select_all

Array[X] select_all(Array[X?])

Filters the input Array of optional values by removing all None values. The elements in the output Array are in the same order as the input Array. If the input array is empty or contains only None values, an empty array is returned.

Parameters

1. Array[X?]: Array of optional values.

Returns: an Array of all non-None values in the input array.

Example: test_select_all.wdl

version 1.2


workflow test_select_all {
  input {
    Int? maybe_five = 5
    Int? maybe_four_but_is_not = None
    Int? maybe_three = 3
  }

  Array[Int] fivethree = select_all([maybe_five, maybe_four_but_is_not, maybe_three])
  Array[Int] expected = [5, 3]

  output {
    Boolean is_true = length(fivethree) == 2 && fivethree == expected
  }
}

{}

{
  "test_select_all.is_true": true
}