Sha256: fb7d836bae343275506a4a37be8455c4efff8147e33964de7fa0bf1db2aa5d39
Contents?: true
Size: 838 Bytes
Versions: 29
Compression:
Stored size: 838 Bytes
Contents
module Bmg
class Summarizer
#
# Generic summarizer that takes a Proc àla each_with_object.
#
# Example:
#
# # direct ruby usage
# Bmg::Summarizer.by_proc{|t,memo| ... }.summarize(...)
#
class ByProc < Summarizer
def initialize(least, by_proc)
@least = least
@by_proc = by_proc
end
# Returns [] as least value.
def least
@least
end
# Adds val to the memo array
def happens(memo, val)
@by_proc.call(val, memo)
end
def finalize(memo)
memo
end
end # class ByProc
# Factors a distinct summarizer
def self.by_proc(least = nil, proc = nil, &bl)
least, proc = nil, least if least.is_a?(Proc)
ByProc.new(least, proc || bl)
end
end # class Summarizer
end # module Bmg
Version data entries
29 entries across 29 versions & 1 rubygems