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AS guide: documents String#pluralize

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  1. +16 −0 railties/guides/source/active_support_core_extensions.textile
16 railties/guides/source/active_support_core_extensions.textile
@@ -1249,6 +1249,22 @@ The call +str.last(n)+ is equivalent to +str.from(-n)+ if +n+ > 0, and returns a
NOTE: Defined in +active_support/core_ext/string/access.rb+.
+h4. Inflections
+h5. +pluralize+
+The method +pluralize+ returns the plural of its receiver:
+"table".pluralize # => "tables"
+"ruby".pluralize # => "rubies"
+"equipment".pluralize # => "equipment"
+As the previous example shows, Active Support knows some irregular plurals and a few uncountable nouns. Builtin rules can be extended in +config/initializers/inflections.rb+. That file is generated by the +rails+ command and has instructions in comments.
+NOTE: Defined in +active_support/core_ext/string/inflections.rb+.
h3. Extensions to +Numeric+
h4. Bytes
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