Method: Array#split

Defined in:
lib/active_support/core_ext/array/grouping.rb

#split(value = nil) ⇒ Object

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]]



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# File 'lib/active_support/core_ext/array/grouping.rb', line 93

def split(value = nil)
  arr = dup
  result = []
  if block_given?
    while (idx = arr.index { |i| yield i })
      result << arr.shift(idx)
      arr.shift
    end
  else
    while (idx = arr.index(value))
      result << arr.shift(idx)
      arr.shift
    end
  end
  result << arr
end