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:

tempire

// FAILURE
var array = [["name": "glen"]]
for item in array {
  item["rank"] = "advanced" // Generates an @lvalue error
}

// Even though array is immutable, it's of type <Array<Dictionary<String,String>>,
// item is assigned by let automatically.