when-let* (bindings &body forms)
Creates new variable bindings, and conditionally executes forms.
bindings must be either single binding of the form:
(variable initial-form)or a list of bindings of the form:
((variable-1 initial-form-1) (variable-2 initial-form-2) ... (variable-n initial-form-n))Each initial-form is executed in turn, and the variable bound to the corresponding value. Initial-form expressions can refer to variables previously bound by the when-let*.
Execution of when-let* stops immediately if any initial-form evaluates to nil. If all initial-forms evaluate to true, then forms are evaluated as an implicit progn.