Reference

Control

If-else

Input	One conditional argument (a) and two arguments of any type (b and c). The conditional argument must evaluate to a boolean. The other two arguments must evaluate to the same type.
Output	If the condition is true, it returns the first argument. Otherwise it returns the second argument.

Try-catch

Input	Two arguments, which must evaluate to the same type.
Output	It returns the first argument unless it evaluates to an error, in which case, it returns the second argument.