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Some improvements and new playgorunds
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...ground-iOS.playground/Pages/UITableView+ObservableArray2D.xcplaygroundpage/Contents.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,56 @@ | ||
| //: [Previous](@previous) | ||
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| import Foundation | ||
| import PlaygroundSupport | ||
| import UIKit | ||
| import Bond | ||
| import ReactiveKit | ||
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| let tableView = UITableView() | ||
| tableView.frame.size = CGSize(width: 300, height: 600) | ||
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| // Note: Open the assistant editor to see the table view | ||
| PlaygroundPage.current.liveView = tableView | ||
| PlaygroundPage.current.needsIndefiniteExecution = true | ||
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| // Using custom binder to provide table view header titles | ||
| class CustomBinder<Changeset: SectionedDataSourceChangeset>: TableViewBinderDataSource<Changeset> where Changeset.Collection == Array2D<String, Int> { | ||
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| @objc func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? { | ||
| return changeset?.collection[sectionAt: section] | ||
| } | ||
| } | ||
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| // Array2D is generic over section metadata `Section` and item value `Item`. | ||
| // Section metadata is the data associated with the section, like section header titles. | ||
| // You can specialise `Section` to `Void` if there is no section metadata. | ||
| // Item values are values displayed by the table view cells. | ||
| let initialData = Array2D<String, Int>(sectionsWithItems: [ | ||
| ("A", [1, 2]), | ||
| ("B", [10, 20]) | ||
| ]) | ||
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| let data = MutableObservableArray2D(initialData) | ||
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| data.bind(to: tableView, cellType: UITableViewCell.self, using: CustomBinder()) { (cell, item) in | ||
| cell.textLabel?.text = "\(item)" | ||
| } | ||
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| DispatchQueue.main.asyncAfter(deadline: .now() + 1) { | ||
| data.appendItem(3, toSectionAt: 0) | ||
| } | ||
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| DispatchQueue.main.asyncAfter(deadline: .now() + 2) { | ||
| data.batchUpdate { (data) in | ||
| data.appendItem(4, toSectionAt: 0) | ||
| data.insert(section: "Aa", at: 1) | ||
| data.appendItem(100, toSectionAt: 1) | ||
| data.insert(item: 50, at: IndexPath(item: 0, section: 1)) | ||
| } | ||
| } | ||
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| DispatchQueue.main.asyncAfter(deadline: .now() + 3) { | ||
| data.moveItem(from: IndexPath(item: 0, section: 1), to: IndexPath(item: 0, section: 0)) | ||
| } | ||
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| //: [Next](@next) |
34 changes: 34 additions & 0 deletions
34
Playground-iOS.playground/Pages/UITableView+Signal+Diff.xcplaygroundpage/Contents.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,34 @@ | ||
| //: [Previous](@previous) | ||
|
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| import Foundation | ||
| import PlaygroundSupport | ||
| import UIKit | ||
| import Bond | ||
| import ReactiveKit | ||
|
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| let tableView = UITableView() | ||
| tableView.frame.size = CGSize(width: 300, height: 300) | ||
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| // Note: Open the assistant editor to see the table view | ||
| PlaygroundPage.current.liveView = tableView | ||
| PlaygroundPage.current.needsIndefiniteExecution = true | ||
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| // A signal that emits a value every 1 second | ||
| let pulse = SafeSignal<Int>.interval(1) | ||
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| // A signal of [String] | ||
| let data = SafeSignal | ||
| .sequence([ | ||
| ["A"], | ||
| ["A", "B", "C"], | ||
| ["A", "C"], | ||
| ["C", "A"] | ||
| ]) | ||
| .zip(with: pulse) { data, _ in data } // add 1 second delay between events | ||
| .diff() // diff each new array against the previous one | ||
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| data.bind(to: tableView, cellType: UITableViewCell.self) { (cell, string) in | ||
| cell.textLabel?.text = string | ||
| } | ||
|
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| //: [Next](@next) |
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