Sha256: c9d0df941f2771d2028ddb2b2bcd37d0ea809c534662ed92af2c3d1f40b49f6b
Contents?: true
Size: 917 Bytes
Versions: 9
Compression:
Stored size: 917 Bytes
Contents
# encoding: utf-8
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.'
def on_send(node)
_receiver, method_name, *args = *node
return unless method_name == :each_with_object
return unless args.length == 1
arg = args.first
add_offense(node, :expression) if arg.int_type? || arg.float_type?
end
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems