| cue export fold.cue |
| cmp stdout expect-stdout-cue |
| |
| -- frontmatter.toml -- |
| title = "Folding of Single-Field Structs" |
| description = "" |
| |
| -- text.md -- |
| In JSON, one defines nested values, one value at a time. |
| Another way to look at this is that a JSON configuration is a set of |
| path-value pairs. |
| |
| In CUE one defines a set of paths to which to apply |
| a concrete value or constraint all at once. |
| Because of CUE's order independence, values get merged |
| |
| This example shows some path-value pairs, as well as |
| a constraint that is applied to those to validate them. |
| <!-- |
| This also gives a handy shorthand for writing structs with single |
| members. |
| --> |
| |
| -- fold.cue -- |
| // path-value pairs |
| outer: middle1: inner: 3 |
| outer: middle2: inner: 7 |
| |
| // collection-constraint pair |
| outer: [string]: inner: int |
| |
| -- expect-stdout-cue -- |
| { |
| "outer": { |
| "middle1": { |
| "inner": 3 |
| }, |
| "middle2": { |
| "inner": 7 |
| } |
| } |
| } |
