Lists can be specified using list comprehensions.
List comprehensions are constructed from
for loops, if guards, and let declarations.
They can be combined in any order,
on a single line or split across multiple lines.
file.cue
#n: [1, 2, 3, 4, 5, 6, 7, 8, 9]
#s: ["a", "b", "c"]
// Large square numbers.
a: [
for x in #n
let s = x * x
if s > 50 {s},
]
// Squares of even numbers.
b: [for x in #n if rem(x, 2) == 0 {x * x}]
// The Cartesian product of two lists.
c: [
for letter in #s
for number in #n
if number < 3 {
"\(letter)-\(number)"
},
]TERMINAL
$ cue export file.cue --out cue
// Large square numbers.
a: [64, 81]
// Squares of even numbers.
b: [4, 16, 36, 64]
// The Cartesian product of two lists.
c: ["a-1", "a-2", "b-1", "b-2", "c-1", "c-2"]