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34 lines
596 B
Markdown
34 lines
596 B
Markdown
# Formatting Expressions
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`From version v4.41+`
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You can put expressions into `.yq` files, use whitespace and comments to break up complex expressions and explain what's going on.
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## Using expression files and comments
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Given a sample.yaml file of:
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```yaml
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a:
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b: old
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```
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And an 'update.yq' expression file of:
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```bash
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# This is a yq expression that updates the map
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# for several great reasons outlined here.
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.a.b = "new" # line comment here
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| .a.c = "frog"
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# Now good things will happen.
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```
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then
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```bash
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yq --from-file update.yq sample.yml
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```
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will output
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```yaml
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a:
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b: new
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c: frog
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```
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