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ReactiveProxyVariableBuilder.md

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🧩 ReactiveInlineVariable.Builder

Fluent builder for creating ReactiveInlineVariable instances. Allows constructing reactive proxy variables by specifying getter, setter, subscribe, and unsubscribe handlers in a chainable and readable way.

📑 Table of Contents

🗂 Example of Usage

// Using the builder to create a ReactiveInlineVariable
var reactiveProxy = ReactiveInlineVariable<int>
    .StartBuild()
    .WithGetter(() => someValue)
    .WithSetter(value => someValue = value)
    .WithSubscribe(handler => subscribeAction(handler))
    .WithUnsubscribe(handler => unsubscribeAction(handler))
    .Build();

🔍 API Reference

🏛️ Type 

public struct Builder
  • Description: Fluent builder for constructing ReactiveInlineVariable<T> instances.
  • See also: ReactiveInlineVariable

🏹 Methods

WithGetter(Func<T>) 

public Builder WithGetter(Func<T> getter)
  • Description: Assigns the getter function for the reactive proxy variable.
  • Parameter: getter – Function to retrieve the current value.
  • Returns: The same builder instance for chaining.
  • Throws: ArgumentNullException if getter is null.

WithSetter(Action<T>) 

public Builder WithSetter(Action<T> setter)
  • Description: Assigns the setter action for the reactive proxy variable.
  • Parameter: setter – Action to update the value.
  • Returns: The same builder instance for chaining.
  • Throws: ArgumentNullException if setter is null.

WithSubscribe(Action<Action<T>>) 

public Builder WithSubscribe(Action<Action<T>> subscribe)
  • Description: Assigns the subscription handler for value changes.
  • Parameter: subscribe – Action to handle subscription callbacks.
  • Returns: The same builder instance for chaining.
  • Throws: ArgumentNullException if subscribe is null.

WithUnsubscribe(Action<Action<T>>) 

public Builder WithUnsubscribe(Action<Action<T>> unsubscribe)
  • Description: Assigns the unsubscription handler.
  • Parameter: unsubscribe – Action to handle unsubscription callbacks.
  • Returns: The same builder instance for chaining.
  • Throws: ArgumentNullException if unsubscribe is null.

Build() 

public ReactiveInlineVariable<T> Build()
  • Description: Constructs and returns a new ReactiveInlineVariable<T> instance with the provided getter, setter, subscribe, and unsubscribe handlers.
  • Returns: A new ReactiveInlineVariable<T> instance.
  • Throws: InvalidOperationException if any of the required handlers (getter, setter, subscribe, unsubscribe) were not provided.

📝 Notes

  • Ensures that all necessary handlers are assigned before creating the reactive proxy.
  • Supports fluent syntax for concise and readable code.
  • Useful for integrating external properties or third-party systems into reactive architectures without duplicating state.