- (maybe-let*-values (claw ...) . body)syntax
- (either-let*-values (claw ...) . body)syntax
The same as maybe/either-let*, except that the first element of a two-element claw is a <formals> from lambda, and the variables mentioned in it (if any) are bound to the values that result from unpacking a Just/Right. Note that a claw with a single variable in maybe/either-let* is bound to the sole value contained in the Just/Right, whereas in maybe/either-let*-values, it is bound to a list of all the values, just as in a lambda expression, a <formals> consisting of a single variable is bound to a list of all the procedure arguments.