THE VALUE IN TREESDREW MCCORMACK

SKETCH

PROBLEMS

▸ Edits during saves

▸ Edits during rendering

▸ Fragile undo

SNAPSHOTTime

1.02.0

VALUE TYPES

PROS

▸ Stack memory

▸ No reference counting

▸ Safe between threads

▸ No changes behind your back

struct Document {

var sections: [Section]

}

struct Section {

var paragraphs: [Paragraph]

}

struct Paragraph {

var style: ParagraphStyle

var content: String

}

class ViewController {

var document: Document {

didSet {

self.reloadViews()

}

}

}

let c = ViewController()

c.document.sections[0].paragraphs[0].style = ...

1.02.0

CAN I HAVE A VALUE STORE FOR XMAS?

…AND CAN I HAVE IT SYNC?

DISTRIBUTED VALUE STORE (DVS)

DISTRIBUTED VALUE STORE (DVS)

Repository

DISTRIBUTED VALUE STORE (DVS)

struct Person { var name = "Bob" var age = 32 var tags = ["clean", "smart"] }

DISTRIBUTED VALUE STORE (DVS)

struct Person { var name = "Bob" var age = 32 var tags = ["clean", "smart"] }

CloudKit Repository

DISTRIBUTED VALUE STORE (DVS)

struct Person { var name = "Bob" var age = 32 var tags = ["clean", "smart"] }

github.com/mentalfaculty/impeller

import Impeller

struct Person: Storable {

static let storedType = "Person"

var metadata = Metadata()

var name = "No Name"

var age: Int? = nil

...

init?(readingFrom repository:ReadRepository) {

name = repository.read("name")!

age = repository.read(optionalFor:"age")!

}

func write(in repository:WriteRepository) {

repository.write(name, for: "name")

repository.write(age, for: "age")

}

ATTRIBUTION

IMAGES▸ Sketch Logo

▸ https://www.sketchappsources.com/free-source/2332-new-sketch-vector-icon.html

▸ Bamboo Forest

▸ https://www.pexels.com/photo/nature-forest-trees-bamboo-5091/

▸ Redwood Forest

▸ https://commons.wikimedia.org/wiki/File:Sequoia_sempervirens_Big_Basin_Redwoods_State_Park_4.jpg

▸ Notes

▸ http://www.cooperazionetrentina.it/Giovani/Iniziative/Iniziative-2015/I-giovani-e-la-cooperazione-che-cambia-7-edizione

▸ Crop Circles

▸ https://commons.wikimedia.org/wiki/File:CropCircleW.jpg

▸ iPhone

▸ https://commons.wikimedia.org/wiki/File:IPhone_with_icons.svg

▸ Database Icon

▸ https://pixabay.com/en/database-diagram-data-storage-disk-29954/

▸ Jedward

▸ https://www.flickr.com/photos/chiropractic/6849052778

▸ No cycling

▸ https://commons.wikimedia.org/wiki/File:Uruguay_Road_Sign_Bicycles_Only.svg

▸ Planting

▸ https://www.flickr.com/photos/usfsregion5/3598029211