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Added pick including all keys example

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Mike Farah 2024-09-06 12:32:28 +10:00
parent c76e432de3
commit 42b92aff13
2 changed files with 33 additions and 0 deletions
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24
pkg/yqlib/doc/operators/pick.md
View File

@ -26,6 +26,30 @@ myMap:
cat: meow cat: meow
``` ```
## Pick keys from map, included all the keys
We create a map of the picked keys plus all the current keys, and run that through unique
Given a sample.yml file of:
```yaml
myMap:
cat: meow
dog: bark
thing: hamster
hamster: squeak
```
then
```bash
yq '.myMap |= pick( (["thing"] + keys) | unique)' sample.yml
```
will output
```yaml
myMap:
thing: hamster
cat: meow
dog: bark
hamster: squeak
```
## Pick indices from array ## Pick indices from array
Note that the order of the indices matches the pick order and non existent indices are skipped. Note that the order of the indices matches the pick order and non existent indices are skipped.

9
pkg/yqlib/operator_pick_test.go
View File

@ -14,6 +14,15 @@ var pickOperatorScenarios = []expressionScenario{
"D0, P[], (!!map)::myMap: {hamster: squeak, cat: meow}\n", "D0, P[], (!!map)::myMap: {hamster: squeak, cat: meow}\n",
}, },
}, },
{
description: "Pick keys from map, included all the keys",
subdescription: "We create a map of the picked keys plus all the current keys, and run that through unique",
document: "myMap: {cat: meow, dog: bark, thing: hamster, hamster: squeak}\n",
expression: `.myMap |= pick( (["thing"] + keys) | unique)`,
expected: []string{
"D0, P[], (!!map)::myMap: {thing: hamster, cat: meow, dog: bark, hamster: squeak}\n",
},
},
{ {
description: "Pick splat", description: "Pick splat",
skipDoc: true, skipDoc: true,