Sha256: a8d8eb4712fe12a1d31624f8498088de24c36cffde025bfaadcaf76c11ca4832
Contents?: true
Size: 889 Bytes
Versions: 8
Compression:
Stored size: 889 Bytes
Contents
# frozen_string_literal: true
module RuboCop
module Cop
module Lint
# This cop checks if each_with_object is called with an immutable
# argument. Since the argument is the object that the given block shall
# make calls on to build something based on the enumerable that
# each_with_object iterates over, an immutable argument makes no sense.
# It's definitely a bug.
#
# @example
#
# sum = numbers.each_with_object(0) { |e, a| a += e }
class EachWithObjectArgument < Cop
MSG = 'The argument to each_with_object can not be immutable.'.freeze
def_node_matcher :each_with_object?, '(send _ :each_with_object $_)'
def on_send(node)
each_with_object?(node) do |arg|
add_offense(node, :expression) if arg.immutable_literal?
end
end
end
end
end
end
Version data entries
8 entries across 8 versions & 2 rubygems