class Array

Returns a deep copy of array.

array = [1, [2, 3]]
dup   = array.deep_dup
dup[1][2] = 4

array[1][2] # => nil
dup[1][2]   # => 4

# File lib/rack/cargo/core_ext/deep_dup.rb, line 34
def deep_dup
  map(&:deep_dup)
end