chickadee » nondeterminism » local-string-set!

(local-set! obj val)syntax
local-set-car! x yprocedure
local-set-cdr! x yprocedure
local-string-set! s i xprocedure
local-vector-set! v i xprocedure

Perform operations with side-effects that will be undone when backtracking.