Evaluates the `choice`

argument at the given `index`

and returns the result.

**choose**( *index*, *choice1*, *choice2*, … )

*index*: (Integer) The one-based index that selects which choice argument to evaluate and return.

*choice1*: (Any Type) The first of n possible choices, where n must be >= 1. Only the selected value is evaluated.

Any Type

The `index`

parameter must be a scalar number between 1 and the number of choices. It cannot be null.

If the selected choice evaluates to null, `null`

will be returned.

Unlike most functions, choose does not evaluate all its arguments. First the index is evaluated, then the selected value arguments. The unchosen arguments are not evaluated. Use `choose`

to avoid calling potentially costly expressions whose results would be discarded.

You can experiment with this function in the test box below.

Test Input

Use expressions as the `choice`

arguments or as the `index`

argument.

`choose(2,2+2,4/2,3^2)`

returns `2`

`choose(weekday(today()),"Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday")`

returns the name of the day of the week

It can be useful to use the `wherecontains`

function in conjunction with `choose`

. Since `wherecontains`

returns a list, use the first result for the `index`

parameter.

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choose(
wherecontains(ri!rating, {"Poor","Satisfactory","Excellent"})[1],
mod(rand() * 10, 5),
mod(rand() * 10, 5) + 4,
10 - mod(rand() * 10, 2)
)

See also: wherecontains()

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