pcantrell

Swift Evolution proposals for the three features I covered:

• Dynamic Member Lookup
• Dynamic Callable
• Key Path Member Lookup

Here's a good (and mildly critical) overview of dynamic member lookup.

Python interop:

• Library to use Python with normal Swift
• Plotting library I used in tonight’s demo

pcantrell

import Foundation

// WHY HAVE A TIMER SYNCED TO DISPLAY REFRESH?
// 
// Sparked by this question from Nick Lockwood:
// https://twitter.com/nicklockwood/status/1131650052701786114

class TimerPhasingSimulation
    {
    // –––––– Heart of the simulation ––––––

pcantrell

Goals

• Create a standard way for devs to document what assumption led them to use an unsafe operation (e.g. force unwrap).
• Cover all trapping operations (!, try!, as!, []) through a single mechanism. (Lack of this seems to have been Lattner’s primary beef with the previous proposal.)
• Make this mechanism work as both:
  • developer documentation — clear, readable, and not excessively noisy in the code itself — and
  • runtime diagnostic, included in console / crash logs to expedite debugging.

Solution

pcantrell

1. Generalized existentials

   • Use case: implement Resource<T>, Siesta’s most obvious API design gap
   • Use case: silly dances like this

2. ✅ $0 ≠ all params

3. Fix anonymous closure argument goofiness (bug, older bug)

   • Use case: I specifically made the more-frequently used closure arg the second one here so that code referencing only it as $1 would compile (where it would not if it were $0)

pcantrell

// Siesta’s Resource class represents the current “best information available”
// about a RESTful resource. Other parts of the code can observe changes to
// that state (started loading, received new data, received error, etc):

public protocol ResourceObserver
    {
    func resourceChanged(_ resource: Resource, event: ResourceEvent)
    // (plus other stuff I’m ignoring)
    }

pcantrell

What are the Rules for dating in the work place? Flirting?

What are the clear red lines?

Where does the line between work life and social life stop and start?

What mindset causes dating and flirting to be the first thing to come to mind when many men think about women in the workplace?

What can man do to professionalize their perception of women, and keep sexual obsession out of their work relationships?

pcantrell

project_cache/Chatto/ChattoAdditions/Source/Chat Items/TextMessages/Views/TextMessageCollectionViewCellDefaultStyle.swift:            case let .template(isIncoming: isIncoming, showsTail: showsTail):
project_cache/Chatto/ChattoAdditions/Source/Chat Items/TextMessages/Views/TextMessageCollectionViewCellDefaultStyle.swift:            case let .normal(isIncoming: isIncoming, status: status, showsTail: showsTail, isSelected: isSelected):
project_cache/Lark/Sources/CodeGenerator/Generator.swift:        case let .list(itemType: itemType): hierarchy.insertEdge((.type(type.name!), .type(itemType)))
project_cache/Lark/Sources/CodeGenerator/WebServiceDescription+verify.swift:        case let .list(itemType: itemType): return [Edge(from: from, to: .type(itemType))]
project_cache/ProcedureKit/Sources/ProcedureKit/Repeat.swift:        case let .random(minimum: min, maximum: max):
project_cache/ProcedureKit/Sources/ProcedureKit/Repeat.swift:        case let .incrementing(initial: initial, increment: increment):
project_cac

pcantrell

project_cache/Chatto/Chatto/Source/ChatController/BaseChatViewController+Changes.swift:        case .preservePosition(rectForReferenceIndexPathBeforeUpdate: let oldRect, referenceIndexPathAfterUpdate: let indexPath):
project_cache/Chatto/ChattoAdditions/Source/Chat Items/TextMessages/Views/TextMessageCollectionViewCellDefaultStyle.swift:            case let .template(isIncoming: isIncoming, showsTail: showsTail):
project_cache/Chatto/ChattoAdditions/Source/Chat Items/TextMessages/Views/TextMessageCollectionViewCellDefaultStyle.swift:            case let .normal(isIncoming: isIncoming, status: status, showsTail: showsTail, isSelected: isSelected):
project_cache/GRDB.swift/GRDB/Core/Database.swift:            case .transaction(action: let action):
project_cache/GRDB.swift/GRDB/Core/Database.swift:            case .savepoint(name: let name, action: let action):
project_cache/GRDB.swift/GRDB/Core/Database.swift:        case .insert(tableName: let tableName): return tableName
project_cache/GRDB.swift/GRDB/Core/Dat

pcantrell

public protocol P {
  func foo()
}

public protocol Q: P {
}
extension Q {
  final func foo() { … }
}

pcantrell

protocol A {
  func foo()
}
extension A {
  default func foo() { … }   // Dynamically dispatched b/c it’s in the protocol
  func bar() { … }           // Statically dispatched b/c it’s not in the protocol
}

// Dynamic shadows static