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Merge commit 'de0df119b504a91c9e1f442b07954f366ffb2932'

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Bjørn Erik Pedersen
2024-11-13 11:07:57 +01:00
parent e79ee0d516 de0df119b5
commit 3477d9fcec
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13
docs/content/en/functions/compare/Conditional.md
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@@ -12,26 +12,17 @@ action:
aliases: [/functions/cond]
---
The CONTROL argument is a boolean value that indicates whether the function should return ARG1 or ARG2. If CONTROL is `true`, the function returns ARG1. Otherwise, the function returns ARG2.
If CONTROL is truthy the function returns ARG1, otherwise it returns ARG2.
```go-html-template
{{ $qty := 42 }}
{{ cond (le $qty 3) "few" "many" }} → many
```
The CONTROL argument must be either `true` or `false`. To cast a non-boolean value to boolean, pass it through the `not` operator twice.
```go-html-template
{{ cond (42 | not | not) "truthy" "falsy" }} → truthy
{{ cond ("" | not | not) "truthy" "falsy" }} → falsy
```
{{% note %}}
Unlike [ternary operators] in other languages, the `cond` function does not perform [short-circuit evaluation]. The function evaluates both ARG1 and ARG2, regardless of the CONTROL value.
Unlike [ternary operators] in other languages, the `compare.Conditional` function does not perform [short-circuit evaluation]. It evaluates both ARG1 and ARG2 regardless of the CONTROL value.
[short-circuit evaluation]: https://en.wikipedia.org/wiki/Short-circuit_evaluation
[ternary operators]: https://en.wikipedia.org/wiki/Ternary_conditional_operator
{{% /note %}}
Due to the absence of short-circuit evaluation, these examples throw an error: