I'm really confused about the difference between each.with_index
and each_with_index
. They have different types but seem to be identical in practice.
I'm really confused about the difference between each.with_index
and each_with_index
. They have different types but seem to be identical in practice.
The with_index
method takes an optional parameter to offset the starting index. each_with_index
does the same thing, but has no optional starting index.
For example:
[:foo, :bar, :baz].each.with_index(2) do |value, index|
puts "#{index}: #{value}"
end
[:foo, :bar, :baz].each_with_index do |value, index|
puts "#{index}: #{value}"
end
Outputs:
2: foo
3: bar
4: baz
0: foo
1: bar
2: baz