CPS class

Creates an Effect description that instructs the middleware to invoke fn as a Node style function.

• fn is a Node style function. i.e. a function which accepts in addition to its arguments, an additional callback to be invoked by fn when it terminates. The callback accepts two parameters, where the first parameter is used to report errors while the second is used to report successful results.

• args and namedArgs are values to be passed as arguments to fn

Notes

The middleware will perform a call fn(args:[args],namedArgs:[namedArgs], cb). The cb is a callback passed by the middleware to fn. If fn terminates normally, it must call cb(res: result) to notify the middleware of a successful result. If fn encounters some error, then it must call cb(err: error) in order to notify the middleware that an error has occurred.

The middleware remains suspended until fn terminates.

Inheritance

• Object
• Effect
• EffectWithResult
• CPS

Constructors

CPS(Function fn, {List? args, Map<Symbol, dynamic>? namedArgs, String? name, Result? result})

Creates an instance of a CPS effect.

Properties

args → List?

Arguments of the function to call

final

fn → Function

A Generator function or a normal function to call.

final

hashCode → int

The hash code for this object.

no setter, inherited

name → String?

Meta name of function

final

namedArgs → Map<Symbol, dynamic>?

Named arguments of the function to call

final

result ↔ Result?

Result after effect is resolved.

getter/setter pair, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

getDefinition() → Map<String, dynamic>

Returns all properties of effect as a dictionary object

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited