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AS guide: documents String#parameterize

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  1. +13 −0 railties/guides/source/active_support_core_extensions.textile
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13 railties/guides/source/active_support_core_extensions.textile
@@ -1437,6 +1437,19 @@ end
NOTE: Defined in +active_support/core_ext/string/inflections.rb+.
+h5. +parameterize+
+
+The method +parameterize+ normalizes its receiver in a way that can be used in pretty URLs.
+
+<ruby>
+"John Smith".parameterize # => "john-smith"
+"Kurt Gödel".parameterize # => "kurt-godel"
+</ruby>
+
+In fact, the result string is wrapped in an instance of +ActiveSupport::Multibyte::Chars+.
+
+NOTE: Defined in +active_support/core_ext/string/inflections.rb+.
+
h3. Extensions to +Numeric+
h4. Bytes

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