Check the string encoding : encoding « String « Ruby

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Ruby » String » encoding   Check the string encoding # -*- coding: utf-8 -*- s = "2&#xD7;2=4"     # Note multibyte multiplication character s.encoding      # => <Encoding: UTF-8> t = "2+2=4"     # All characters are in the ASCII subset of UTF-8 t.encoding      # => <Encoding: ASCII-8BIT>   Related examples in the same category 1.  Encoding and bytesize 2.  Interpret a byte as an iso-8859-15 codepoint, and transcode to UTF-8 3.  The iso-8859-1 encoding doesn't have a Euro sign, so this raises an exception 4.  Encoding constant 5.  Get utf-8 encoding 6.  Specify Unicode UTF-8, or start Ruby with -Ku option 7.  Get the position of the first multibyte char 8.  Get byte from a unicode string 9.  Get each char in a unicode

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