Sha256: 97d680ec3a47008919ce9181dde8af0a7e4293589079ca79a0adbfa5eda61f33
Contents?: true
Size: 767 Bytes
Versions: 13
Compression:
Stored size: 767 Bytes
Contents
module Bmg
class Ordering
def initialize(attrs)
@attrs = attrs
end
attr_reader :attrs
def call(t1, t2)
comparator.call(t1, t2)
end
def comparator
@comparator ||= ->(t1, t2) { compare_attrs(t1, t2) }
end
def compare_attrs(t1, t2)
attrs.each do |(attr,direction)|
a1, a2 = t1[attr], t2[attr]
if a1.nil? && a2.nil?
0
elsif a1.nil?
return direction == :desc ? -1 : 1
elsif a2.nil?
return direction == :desc ? 1 : -1
elsif a1.respond_to?(:<=>)
c = a1 <=> a2
unless c.nil? || c==0
return direction == :desc ? -c : c
end
end
end
0
end
end # class Ordering
end # module Bmg
Version data entries
13 entries across 13 versions & 1 rubygems