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Versions: 52
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Stored size: 1.33 KB
Contents
module Enumerable
def map_and_find(not_found=nil)
each do |x|
val = yield(x)
return val if val
end
not_found
end
def map_with_index(res=[])
each_with_index {|x, i| res << yield(x, i)}
res
end
def build_hash(res={})
each do |x|
pair = block_given? ? yield(x) : x
res[pair.first] = pair.last if pair
end
res
end
def map_hash(res={})
each do |x|
v = yield x
res[x] = v
end
res
end
def rest
self[1..-1] || []
end
class MultiSender
undef_method(*(instance_methods.map{|m| m.to_s} - %w*__id__ __send__ object_id*))
def initialize(enumerable, method)
@enumerable = enumerable
@method = method
end
def method_missing(name, *args, &block)
@enumerable.send(@method) { |x| x.send(name, *args, &block) }
end
end
def *()
MultiSender.new(self, :map)
end
def where
MultiSender.new(self, :select)
end
def where_not
MultiSender.new(self, :reject)
end
def drop_while
drop = 0
drop += 1 while yield(self[drop])
self[drop..-1]
end
def take_while
take = 0
take += 1 while yield(self[take])
self[0..take-1]
end
end
class Object
def in?(enum)
!enum.nil? && enum.include?(self)
end
def not_in?(enum)
enum.nil? || !enum.include?(self)
end
end
Version data entries
52 entries across 52 versions & 2 rubygems