zio.stm.TRef
See theTRef companion object
A TRef
is a purely functional description of a mutable reference that can
be modified as part of a transactional effect. The fundamental operations of
a TRef
are set
and get
. set
transactionally sets the reference to a
new value. get
gets the current value of the reference.
NOTE: While TRef
provides the transactional equivalent of a mutable
reference, the value inside the TRef
should be immutable. For performance
reasons TRef
is implemented in terms of compare and swap operations rather
than synchronization. These operations are not safe for mutable values that
do not support concurrent access.