| cue eval -i lists.cue |
| cmp stdout expect-stdout-cue |
| |
| -- frontmatter.toml -- |
| title = "Lists" |
| description = "" |
| |
| -- text.md -- |
| Lists define arbitrary sequences of CUE values. |
| A list can be closed or open ended. |
| Open-ended lists may have some predefined elements, but may have |
| additional, possibly typed elements. |
| |
| In the example we define `IP` to be a list of `4` elements of type `uint8`, which |
| is a predeclared value of `>=0 & <=255`. |
| `PrivateIP` defines the IP ranges defined for private use. |
| Note that as it is already defined to be an `IP`, the length of the list |
| is already fixed at `4` and we do not have to specify a value for all elements. |
| Also note that instead of writing `...uint8`, we could have written `...` |
| as the type constraint is already already implied by `IP`. |
| |
| The output contains a valid private IP address (`myIP`) |
| and an invalid one (`yourIP`). |
| |
| -- lists.cue -- |
| IP: 4 * [ uint8 ] |
| |
| PrivateIP: IP |
| PrivateIP: [10, ...uint8] | |
| [192, 168, ...] | |
| [172, >=16 & <=32, ...] |
| |
| myIP: PrivateIP |
| myIP: [10, 2, 3, 4] |
| |
| yourIP: PrivateIP |
| yourIP: [11, 1, 2, 3] |
| |
| -- expect-stdout-cue -- |
| IP: [uint8, uint8, uint8, uint8] |
| PrivateIP: [10, uint8, uint8, uint8] | [192, 168, uint8, uint8] | [172, >=16 & <=32 & uint8, uint8, uint8] |
| myIP: [10, 2, 3, 4] |
| yourIP: _|_ // ; empty disjunction: conflicting values 192 and 11; empty disjunction: conflicting values 172 and 11 |
