Handling N-dimensional Lists in Elixir with Ndim

Thu, 12 Dec 2024 04:00:56 +0800

Process the n-dimensional list #

In data processing, I constantly have to work with the n-dimensional list, which something looks like these:

# 2 dimensional list (matrix)
[
 [1, 2],
 [3, 4]
]

As an elixir alchemist, use Enum.map/2 to transform list is our second nature. However, when dealing with nested lists, transforming elements at specific depths requires multiple nested mapping operations. Consider these approaches:

[[1, 2], [3, 4]]
|> Enum.map(fn row ->
 Enum.map(row, fn i ->
 i * 10
 end)
 end)

$> [[10, 20], [30, 40]]

And the things get worse when we like to work with 3-dimensional list or deeper:

Elixir on Mostly Functional

Handling N-dimensional Lists in Elixir with Ndim

Process the n-dimensional list #