method

rindex

v3.0.0 - Show latest stable - 0 notes - Class: ActiveSupport::Multibyte::Chars

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What's this?

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

Show source

# File activesupport/lib/active_support/multibyte/chars.rb, line 163
        def rindex(needle, offset=nil)
          offset ||= length
          wrapped_offset = first(offset).wrapped_string.length
          index = @wrapped_string.rindex(needle, wrapped_offset)
          index ? (Unicode.u_unpack(@wrapped_string.slice(0...index)).size) : nil
        end

rindex

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