Sha256: c128ad81fe7a66fe3896480b0f4892cb1112227c593139213ba16bde57ea685f
Contents?: true
Size: 540 Bytes
Versions: 52
Compression:
Stored size: 540 Bytes
Contents
module Bmg
class Summarizer
#
# Sum summarizer.
#
# Example:
#
# # direct ruby usage
# Bmg::Summarizer.sum(:qty).summarize(...)
#
class Sum < Summarizer
# Returns 0 as least value.
def least()
0
end
# Keep memo+val as new value
def _happens(memo, val)
memo + (val.nil? ? 0 : val)
end
end # class Sum
# Factors a sum summarizer
def self.sum(*args, &bl)
Sum.new(*args, &bl)
end
end # class Summarizer
end # module Bmg
Version data entries
52 entries across 52 versions & 1 rubygems