instance method `split`

Ruby on Rails 4.1.16

Since v3.0.20

Available in: v3.0.20 v3.1.12 v3.2.22.5 v4.0.13 v4.1.16 v4.2.9 v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

split(value = nil)

Divides the array into one or more subarrays based on a delimiting value or the result of an optional block.

[1, 2, 3, 4, 5].split(3)              # => [[1, 2], [4, 5]]
(1..10).to_a.split { |i| i % 3 == 0 } # => [[1, 2], [4, 5], [7, 8], [10]]

Parameters

value opt = nil

Source

# File activesupport/lib/active_support/core_ext/array/grouping.rb, line 86
  def split(value = nil)
    if block_given?
      inject([[]]) do |results, element|
        if yield(element)
          results << []
        else
          results.last << element
        end

        results
      end
    else
      results, arr = [[]], self.dup
      until arr.empty?
        if (idx = arr.index(value))
          results.last.concat(arr.shift(idx))
          arr.shift
          results << []
        else
          results.last.concat(arr.shift(arr.size))
        end
      end
      results
    end
  end

Defined in activesupport/lib/active_support/core_ext/array/grouping.rb line 86 · View on GitHub · Improve this page · Find usages on GitHub

Defined in Array

Signature

Parameters