Add empty filter
#171
Merged
Add empty filter
#171
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I considered `isEmpty` (and `is_empty`) as well, but I went with the
simpler `empty` because its use is mostly limited to `{{ if }}`
statements. It's unlikely users are directly printing booleans, and the
filter is more-or-less useless in tags like `{{ echo }}` or `{{ for }}`.
Given the relatively narrow scope, I don't think there are readability
issues with omitting the `is` from the name. Generally it'll be used in
contexts where booleans are expected, like
```vto
{{ if items |> empty }}
{{ set isMissingTags = tags |> empty }}
{{ /if }}
```
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I considered
isEmpty(andis_empty) as well, but I went with the simpleremptybecause its use is mostly limited to{{ if }}statements. It's unlikely users are directly printing booleans, and the filter is more-or-less useless in tags like{{ echo }}or{{ for }}. Given the relatively narrow scope, I don't think there are readability issues with omitting theisfrom the name. Generally it'll be used in contexts where booleans are expected, like{{ if items |> empty }} {{ set isMissingTags = tags |> empty }} {{ /if }}Resolves #153