Context25

Constructors

emptyconstReturns an empty Context.makeconstCreates a new Context with a single service associated to the key.makeUnsafeconstCreates a Context from an existing service map.

Models

ContextinterfaceImmutable collection of service implementations used for dependency injection in Effect programs.KeyinterfaceTyped identifier for a service stored in a Context.ReferenceinterfaceService key with a lazily computed default value.ServiceinterfaceContext key with helper methods for working with a service.ServiceClassinterfaceClass-style service key produced by Context.Service<Self, Shape>()("Id").

Type Ids

ServiceTypeIdtypeString literal type used as the runtime type identifier for Context service keys.

Guards

isContextconstChecks whether the provided argument is a Context.isKeyconstChecks whether the provided argument is a Key.isReferenceconstChecks whether the provided argument is a Reference.

Getters

getconstGets a service from the context that corresponds to the given key.getOptionconstGets the service for a key safely wrapped in an Option.getOrElseconstGets the service for a key, or evaluates the fallback when a non-reference key is absent.getOrUndefinedconstReturns the service currently stored for a key, or undefined when the key is absent.

Filtering

omitconstReturns a new Context with the specified service keys removed.pickconstReturns a new Context that contains only the specified services.

Mutations

mutateconstPerforms a series of mutations on a Context.

Adders

addconstAdds a service to a given Context.addOrOmitconstAdds or removes a service depending on an Option.

Combining

mergeconstMerges two Contexts into one.mergeAllconstMerges any number of Contexts into one.

Unsafe

getReferenceUnsafeconstGets the value for a Context.Reference, returning its cached default when the context does not contain an override.getUnsafeconstGets the service for a key, throwing if an absent non-reference key cannot be resolved.