Swift impact and status on Exercism

Create the Swift syllabus

Help create the track syllabus: is a set of concepts and learning exercises put together to teach foundational elements of the programming language.

Next goal: Create a complete syllabus with at least 50 concepts. Find out more.

Usage statistics

41 concepts being taught

Ca

Capturing

158 learnt

Cl

Closures

158 learnt

Sh

Shorthand arguments

158 learnt

Tr

Trailing closures

158 learnt

Ch

Characters

986 learnt

Nu

Numbers

992 learnt

Di

Dictionaries

232 learnt

Ba

Basics

2,142 learnt

Co

Constants

2,142 learnt

Fu

Functions

2,142 learnt

Ty

Type Annotations

2,142 learnt

Va

Variables

2,142 learnt

De

Default Parameters

318 learnt

Fu

Function Overloading

318 learnt

In

Inout Parameters

318 learnt

Mu

Multiple Return Values

318 learnt

Ne

Nested Functions

318 learnt

Va

Variadic Parameters

318 learnt

En

Enumerations

145 learnt

Co

Contro transfer

210 learnt

fo

for loops

210 learnt

Lo

Loops

210 learnt

re

repeat while

210 learnt

wh

while loops

210 learnt

Ar

Arrays

457 learnt

Op

Optionals

318 learnt

Im

Importing

209 learnt

St

String Components

209 learnt

St

String Indexing

209 learnt

Tu

Tuples

396 learnt

Es

Escaping functions

584 learnt

Hi

Higher Order Functions

584 learnt

Bo

Booleans

714 learnt

Co

Conditionals Guard

714 learnt

Co

Conditionals If

714 learnt

Co

Conditionals Switch

714 learnt

Te

Ternary operator

714 learnt

Me

Methods

169 learnt

Se

Self

169 learnt

St

Structs And Classes

169 learnt

Va

Value and reference types

169 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Double-Null0111: Closures Are Forever

188

1,015 (avg. 5.4)

158 (84.0%)

7 (3.7%)

Cal's Custom Sign Shop

1,193

9,911 (avg. 8.3)

986 (82.6%)

5 (0.4%)

Freelancer Rates

1,432

18,012 (avg. 12.6)

992 (69.3%)

12 (0.8%)

High Score Board

251

1,240 (avg. 4.9)

232 (92.4%)

2 (0.8%)

Layers of Lasagna

3,270

18,971 (avg. 5.8)

2,142 (65.5%)

18 (0.6%)

Lasagna Master

341

2,469 (avg. 7.2)

318 (93.3%)

8 (2.3%)

Log Lines

150

491 (avg. 3.3)

145 (96.7%)

2 (1.3%)

Master Mixologist

237

2,114 (avg. 8.9)

210 (88.6%)

5 (2.1%)

Magician-in-Training

543

7,348 (avg. 13.5)

457 (84.2%)

11 (2.0%)

Slice Sizing

351

3,880 (avg. 11.1)

318 (90.6%)

11 (3.1%)

The 1st Rule of Poetry Club

244

1,927 (avg. 7.9)

209 (85.7%)

2 (0.8%)

Santa's Swifty Helper

411

1,360 (avg. 3.3)

396 (96.4%)

4 (1.0%)

Secret Agent Double-Null0111

726

3,272 (avg. 4.5)

584 (80.4%)

8 (1.1%)

Vexing Vehicle Purchase

1,017

10,430 (avg. 10.3)

714 (70.2%)

14 (1.4%)

Windowing System

193

1,601 (avg. 8.3)

169 (87.6%)

4 (2.1%)

Build Test Runners

Learn More

Create Test Runners that have the single responsibility of taking a solution, running all tests and returning a standardized output.

Next goal: Get Test Runners to Version 3. Swift is currently utilising a Version 2 Test Runner. Find out more.

Usage statistics

Total Test Runner Runs

128,088

Test Run Pass Rate

19.1% (24517)

Test Run Fail Rate

19.4% (24902)

Test Run Error Rate

61.4% (78669)

Build Analyzers

Learn More

Build an Analyzer for Swift: Exercism's analyzers automatically assess student's submissions and provide mentor-style commentary.

Next goal: Build an Analyzer. Find out more.

Build Representers

Learn More

Build a Representer: a bit of code that has the single responsibility of taking a solution and returning a normalized representation of it.

Next goal: Build a Representer. Find out more.

Create Practice Exercises

Learn More

Practice Exercises are exercises designed to allow students to solve an arbitrary problem, with the aim of them making use of the concepts they have learned so far.

Next goal: Implement 130 practice exercises. Find out more.

