The type of the patch that describes updates to the value of the
FiberRef
.
The type of the patch that describes updates to the value of the
FiberRef
. In the simple case this will just be a function that sets the
value of the FiberRef
. In more complex cases this will describe an update
to a piece of a whole value, allowing updates to the value by different
fibers to be combined in a compositional way when those fibers are joined.
The type of the value of the FiberRef
.
Combines two patches to produce a new patch that describes the updates of the first patch and then the updates of the second patch.
Combines two patches to produce a new patch that describes the updates of
the first patch and then the updates of the second patch. The combine
operation should be associative. In addition, if the combine operation is
commutative then joining multiple fibers concurrently will result in
deterministic FiberRef
values.
Constructs a patch describing the updates to a value from an old value and a new value.
The initial patch that is applied to the value of the FiberRef
when a new
fiber is forked.
The initial value of the FiberRef
.
Applies a patch to an old value to produce a new value that is equal to the old value with the updates described by the patch.
Returns a ThreadLocal
that can be used to interact with this FiberRef
from side effecting code.
Returns a ThreadLocal
that can be used to interact with this FiberRef
from side effecting code.
This feature is meant to be used for integration with side effecting code,
that needs to access fiber specific data, like MDC contexts and the like.
The returned ThreadLocal
will be backed by this FiberRef
on all threads
that are currently managed by ZIO when this feature is enabled using
Runtime.enableCurrentFiber, and behave like an ordinary ThreadLocal
on all other threads.
Reads the value associated with the current fiber.
Reads the value associated with the current fiber. Returns initial value if
no value was set
or inherited from parent.
Atomically sets the value associated with the current fiber and returns the old value.
Atomically modifies the FiberRef
with the specified function and returns
the old value.
Atomically modifies the FiberRef
with the specified partial function and
returns the old value.
Atomically modifies the FiberRef
with the specified partial function and
returns the old value. If the function is undefined on the current value it
doesn't change it.
Gets the value associated with the current fiber and uses it to run the specified effect.
Returns a ZIO
that runs with value
bound to the current fiber.
Returns a ZIO
that runs with value
bound to the current fiber.
Guarantees that fiber data is properly restored via acquireRelease
.
Returns a scoped workflow that sets the value associated with the curent fiber to the specified value and restores it to its original value when the scope is closed.
Returns a scoped workflow that updates the value associated with the current fiber using the specified function and restores it to its original value when the scope is closed.
Returns a ZIO
that runs with f
applied to the current fiber.
Returns a ZIO
that runs with f
applied to the current fiber.
Guarantees that fiber data is properly restored via acquireRelease
.
Atomically modifies the FiberRef
with the specified function, which
computes a return value for the modification.
Atomically modifies the FiberRef
with the specified function, which
computes a return value for the modification. This is a more powerful
version of update
.
Atomically modifies the FiberRef
with the specified partial function,
which computes a return value for the modification if the function is
defined in the current value otherwise it returns a default value.
Atomically modifies the FiberRef
with the specified partial function,
which computes a return value for the modification if the function is
defined in the current value otherwise it returns a default value. This is
a more powerful version of updateSome
.
Sets the value associated with the current fiber.
Atomically modifies the FiberRef
with the specified function.
Atomically modifies the FiberRef
with the specified function and returns
the result.
Atomically modifies the FiberRef
with the specified partial function.
Atomically modifies the FiberRef
with the specified partial function. If
the function is undefined on the current value it doesn't change it.
Atomically modifies the FiberRef
with the specified partial function.
Atomically modifies the FiberRef
with the specified partial function. If
the function is undefined on the current value it returns the old value
without changing it.
A
FiberRef
is ZIO's equivalent of Java'sThreadLocal
. The value of aFiberRef
is automatically propagated to child fibers when they are forked and merged back in to the value of the parent fiber after they are joined.Here
result
will be equal to "Hi!" since changes made by a child fiber are merged back in to the value of the parent fiber on join.By default the value of the child fiber will replace the value of the parent fiber on join but you can specify your own logic for how values should be merged.
Here
value
will be 2 as the value in the joined fiber is lower and we specifiedmax
as our combining function.