[ruby/rdoc] Use flat_map for better performance

https://github.com/ruby/rdoc/commit/76192a280d

4 files changed, 7 insertions, 7 deletions

diff --git a/lib/rdoc/generator/darkfish.rb b/lib/rdoc/generator/darkfish.rb
index 60e0265e8c..7a7a95a9b9 100644
--- a/lib/rdoc/generator/darkfish.rb
+++ b/lib/rdoc/generator/darkfish.rb
@@ -610,7 +610,7 @@ class RDoc::Generator::Darkfish
 
     @classes = @store.all_classes_and_modules.sort
     @files   = @store.all_files.sort
-    @methods = @classes.map { |m| m.method_list }.flatten.sort
+    @methods = @classes.flat_map { |m| m.method_list }.sort
     @modsort = get_sorted_module_list @classes
   end
 
diff --git a/lib/rdoc/generator/json_index.rb b/lib/rdoc/generator/json_index.rb
index 3a1000033d..c454910d5c 100644
--- a/lib/rdoc/generator/json_index.rb
+++ b/lib/rdoc/generator/json_index.rb
@@ -230,9 +230,9 @@ class RDoc::Generator::JsonIndex
   def index_methods
     debug_msg "  generating method search index"
 
-    list = @classes.uniq.map do |klass|
+    list = @classes.uniq.flat_map do |klass|
       klass.method_list
-    end.flatten.sort_by do |method|
+    end.sort_by do |method|
       [method.name, method.parent.full_name]
     end
 
diff --git a/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml b/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml
index c8a422a521..54a376c9e5 100644
--- a/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml
+++ b/lib/rdoc/generator/template/darkfish/table_of_contents.rhtml
@@ -47,9 +47,9 @@
 
 <h2 id="methods">Methods</h2>
 <ul>
-<%- @store.all_classes_and_modules.map do |mod|
+<%- @store.all_classes_and_modules.flat_map do |mod|
      mod.method_list
-   end.flatten.sort.each do |method| %>
+   end.sort.each do |method| %>
   <li class="method">
     <a href="<%= method.path %>"><%= h method.pretty_name %></a>
     &mdash;
diff --git a/lib/rdoc/markup/to_joined_paragraph.rb b/lib/rdoc/markup/to_joined_paragraph.rb
index aaa343157e..31cbe0853c 100644
--- a/lib/rdoc/markup/to_joined_paragraph.rb
+++ b/lib/rdoc/markup/to_joined_paragraph.rb
@@ -25,9 +25,9 @@ class RDoc::Markup::ToJoinedParagraph < RDoc::Markup::Formatter
   def accept_paragraph paragraph
     parts = paragraph.parts.chunk do |part|
       String === part
-    end.map do |string, chunk|
+    end.flat_map do |string, chunk|
       string ? chunk.join.rstrip : chunk
-    end.flatten
+    end
 
     paragraph.parts.replace parts
   end