anhtuank7c

class Contact {
  // Constructor is marked 'const' so all fields must be final.
  final String name;
  final int age;

  // const at class level have to go along with static keyword
  static const alive = true;

  // const constructor
  const Contact(this.name, this.age);

lattner

Swift Concurrency Manifesto

Author: Chris Lattner

Chinese Translation by Jason Yu

Contents

• Introduction
• Overall Vision

emaloney

Simplified notation for avoiding the [weak self]/strongSelf dance with closures

• Proposal: TBD
• Author: Evan Maloney
• Status: Draft
• Review manager: TBD

Introduction

Frequently, closures are used as completion callbacks for asynchronous operations, such as when dealing with network requests. It is quite common to model these sorts of operations in such a way that an object instance represents a request/response transaction, for example:

kitschpatrol

    CMDeviceMotion *deviceMotion = [NSKeyedUnarchiver unarchiveObjectWithData:[[NSData alloc] initWithBase64EncodedString:
    @"YnBsaXN0MDDUAQIDBAUINzhUJHRvcFgkb2JqZWN0c1gkdmVyc2lvblkkYXJjaGl2ZXLRBgdUcm9v"
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    "TURldmljZU1vdGlvbkNvZGluZ0tleU1hZ25ldGljRmllbGRYXxAla0NNRGV2aWNlTW90aW9uQ29k"
    "aW5nS2V5Um90YXRpb25SYXRlWl8QKWtDTURldmljZU1vdGlvbkNvZGluZ0tleVVzZXJBY2NlbGVy"
    "YXRpb25aXxAja0NNRGV2aWNlTW90aW9uQ29kaW5nS2V5UXVhdGVybmlvbldfEBxrQ01Mb2dJdGVt"
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    "WF8QNWtDTURldmljZU1vdGlvbkNvZGluZ0tleU1hZ25ldGljRmllbGRDYWxpYnJhdGlvbkxldmVs"
    "XxAja0NNRGV2aWNlTW90aW9uQ29kaW5nS2V5UXVhdGVybmlvblpfECprQ01EZXZpY2VNb3Rpb25D"
    "b2RpbmdLZXlEb2luZ1lhd0NvcnJlY3Rpb25fECtrQ01EZXZpY2VNb3Rpb25Db2RpbmdLZXlEb2lu"