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compare.Conditional | Returns one of two arguments depending on the value of the control argument. |
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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.
{{ $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.
{{ 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.
{{% /note %}}
Due to the absence of short-circuit evaluation, these examples throw an error:
{{ cond true "true" (div 1 0) }}
{{ cond false (div 1 0) "false" }}