Usage statistics

83 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

9,767

20,661 (avg. 2.1)

7,229 (74.0%)

16 (0.2%)

Difference of Squares

1,535

4,196 (avg. 2.7)

1,082 (70.5%)

210 (13.7%)

Gigasecond

1,632

2,728 (avg. 1.7)

1,105 (67.7%)

271 (16.6%)

Leap

2,547

4,415 (avg. 1.7)

2,169 (85.2%)

574 (22.5%)

RNA Transcription

1,023

2,063 (avg. 2.0)

836 (81.7%)

146 (14.3%)

Space Age

765

1,196 (avg. 1.6)

669 (87.5%)

90 (11.8%)

Sum of Multiples

863

1,789 (avg. 2.1)

730 (84.6%)

113 (13.1%)

Two Fer

2,094

3,114 (avg. 1.5)

1,644 (78.5%)

920 (43.9%)

Accumulate

753

1,166 (avg. 1.5)

546 (72.5%)

39 (5.2%)

Bob

765

1,743 (avg. 2.3)

658 (86.0%)

83 (10.8%)

ETL

593

869 (avg. 1.5)

528 (89.0%)

18 (3.0%)

Grade School

559

1,034 (avg. 1.8)

468 (83.7%)

21 (3.8%)

Grains

537

1,155 (avg. 2.2)

466 (86.8%)

59 (11.0%)

Hamming

721

1,281 (avg. 1.8)

680 (94.3%)

71 (9.8%)

Isogram

441

777 (avg. 1.8)

371 (84.1%)

14 (3.2%)

List Ops

317

572 (avg. 1.8)

218 (68.8%)

10 (3.2%)

Nucleotide Count

919

1,416 (avg. 1.5)

679 (73.9%)

61 (6.6%)

Raindrops

612

947 (avg. 1.5)

519 (84.8%)

28 (4.6%)

Binary Search

244

449 (avg. 1.8)

192 (78.7%)

1 (0.4%)

Circular Buffer

165

481 (avg. 2.9)

123 (74.5%)

3 (1.8%)

Clock

361

597 (avg. 1.7)

286 (79.2%)

10 (2.8%)

Collatz Conjecture

178

291 (avg. 1.6)

147 (82.6%)

2 (1.1%)

Diamond

176

275 (avg. 1.6)

129 (73.3%)

0 (0.0%)

Flatten Array

217

457 (avg. 2.1)

168 (77.4%)

6 (2.8%)

ISBN Verifier

172

350 (avg. 2.0)

131 (76.2%)

4 (2.3%)

Kindergarten Garden

253

338 (avg. 1.3)

203 (80.2%)

3 (1.2%)

Perfect Numbers

258

432 (avg. 1.7)

224 (86.8%)

7 (2.7%)

Phone Number

325

646 (avg. 2.0)

278 (85.5%)

10 (3.1%)

Protein Translation

160

395 (avg. 2.5)

116 (72.5%)

1 (0.6%)

Proverb

128

225 (avg. 1.8)

97 (75.8%)

1 (0.8%)

Queen Attack

239

400 (avg. 1.7)

203 (84.9%)

4 (1.7%)

Robot Name

379

586 (avg. 1.5)

315 (83.1%)

5 (1.3%)

Robot Simulator

226

341 (avg. 1.5)

175 (77.4%)

8 (3.5%)

Scale Generator

121

187 (avg. 1.5)

65 (53.7%)

0 (0.0%)

Scrabble Score

329

646 (avg. 2.0)

281 (85.4%)

4 (1.2%)

Secret Handshake

186

232 (avg. 1.2)

148 (79.6%)

0 (0.0%)

Sieve

231

350 (avg. 1.5)

195 (84.4%)

1 (0.4%)

Strain

242

329 (avg. 1.4)

204 (84.3%)

2 (0.8%)

Sublist

188

332 (avg. 1.8)

138 (73.4%)

1 (0.5%)

Triangle

358

602 (avg. 1.7)

311 (86.9%)

6 (1.7%)

Acronym

207

540 (avg. 2.6)

133 (64.3%)

5 (2.4%)

All Your Base

140

230 (avg. 1.6)

97 (69.3%)

0 (0.0%)

Allergies

273

385 (avg. 1.4)

205 (75.1%)

4 (1.5%)

Anagram

307

568 (avg. 1.9)

261 (85.0%)

9 (2.9%)

Beer Song

173

225 (avg. 1.3)

125 (72.3%)

1 (0.6%)

House

108

118 (avg. 1.1)

74 (68.5%)

1 (0.9%)

Largest Series Product

121

376 (avg. 3.1)

86 (71.1%)

3 (2.5%)

Matrix

157

288 (avg. 1.8)

113 (72.0%)

0 (0.0%)

Meetup

150

213 (avg. 1.4)

100 (66.7%)

1 (0.7%)

Pangram

125

226 (avg. 1.8)

94 (75.2%)

2 (1.6%)

Pascal's Triangle

119

152 (avg. 1.3)

77 (64.7%)

1 (0.8%)

Prime Factors

125

145 (avg. 1.2)

89 (71.2%)

0 (0.0%)

