Skip to content

Instantly share code, notes, and snippets.

@chriseidhof
chriseidhof / TypedExpr.swift
Last active February 3, 2018 23:01
Typed Expressions in Swift
// Variables just contain an integer. We can have a maximum of `Int.max` variables in our program. ¯\_(ツ)_/¯
private struct Var {
static var freshVarIx = 0
let ix: Int
init() {
Var.freshVarIx+=1
ix = Var.freshVarIx
}
}
@bishboria
bishboria / springer-free-maths-books.md
Last active April 25, 2024 06:27
Springer made a bunch of books available for free, these were the direct links
@oleganza
oleganza / async_swift_proposal.md
Last active May 12, 2023 10:06
Concrete proposal for async semantics in Swift

Async semantics proposal for Swift

Modern Cocoa development involves a lot of asynchronous programming using blocks and NSOperations. A lot of APIs are exposing blocks and they are more natural to write a lot of logic, so we'll only focus on block-based APIs.

Block-based APIs are hard to use when number of operations grows and dependencies between them become more complicated. In this paper I introduce asynchronous semantics and Promise type to Swift language (borrowing ideas from design of throw-try-catch and optionals). Functions can opt-in to become async, programmer can compose complex logic involving asynchronous operations while compiler produces necessary closures to implement that logic. This proposal does not propose new runtime model, nor "actors" or "coroutines".

Table of contents

@zachwaugh
zachwaugh / switch-shortcut.swift
Last active February 6, 2023 16:15
Swift shortcut for returning and/or assigning the result of switch statement?
// Can currently do this
func titleForSection1(section: Int) -> String? {
switch section {
case 0: return "Foo"
case 1: return "Bar"
default: return nil
}
}
// But I want to do this to remove the redundant returns
@mattt
mattt / uiappearance-selector.md
Last active March 19, 2024 12:52
A list of methods and properties conforming to `UIAppearance` as of iOS 12 Beta 3

Generate the list yourself:

$ cd /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS*.sdk/System/Library/Frameworks/UIKit.framework/Headers
$ grep UI_APPEARANCE_SELECTOR ./*     | \
  sed 's/NS_AVAILABLE_IOS(.*)//g'     | \
  sed 's/NS_DEPRECATED_IOS(.*)//g'    | \
  sed 's/API_AVAILABLE(.*)//g'        | \
  sed 's/API_UNAVAILABLE(.*)//g'      | \
 sed 's/UI_APPEARANCE_SELECTOR//g' | \