(k,v),m|
m[renaming[k] || k] = v
m
}
end
module_function :rename
def symbolize_keys(h)
return h if h.empty?
h.each_with_object({}){|(k,v),h| h[k.to_sym] = v }
end
module_function :symbolize_keys
end # module TupleAlgebra
end # module Bmg
Version data entries
34 entries across 34 versions & 1 rubygems