method

rindex

v2.3.8 - Show latest stable - Class: ActiveSupport::Multibyte::Chars

rindex(needle, offset=nil)

public

Returns the position needle in the string, counting in codepoints, searching backward from offset or the end of the string. Returns nil if needle isn’t found.

Example:

  'CafÃ© pÃ©riferÃ´l'.mb_chars.rindex('Ã©') #=> 6
  'CafÃ© pÃ©riferÃ´l'.mb_chars.rindex(/\w/u) #=> 13

# File activesupport/lib/active_support/multibyte/chars.rb, line 211
      def rindex(needle, offset=nil)
        offset ||= length
        wrapped_offset = self.first(offset).wrapped_string.length
        index = @wrapped_string.rindex(needle, wrapped_offset)
        index ? (self.class.u_unpack(@wrapped_string.slice(0...index)).size) : nil
      end

rindex

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