␡
- Slicing an Array
- Iterating over an Array
- Creating Enumerable Classes
- Sorting an Array
- Iterating over Nested Arrays
- Modifying All the Values in an Array
- Sorting Nested Arrays
- Building a Hash from a Config File
- Sorting a Hash by Key or Value
- Eliminating Duplicate Data from Arrays (Sets)
- Working with Nested Sets
This chapter is from the book
This chapter is from the book
This chapter is from the book
This chapter is from the book
Iterating over Nested Arrays
You can #flatten the Array as I have done above. For most cases, this works just fine—it’s very fast. But it’s perhaps not quite as flexible as a recursive implementation:
class Array
def each_recur(&block)
each do |elem|
if elem.is_a? Array
elem.each_recur &block
else
block.call elem
end
end
end
end
my_ary = [[1, 2, 3, 4],[5, 6, 7, 8]]
#=> [[1, 2, 3, 4], [5, 6, 7, 8]]
my_ary.each_recur { |elem| print(elem, " ") }
Produces:
1 2 3 4 5 6 7 8