From ea65d92f1924648e72f93bb0e8e5fc62a56d0bac Mon Sep 17 00:00:00 2001 From: Ryuta Kamizono Date: Wed, 9 Jan 2019 18:09:01 +0900 Subject: Enable `Lint/UselessAssignment` cop to avoid unused variable warnings (#34904) * Enable `Lint/UselessAssignment` cop to avoid unused variable warnings Since we've addressed the warning "assigned but unused variable" frequently. 370537de05092aeea552146b42042833212a1acc 3040446cece8e7a6d9e29219e636e13f180a1e03 5ed618e192e9788094bd92c51255dda1c4fd0eae 76ebafe594fc23abc3764acc7a3758ca473799e5 And also, I've found the unused args in c1b14ad which raises no warnings by the cop, it shows the value of the cop. --- .../active_record/connection_adapters/postgresql/schema_statements.rb | 4 ++-- activerecord/lib/active_record/timestamp.rb | 2 +- activerecord/lib/arel/visitors/informix.rb | 3 ++- activerecord/lib/arel/visitors/oracle12.rb | 2 +- activerecord/lib/arel/visitors/to_sql.rb | 4 +--- 5 files changed, 7 insertions(+), 8 deletions(-) (limited to 'activerecord/lib') diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb index 16260fe565..3516bef75a 100644 --- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb +++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb @@ -22,8 +22,8 @@ module ActiveRecord def create_database(name, options = {}) options = { encoding: "utf8" }.merge!(options.symbolize_keys) - option_string = options.inject("") do |memo, (key, value)| - memo += case key + option_string = options.each_with_object(+"") do |(key, value), memo| + memo << case key when :owner " OWNER = \"#{value}\"" when :template diff --git a/activerecord/lib/active_record/timestamp.rb b/activerecord/lib/active_record/timestamp.rb index d32f971ad1..e19077eb88 100644 --- a/activerecord/lib/active_record/timestamp.rb +++ b/activerecord/lib/active_record/timestamp.rb @@ -56,7 +56,7 @@ module ActiveRecord def touch_attributes_with_time(*names, time: nil) attribute_names = timestamp_attributes_for_update_in_model attribute_names |= names.map(&:to_s) - attribute_names.index_with(time ||= current_time_from_proper_timezone) + attribute_names.index_with(time || current_time_from_proper_timezone) end private diff --git a/activerecord/lib/arel/visitors/informix.rb b/activerecord/lib/arel/visitors/informix.rb index 0a9713794e..208fa15aef 100644 --- a/activerecord/lib/arel/visitors/informix.rb +++ b/activerecord/lib/arel/visitors/informix.rb @@ -15,8 +15,9 @@ module Arel # :nodoc: all collector << "ORDER BY " collector = inject_join o.orders, collector, ", " end - collector = maybe_visit o.lock, collector + maybe_visit o.lock, collector end + def visit_Arel_Nodes_SelectCore(o, collector) collector = inject_join o.projections, collector, ", " if o.source && !o.source.empty? diff --git a/activerecord/lib/arel/visitors/oracle12.rb b/activerecord/lib/arel/visitors/oracle12.rb index b092aa95e0..9a7fe4d626 100644 --- a/activerecord/lib/arel/visitors/oracle12.rb +++ b/activerecord/lib/arel/visitors/oracle12.rb @@ -20,7 +20,7 @@ module Arel # :nodoc: all def visit_Arel_Nodes_SelectOptions(o, collector) collector = maybe_visit o.offset, collector collector = maybe_visit o.limit, collector - collector = maybe_visit o.lock, collector + maybe_visit o.lock, collector end def visit_Arel_Nodes_Limit(o, collector) diff --git a/activerecord/lib/arel/visitors/to_sql.rb b/activerecord/lib/arel/visitors/to_sql.rb index f9fe4404eb..b5a960ce68 100644 --- a/activerecord/lib/arel/visitors/to_sql.rb +++ b/activerecord/lib/arel/visitors/to_sql.rb @@ -208,14 +208,12 @@ module Arel # :nodoc: all end visit_Arel_Nodes_SelectOptions(o, collector) - - collector end def visit_Arel_Nodes_SelectOptions(o, collector) collector = maybe_visit o.limit, collector collector = maybe_visit o.offset, collector - collector = maybe_visit o.lock, collector + maybe_visit o.lock, collector end def visit_Arel_Nodes_SelectCore(o, collector) -- cgit v1.2.3