yq/operators/collect-into-array.md
2021-11-03 15:00:28 +11:00

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# Collect into Array
This creates an array using the expression between the square brackets.
## Collect empty
Running
```bash
yq eval --null-input '[]'
```
will output
```yaml
[]
```
## Collect single
Running
```bash
yq eval --null-input '["cat"]'
```
will output
```yaml
- cat
```
## Collect many
Given a sample.yml file of:
```yaml
a: cat
b: dog
```
then
```bash
yq eval '[.a, .b]' sample.yml
```
will output
```yaml
- cat
- dog
```