method

slice

v2.3.8 - Show latest stable - 0 notes - Class: ActiveSupport::Multibyte::Chars

1.0.0
1.1.6
1.2.6
2.0.3
2.1.0
2.2.1 (0)
2.3.8 (0)
3.0.0 (0)
3.0.9 (-2)
3.1.0 (0)
3.2.1 (0)
3.2.8 (0)
3.2.13 (0)
4.0.2
4.1.8
4.2.1
4.2.7
4.2.9
5.0.0.1
5.1.7
5.2.3
6.0.0
6.1.3.1
6.1.7.7
7.0.0
7.1.3.2
7.1.3.4
What's this?

slice(*args) public

Implements Unicode-aware slice with codepoints. Slicing on one point returns the codepoints for that character.

Example:

  'ããã«ã¡ã¯'.mb_chars.slice(2..3).to_s #=> "ã«ã¡"

Show source

# File activesupport/lib/active_support/multibyte/chars.rb, line 331
      def slice(*args)
        if args.size > 2
          raise ArgumentError, "wrong number of arguments (#{args.size} for 1)" # Do as if we were native
        elsif (args.size == 2 && !(args.first.is_a?(Numeric) || args.first.is_a?(Regexp)))
          raise TypeError, "cannot convert #{args.first.class} into Integer" # Do as if we were native
        elsif (args.size == 2 && !args[1].is_a?(Numeric))
          raise TypeError, "cannot convert #{args[1].class} into Integer" # Do as if we were native
        elsif args[0].kind_of? Range
          cps = self.class.u_unpack(@wrapped_string).slice(*args)
          result = cps.nil? ? nil : cps.pack('U*')
        elsif args[0].kind_of? Regexp
          result = @wrapped_string.slice(*args)
        elsif args.size == 1 && args[0].kind_of?(Numeric)
          character = self.class.u_unpack(@wrapped_string)[args[0]]
          result = character.nil? ? nil : [character].pack('U')
        else
          result = self.class.u_unpack(@wrapped_string).slice(*args).pack('U*')
        end
        result.nil? ? nil : chars(result)
      end

slice

Related methods