# SOME

### Description

With `SOME`, you evaluate if any value in the list is true.

### Simple Examples

```
SOME([true, true, false])
```

This evaluates to true, since one of the values in the list is true.

### Example with properties

```
SOME(
    get_properties(
        instances(Person), 'is_onboarded'
    )
)
```

In this example, we go over all the people in the current case and retrieve their value `'is_onboarded'`. If any of these values are true, the whole expression is true. Thus, this evaluates to true if anybody in the case has already been onboarded.

### How to check of other things than true

To check if there is anything else in the list, just first use a map to change the elements in the list to what you want to check for:

```
SOME(MAP(['high', 'high', 'medium'], CURRENT = 'high'))
```

This checks if any element in the list is "high".

### Empty lists

`SOME([])` evaluates to `false`. When there are no elements to check, the condition "some element satisfies the property" is vacuously false: there is nothing there that could make it true. Put differently, `false` is the identity for logical OR: starting from `false` and folding with OR over zero elements leaves the result at `false`.

This means a check like `SOME(get_properties(instances(Person), 'is_onboarded'))` returns `false` when there are no `Person` instances in the case.


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