Apply several performance suggestions from the 'fasterer' gem.

Author: jperville

.fasterer.yml

@@ -0,0 +1,24 @@
+speedups:
+  parallel_assignment: false
+  rescue_vs_respond_to: true
+  module_eval: true
+  shuffle_first_vs_sample: true
+  for_loop_vs_each: true
+  each_with_index_vs_while: false
+  map_flatten_vs_flat_map: true
+  reverse_each_vs_reverse_each: true
+  select_first_vs_detect: true
+  sort_vs_sort_by: true
+  fetch_with_argument_vs_block: true
+  keys_each_vs_each_key: true
+  hash_merge_bang_vs_hash_brackets: true
+  block_vs_symbol_to_proc: true
+  proc_call_vs_yield: true
+  gsub_vs_tr: true
+  select_last_vs_reverse_detect: true
+  getter_vs_attr_reader: false
+  setter_vs_attr_writer: false
+
+exclude_paths:
+  - 'vendor/**/*.rb'
+  - 'spec/**/*.rb'

.gitignore

@@ -6,4 +6,5 @@
 /spec.pdf
 /pkg/
 /.rbx/
+/.bundle/
 Gemfile.lock

Gemfile

@@ -8,6 +8,7 @@ gem 'jsonlint',         git: "git://github.com/dougbarth/jsonlint.git", platform
 group :development do
   gem 'rdf-turtle',     git: "git://github.com/ruby-rdf/rdf-turtle.git", branch: "develop"
   gem 'rdf-trig',       git: "git://github.com/ruby-rdf/rdf-trig.git", branch: "develop"
+  gem 'fasterer'
 end
 
 group :development, :test do

lib/json/ld/compact.rb

@@ -46,7 +46,7 @@ def compact(element, property = nil)
         inside_reverse = property == '@reverse'
         result = {}
 
-        element.keys.each do |expanded_property|
+        element.each_key do |expanded_property|
           expanded_value = element[expanded_property]
           debug("") {"#{expanded_property}: #{expanded_value.inspect}"}
 

lib/json/ld/context.rb

@@ -337,7 +337,7 @@ def parse(local_context, remote_contexts = [])
             defined = {}
           # For each key-value pair in context invoke the Create Term Definition subalgorithm, passing result for active context, context for local context, key, and defined
             depth do
-              context.keys.each do |key|
+              context.each_key do |key|
                 result.create_term_definition(context, key, defined)
               end
             end

lib/json/ld/resource.rb

@@ -174,7 +174,7 @@ def update_obj(obj, reference_map)
               stub: true
               )
           else
-            obj.keys.each do |k|
+            obj.each_key do |k|
               obj[k] = update_obj(obj[k], reference_map)
             end
             obj