Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Swift - Pushing technology limits
Search
Konstantin
April 30, 2015
Programming
1
240
Swift - Pushing technology limits
Why Swift is Awesome!!!
Konstantin
April 30, 2015
Tweet
Share
More Decks by Konstantin
See All by Konstantin
How does complier see your app
konstantinkoval
4
140
Swift Package Manager
konstantinkoval
2
170
Swift rEvolution
konstantinkoval
1
230
Refactoring an Ugly Objective-C with Swift
konstantinkoval
0
230
React Native - from a mobile (iOS) developer prospective
konstantinkoval
0
68
WatchKit
konstantinkoval
0
61
Intro in WatchKit and Watch apps
konstantinkoval
0
62
Functional Swift
konstantinkoval
1
140
I love swift.pdf
konstantinkoval
1
200
Other Decks in Programming
See All in Programming
関数型まつり2025登壇資料「関数プログラミングと再帰」
taisontsukada
2
840
Go Modules: From Basics to Beyond / Go Modulesの基本とその先へ
kuro_kurorrr
0
120
「ElixirでIoT!!」のこれまでとこれから
takasehideki
0
370
事業戦略を理解してソフトウェアを設計する
masuda220
PRO
22
6.2k
第9回 情シス転職ミートアップ 株式会社IVRy(アイブリー)の紹介
ivry_presentationmaterials
1
200
KotlinConf 2025 現地で感じたServer-Side Kotlin
n_takehata
1
220
CursorはMCPを使った方が良いぞ
taigakono
0
140
「Cursor/Devin全社導入の理想と現実」のその後
saitoryc
0
110
無関心の谷
kanayannet
0
180
実践ArchUnit ~実例による検証パターンの紹介~
ogiwarat
2
280
deno-redisの紹介とJSRパッケージの運用について (toranoana.deno #21)
uki00a
0
130
AIエージェントはこう育てる - GitHub Copilot Agentとチームの共進化サイクル
koboriakira
0
180
Featured
See All Featured
Building an army of robots
kneath
306
45k
Designing for humans not robots
tammielis
253
25k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
130
19k
I Don’t Have Time: Getting Over the Fear to Launch Your Podcast
jcasabona
32
2.3k
Improving Core Web Vitals using Speculation Rules API
sergeychernyshev
16
940
StorybookのUI Testing Handbookを読んだ
zakiyama
30
5.8k
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
Designing Dashboards & Data Visualisations in Web Apps
destraynor
231
53k
GraphQLとの向き合い方2022年版
quramy
46
14k
How to train your dragon (web standard)
notwaldorf
92
6.1k
Optimising Largest Contentful Paint
csswizardry
37
3.3k
KATA
mclloyd
29
14k
Transcript
Kostiantyn Koval 1 Rocketfarm.no
Swift - Pushing technology limits
How should look Modern Language?
Clean and Clear
Programs must be written for people to read, and only
incidentally for machines to execute 1 Harold Abelson
.global _start .text _start: # write(1, message, 13) mov $1,
%rax mov $1, %rdi mov $message, %rsi mov $13, %rdx syscall message: .ascii "Hello, world\n" mov rax, 1 mov rdi, 1 mov rsi, message mov rdx, 13 syscall
None
int compare(const void * a, const void * b) {
if ( *(uint32_t*)a < *(uint32_t*)b ) { return -1; } if ( *(uint32_t*)a > *(uint32_t*)b ) { return 1; } return 0; }
!
@interface Person : NSObject @property (nonatomic) NSString* name; @property (nonatomic)
NSInteger age; @end @implementation Person - (instancetype)initWith:(NSString *)name age:(NSInteger)age { self = [super init]; if (self) return nil; _name = name; _age = age; return self; } @end @implementation TestPerson - (void)test { NSArray *people = @[ [[Person alloc] initWith:@"Sam" age:10], [[Person alloc] initWith:@"Sara" age:24], [[Person alloc] initWith:@"Ola" age:42], [[Person alloc] initWith:@"Jon" age:19]]; NSArray *kids = [people filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:@"age < 18"]]; NSMutableArray *names = [NSMutableArray new]; for (Person *person in people) { [names addObject:person.name.lowercaseString]; } } @end
!
struct Person { let name: String let age: Int }
let people = [ Person(name: "Sam", age: 10), Person(name: "Sara", age: 24), Person(name: "Ola", age: 42), Person(name: "Jon", age: 19)] let kids = people.filter { person in person.age < 18 } let names = people.map { $0.name.lowercaseString }
!
60% Less Code 13 Lines Vs 34 Lines
Less Code Less Bugs Less money
Type inference var age = 19 var name = "Sara"
var isEmpty = name.isEmpty VS var age: Int = 19 var name: String = "Sara" var isEmpty: Bool = name.isEmpty
No Semicolons ; var age = 19
Other 4 Closures 4 Default initializers 4 Default parameters 4
Subscripts 4 Operators
//Closures let numbers = [1, 2, 3, 4] numbers.map {$0
+ 10} // Subscripts let num2 = numbers[2] //Operators infix operator <<< { } func <<< (a: Vector, b: Vector) -> Vector { return Vector(x: a.x + b.x, y: a.y + b.y) }
Smart
Features Rich
Features Reach 4 Functional Programming 4 OOP 4 Generic Purpose
4 Value types 4 Tuples 4 Optionals 4 ...
Safe
Safe 4 Types 4 Type casting 4 tUpos 4 Existing
Methods 4 Correct instructions - Exception
None
Error Handling func readFromFile(file: String) -> (result: String?, error: NSError?)
{ return ("file Content", nil) } let result = readFromFile("file.txt") if result.error != nil { println("handle error") }
Optionals
Optionals 4 Represent absence of a value 4 Safe Nil
handling [NullPointerException] 4 Nil value for Value type, Int: 0, -1, NSnotFound, IntMax
'?' Type String != String? Int != Int? func person(name:
String) -> Person func person(name: String, age: Int?) -> Person person("Elvis", age: nil) person(nil, age: 27) //Error
Optionals Is a Box that could store a value inside
or could be empty You can interact with the value only throw Box API
Safe var person: Person? = people.find("Elvis") // 1 - Unwrapping
`!` if person != nil { println("found \(person!)") } //2 - Optional binding if let person = person { println("found \(person)") } else { println("found found") }
Multithreading
Multithreading 4 Immutable value type 4 explicit 'self' capturing processAsync(var
people: [Peope]) -> [Peope] { // ... Run Async people.remove(...) return people } var people: [People] //Async code processAsync(people) processAsync(people) processAsync(people)
Fast
Fast 18 Times > Objetive-C 2,9 Times > C
Let's make better mistakes tomorrow
Thanks! QA?? ! Twitter - @KostiaKoval GitHub - /KostiaKoval Kostiantyn
Koval - Rocketfarm.no