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update

concur.atomic.update

(F 
type
: Unary T T, compute_new F)
 => 
tuple T T
use `compute_new` to compute a new value of the atomic
do this until a compare_and_set is successful.

returns the (old_value, new_value)

Type Parameters

0.099dev (GIT hash a68bce9af280552faedee34cd5433dc10b6454de)
last changed: 2026-10-14