array-functions

Array functions

We use simple array functions.

• The function array_n returns the array number of fields a.k.a. length.

• The function array_i returns the array item at index i.

Syntax:

^```sh array_n [field separator] array_i [field separator]

Examples:

^```sh
array_n 'a b c' => 3
array_n 'a-b-c' '-' => 3

array_i 'a b c' 2 =>  'b'
array_i 'a-b-c' '-' 2 =>  'b'

Source:

^```sh array_n() { [ $# == 2 ] && awk -F "$2" "{print NF}" <<< "$1" || awk "{print NF}" <<< "$1" ; }; export -f array_n array_i() { [ $# == 3 ] && awk -F "$2" "{print $$3}" <<< "$1" || awk "{print $$2}" <<< "$1" ; }; export -f array_i