danReynolds

  // Available variables:
  // - Machine
  // - interpret
  // - assign
  // - send
  // - sendParent
  // - spawn
  // - raise
  // - actions

danReynolds

Let's examine how the Apollo cache layers optimistic data, primarily from the performTransaction API:

https://github.com/apollographql/apollo-client/blob/master/src/cache/inmemory/inMemoryCache.ts#L255

When executing a transaction like writing an optimistic mutation result, it will first call `addLayer` on its optimisticData.

This will create a new layer which as it is instantiated, calls the `perform` function that was passed to it. It stores a reference to the layer that instantiated it as its parent.

Perform is called with the newly instantiated layer. It sets both the data reference and optimisticData reference equal to the new layer instance, so that any changes to data or optimisticData that occur during the transaction are set onto the new layer and not its parent and not the root entity store.

danReynolds

extension ColorExtensions on Color {
  String toHex() =>
      '#${(value & 0xFFFFFF).toRadixString(16).padLeft(6, '0').toUpperCase()}';

  bool get isDark {
    return ThemeData.estimateBrightnessForColor(this) == Brightness.dark;
  }

  Color darken([int percent = 10]) {
    assert(1 <= percent && percent <= 100);

danReynolds

import { ZodTypeAny, z } from "zod";
import {
  DeploymentOptions,
  FunctionBuilder,
  https,
} from "firebase-functions/v1";
import { assert, validate } from "./validate.js";
import Logger from "./logger.js";

const logger = new Logger("Precheck");

danReynolds

class ViewController<T> extends ComputableSubscriber<T> {
  ViewController({
    super.initialValue,
    super.broadcast,
  });

  T get model {
    return get();
  }
}

danReynolds

import 'package:flutter/material.dart';

class FState<T extends Widget> extends StatefulWidget {
  final T scoped;
  final Widget Function(T widget, void Function(VoidCallback)) Function()
      builder;

  const FState(this.scoped, this.builder, {super.key});

  @override