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tpl: Add union template func

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digitalcraftsman 2017-03-12 23:04:12 +01:00 committed by Bjørn Erik Pedersen
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content/templates/functions.md
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@ -214,6 +214,23 @@ e.g.
</ul>
### union
Given two arrays (or slices) A and B, this function will return a new array that contains the elements or objects that belong to either A or to B or to both. The elements supported are strings, integers and floats (only float64).
```
{{ union (slice 1 2 3) (slice 3 4 5) }}
<!-- returns [1 2 3 4 5] -->
{{ union (slice 1 2 3) nil }}
<!-- returns [1 2 3] -->
{{ union nil (slice 1 2 3) }}
<!-- returns [1 2 3] -->
{{ union nil nil }}
<!-- returns an error because both arrays/slices have to be of the same type -->
```
### isset
Returns true if the parameter is set.
Takes either a slice, array or channel and an index or a map and a key as input.