last

[value] |> value | nothing

Returns the last element in the input iterator.

If the iterator is empty, nothing is returned.

Examples

Basic usage

import 'iterators'

from [1, 2, 3] last

Result:

3

Combined with select

import 'iterators'

from
  [1, 2, 3]
  select x => x * 2
  last

Result:

6

Combined with until for early termination

import 'iterators'

let Error: { error: text }

let results = [
  { value = 1 },
  { value = 2 },
  { error = 'something went wrong' }
]

from
  results
  until r => r is Error
  last

Result:

{ error = 'something went wrong' }