# Conditionals

Conditionals help evaluate an expression to return one of the two specified return expressions.

| Variable | Access Via $ | Brief Description                                                                                                                                                              |
| -------- | ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| cond     | `$cond`      | Takes an array of 3 expressions. If the first expression evaluates to true, the second expression value is returned. Otherwise, the value of the third expression is returned. |
| ifNull   | `$ifNull`    | Takes an array of 2 expressions. Returns the value of the first expression unless it evaluates to null, in which case the value of the second expression is returned.          |