Layer<E, Service> class

A Layer can be used to construct a service.

It will only be built once per ZIO execution, or it can be provided to a Runtime using Runtime.provideLayer.

If it is provided to a Runtime, it will be built once per Runtime - being reused for all ZIO executions.

It can be accessed using access or accessWith. Or by calling ZIO.layer.

You can also replace a Layer using Layer.replace.

Constructors

Layer(EIO<E, Service> make)

A Layer constructs a service, and is only built once per ZIO execution.

factory

Layer.scoped(ZIO<Scope<NoEnv>, E, Service> make)

A Layer that has scoped resources.

factory

Properties

access → EIO<E, Service>

no setter

atom → FutureAtom<Service>

late, final

atomSyncOnly → ReadOnlyAtom<Service>

late, final

build → ZIO<Scope<NoEnv>, E, Service>

no setter

buildContext → EIO<E, LayerContext>

no setter

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

tag → Symbol

final

Methods

accessWith<A>(A f(Service _)) → EIO<E, A>

accessWithZIO<R, A>(ZIO<R, E, A> f(Service _)) → ZIO<R, E, A>

mapError<E2>(E2 f(E _)) → Layer<E2, Service>

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

provideLayer(Layer<E, dynamic> layer) → Layer<E, Service>

replace<E2>(EIO<E2, Service> build) → Layer<E2, Service>

replaceScoped<E2>(ZIO<Scope<NoEnv>, E2, Service> build) → Layer<E2, Service>

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited