Combines this layer with the specified layer, producing a new layer that has the inputs of both layers, and the outputs of both layers.
Feeds the output services of this layer into the input of the specified layer, resulting in a new layer with the inputs of this layer, and the outputs of the specified layer.
Builds a layer into a managed value.
Feeds the error or output services of this layer into the input of either
the specified failure
or success
layers, resulting in a new layer with
the inputs of this layer, and the error or outputs of the specified layer.
Creates a fresh version of this layer that will not be shared.
Returns a new layer whose output is mapped by the specified function.
Returns a layer with its error channel mapped using the specified function.
Converts a layer that requires no services into a managed runtime, which can be used to execute effects.
Updates one of the services output by this layer.
Combines this layer with the specified layer, producing a new layer that has the inputs of both layers, and the outputs of both layers combined using the specified function.
A
ZLayer[A, E, B]
describes a layer of an application: every layer in an application requires some services (the input) and produces some services (the output).Layers can be thought of as recipes for producing bundles of services, given their dependencies (other services).
Construction of layers can be effectful and utilize resources that must be acquired and safetly released when the services are done being utilized.
By default layers are shared, meaning that if the same layer is used twice the layer will only be allocated a single time.
Because of their excellent composition properties, layers are the idiomatic way in ZIO to create services that depend on other services.