Remove intermediary arrays when creating hash maps from results (#9291)

app/models/concerns/account_interactions.rb

@@ -45,9 +45,9 @@ module AccountInteractions
     end
 
     def domain_blocking_map(target_account_ids, account_id)
-      accounts_map    = Account.where(id: target_account_ids).select('id, domain').map { |a| [a.id, a.domain] }.to_h
+      accounts_map    = Account.where(id: target_account_ids).select('id, domain').each_with_object({}) { |a, h| h[a.id] = a.domain }
       blocked_domains = domain_blocking_map_by_domain(accounts_map.values.compact, account_id)
-      accounts_map.map { |id, domain| [id, blocked_domains[domain]] }.to_h
+      accounts_map.reduce({}) { |h, (id, domain)| h.merge(id => blocked_domains[domain]) }
     end
 
     def domain_blocking_map_by_domain(target_domains, account_id)

app/models/notification.rb

@@ -75,7 +75,7 @@ class Notification < ApplicationRecord
 
       return if account_ids.empty?
 
-      accounts = Account.where(id: account_ids).map { |a| [a.id, a] }.to_h
+      accounts = Account.where(id: account_ids).each_with_object({}) { |a, h| h[a.id] = a }
 
       cached_items.each do |item|
         item.from_account = accounts[item.from_account_id]

app/models/setting.rb

@@ -40,7 +40,7 @@ class Setting < RailsSettings::Base
 
     def all_as_records
       vars    = thing_scoped
-      records = vars.map { |r| [r.var, r] }.to_h
+      records = vars.each_with_object({}) { |r, h| h[r.var] = r }
 
       default_settings.each do |key, default_value|
         next if records.key?(key) || default_value.is_a?(Hash)

app/models/status.rb

@@ -310,19 +310,19 @@ class Status < ApplicationRecord
     end
 
     def favourites_map(status_ids, account_id)
-      Favourite.select('status_id').where(status_id: status_ids).where(account_id: account_id).map { |f| [f.status_id, true] }.to_h
+      Favourite.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |f, h| h[f.status_id] = true }
     end
 
     def reblogs_map(status_ids, account_id)
-      select('reblog_of_id').where(reblog_of_id: status_ids).where(account_id: account_id).reorder(nil).map { |s| [s.reblog_of_id, true] }.to_h
+      select('reblog_of_id').where(reblog_of_id: status_ids).where(account_id: account_id).reorder(nil).each_with_object({}) { |s, h| h[s.reblog_of_id] = true }
     end
 
     def mutes_map(conversation_ids, account_id)
-      ConversationMute.select('conversation_id').where(conversation_id: conversation_ids).where(account_id: account_id).map { |m| [m.conversation_id, true] }.to_h
+      ConversationMute.select('conversation_id').where(conversation_id: conversation_ids).where(account_id: account_id).each_with_object({}) { |m, h| h[m.conversation_id] = true }
     end
 
     def pins_map(status_ids, account_id)
-      StatusPin.select('status_id').where(status_id: status_ids).where(account_id: account_id).map { |p| [p.status_id, true] }.to_h
+      StatusPin.select('status_id').where(status_id: status_ids).where(account_id: account_id).each_with_object({}) { |p, h| h[p.status_id] = true }
     end
 
     def reload_stale_associations!(cached_items)
@@ -337,7 +337,7 @@ class Status < ApplicationRecord
 
       return if account_ids.empty?
 
-      accounts = Account.where(id: account_ids).map { |a| [a.id, a] }.to_h
+      accounts = Account.where(id: account_ids).each_with_object({}) { |a, h| h[a.id] = a }
 
       cached_items.each do |item|
         item.account = accounts[item.account_id]

app/models/trending_tags.rb

@@ -18,7 +18,7 @@ class TrendingTags
     def get(limit)
       key     = "#{KEY}:#{Time.now.utc.beginning_of_day.to_i}"
       tag_ids = redis.zrevrange(key, 0, limit - 1).map(&:to_i)
-      tags    = Tag.where(id: tag_ids).to_a.map { |tag| [tag.id, tag] }.to_h
+      tags    = Tag.where(id: tag_ids).to_a.each_with_object({}) { |tag, h| h[tag.id] = tag }
       tag_ids.map { |tag_id| tags[tag_id] }.compact
     end