Context<R> class
A collection that holds contextual data (services/dependencies) required by effects.
Context uses a type-safe approach where services are identified by their type.
Properties
- hashCode → int
-
The hash code for this object.
no setteroverride
- isEmpty → bool
-
Returns true if this context is empty
no setter
- isNotEmpty → bool
-
Returns true if this context is not empty
no setter
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
serviceTypes
→ Iterable<
Type> -
Returns all service types in this context
no setter
- size → int
-
Returns the number of services in this context
no setter
Methods
-
add<
T extends Object> (T service) → Context< R> - Adds a service to this context, returning a new context
-
get<
T extends Object> () → T - Gets a service from this context by its type
-
has<
T extends Object> () → bool - Checks if a service of the given type exists in this context
-
merge(
Context other) → Context< R> -
Combines this context with another context
Services from
otherwill override services of the same type in this context -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
override