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Added pick including all keys example

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This commit is contained in:
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
```
## 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
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",
},
},
{
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",
skipDoc: true,