Sha256: 0410e9cc6f96daa2704582b56f184fb6a4fef24a81cc0ad869c7f4e857b35406
Contents?: true
Size: 652 Bytes
Versions: 31
Compression:
Stored size: 652 Bytes
Contents
module Bmg
class Summarizer
#
# Collect the distinct values as an array.
#
# Example:
#
# # direct ruby usage
# Bmg::Summarizer.distinct(:qty).summarize(...)
#
class Distinct < Summarizer
# Returns [] as least value.
def least()
{}
end
# Adds val to the memo array
def _happens(memo, val)
memo[val] = true
memo
end
def finalize(memo)
memo.keys
end
end # class Distinct
# Factors a distinct summarizer
def self.distinct(*args, &bl)
Distinct.new(*args, &bl)
end
end # class Summarizer
end # module Bmg
Version data entries
31 entries across 31 versions & 1 rubygems