Pythagorean Triplet

126

220 (avg. 1.7)

81 (64.3%)

0 (0.0%)

Rotational Cipher

86

168 (avg. 2.0)

52 (60.5%)

1 (1.2%)

Saddle Points

100

234 (avg. 2.3)

72 (72.0%)

1 (1.0%)

Say

62

98 (avg. 1.6)

30 (48.4%)

1 (1.6%)

Series

164

327 (avg. 2.0)

115 (70.1%)

0 (0.0%)

Simple Linked List

153

225 (avg. 1.5)

105 (68.6%)

0 (0.0%)

Twelve Days

192

229 (avg. 1.2)

142 (74.0%)

1 (0.5%)

Word Count

478

639 (avg. 1.3)

383 (80.1%)

11 (2.3%)

Atbash Cipher

81

181 (avg. 2.2)

61 (75.3%)

1 (1.2%)

Binary Search Tree

118

512 (avg. 4.3)

77 (65.3%)

1 (0.8%)

Crypto Square

83

275 (avg. 3.3)

57 (68.7%)

0 (0.0%)

Custom Set

89

187 (avg. 2.1)

55 (61.8%)

1 (1.1%)

Food Chain

63

80 (avg. 1.3)

38 (60.3%)

0 (0.0%)

Linked List

104

219 (avg. 2.1)

70 (67.3%)

5 (4.8%)

Luhn

92

177 (avg. 1.9)

64 (69.6%)

3 (3.3%)

OCR Numbers

69

119 (avg. 1.7)

41 (59.4%)

2 (2.9%)

Roman Numerals

114

184 (avg. 1.6)

80 (70.2%)

2 (1.8%)

Run-Length Encoding

81

128 (avg. 1.6)

52 (64.2%)

0 (0.0%)

Simple Cipher

73

123 (avg. 1.7)

45 (61.6%)

0 (0.0%)

Bowling

73

138 (avg. 1.9)

36 (49.3%)

0 (0.0%)

Complex Numbers

54

74 (avg. 1.4)

30 (55.6%)

0 (0.0%)

Nth Prime

97

188 (avg. 1.9)

65 (67.0%)

1 (1.0%)

Palindrome Products

63

132 (avg. 2.1)

43 (68.3%)

0 (0.0%)

Pig Latin

70

140 (avg. 2.0)

43 (61.4%)

0 (0.0%)

Tournament

69

145 (avg. 2.1)

49 (71.0%)

1 (1.4%)

Transpose

63

79 (avg. 1.3)

35 (55.6%)

0 (0.0%)

Matching Brackets

82

145 (avg. 1.8)

59 (72.0%)

1 (1.2%)

Dominoes

67

92 (avg. 1.4)

35 (52.2%)

0 (0.0%)

Minesweeper

77

125 (avg. 1.6)

41 (53.2%)

1 (1.3%)

Wordy

87

218 (avg. 2.5)

54 (62.1%)

1 (1.1%)

Poker

178

174 (avg. 1.0)

41 (23.0%)

0 (0.0%)

4 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Binary

23

35 (avg. 1.5)

23 (100.0%)

0 (0.0%)

Hexadecimal

6

6 (avg. 1.0)

6 (100.0%)

0 (0.0%)

Octal

14

18 (avg. 1.3)

14 (100.0%)

0 (0.0%)

Trinary

17

23 (avg. 1.4)

17 (100.0%)

0 (0.0%)

47 unimplemented practice exercises

Affine Cipher

Alphametics

Armstrong Numbers

Bank Account

Book Store

Bottle Song

Change

Connect

D&D Character

DOT DSL

Darts

Error Handling

Forth

Go Counting

Grep

Hangman

High Scores

Killer Sudoku Helper

Knapsack

Ledger

Lens Person

Markdown

Micro Blog

POV

PaaS I/O

Parallel Letter Frequency

REST API

Rail Fence Cipher

Rational Numbers

React

Rectangles

Resistor Color

Resistor Color Duo

Resistor Color Trio

Reverse String

SGF Parsing

Satellite

Spiral Matrix

Square Root

State of Tic-Tac-Toe

Tree Building

Two Bucket

Variable Length Quantity

Word Search

Yacht

Zebra Puzzle

Zipper

17,134
students have developed their Swift skills on Exercism.

The Swift track needs attention ⚠️

Build

Create the Swift syllabus

Usage statistics

Build Test Runners

Usage statistics

Build Analyzers

Build Representers

Create Practice Exercises

Usage statistics

We 💙 our volunteers

17,134 students have developed their Swift skills on Exercism.

The Swift track needs attention ⚠️

Build

Create the Swift syllabus

Usage statistics

Build Test Runners

Usage statistics

Build Analyzers

Build Representers

Create Practice Exercises

Usage statistics

We 💙 our volunteers

17,134
students have developed their Swift skills on Exercism.