derrh

Imagining what the future might be like with direct support for GraphQL in SwiftUI.

Rationale

SwiftUI and GraphQL both represent new paradigms, these new paradigms—when paired together—offer an unparalleled, streamlined, client development experience. Today the most widely used and robust Swift GraphQL clients lack direct SwiftUI support, as well as support for #8 and #9 of Jordan Eldridge's "GraphQL Maturity Model".

Goals

• Each View declares it's data requirements using Fragments
• Each View observes it's fragment data from the GraphQL normalized cache, limiting large-tree re-renders
• Sensible defaults for cache policies and other configuration cover most cases, but can be overridden in intuitive ways
• As Views are decomposed into subviews, queries are decomposed into fragments

derrh

type RouteLeaf = string | number | bigint | boolean | null | undefined
// there's probably a tidier way to get around TS's lack of support for recursive `type`'s
type RouteBranch<SubBranch = RouteLeaf> = Record<string | number | symbol, RouteLeaf | SubBranch>
type RouteComponent = 
    | RouteLeaf
    | RouteBranch<RouteBranch>
    | RouteBranch<RouteBranch<RouteBranch>>
    | RouteBranch<RouteBranch<RouteBranch<RouteBranch>>>
    | RouteBranch<RouteBranch<RouteBranch<RouteBranch<RouteBranch>>>>

derrh

import React from 'react';
import { Orientation } from 'react-native-device-orientation';


// Orientation.addSubscriber(callback: (orientation: 'portrait' | 'landscape') => {})
// Orientation.removeSubscriber(callback)

derrh

func format(date: Date) -> String { ... }

let dueDate = Date?

print("""
Assignment
--
due: \(dueDate.map(format(date:)) ?? "none")
"""

derrh

protocol Thing {
    func foo()
}

extension Thing {
    func foo() {
        print("just a thing")
    }
}

derrh

Process:               carthage [25835]
Path:                  /usr/local/bin/carthage
Identifier:            carthage
Version:               0
Code Type:             X86-64 (Native)
Parent Process:        bash [21316]
Responsible:           Terminal [21310]
User ID:               1745180192

Date/Time:             2015-05-26 10:54:31.718 -0600

derrh

//
//  NSManagedObjectContext+Project.swift
//
//  Created by Derrick Hathaway on 2/22/15.
//  Copyright (c) 2015 The Best Bits LLC.
//
// Permission is hereby granted, free of charge, to any person
// obtaining a copy of this software and associated documentation
// files (the "Software"), to deal in the Software without
// restriction, including without limitation the rights to use,

derrh

import UIKit


func +<A,B>(lhs: [A:B], rhs: [A:B]) -> [A:B] {
    var dict : [A:B] = [:]
    for (key, value) in lhs {
        dict[key] = value
    }
    for (key, value) in rhs {
        dict[key] = value

derrh

#import <objc/runtime.h>
 
#define SYNTHESIZE(class, getter, setter) \
static const void *getter##PropertyKey = &getter##PropertyKey;\
- (type *)getter { \
    return objc_getAssociatedObject(self, getter##PropertyKey); \
} \
\
- (void)setter:(class *object) { \
    objc_setAssociatedObject(self, getter##PropertyKey, object, OBJC_ASSOCIATION_RETAIN);\

derrh

// boolean_variety.h
// 
// Copyright (c) 2013 Derrick Hathaway
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions: