Swift impact and status on Exercism

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28,912 students

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Swift Track Management

This page provides the Exercism community with the information and tools needed to manage the Swift track.

Students

28,912

Submissions

470,109

Mentoring Discussions

3,479

The Swift track needs attention ⚠️

Building

Swift syllabus

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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 40 concepts. Find out more.

35 concepts being taught

Basics

6,705 learnt

Booleans

3,273 learnt

Numbers

3,714 learnt

Characters and Strings

3,109 learnt

Escaping functions

2,173 learnt

Higher Order Functions

2,173 learnt

Conditionals

2,394 learnt

Ternary operator

2,394 learnt

Arrays

1,851 learnt

Ranges

438 learnt

for loops

388 learnt

Tuples

1,546 learnt

Optionals

1,290 learnt

Conditionals Switch

877 learnt

Control transfer

877 learnt

While and repeat loops

877 learnt

Capturing

695 learnt

Closures

695 learnt

Shorthand arguments

695 learnt

Trailing closures

695 learnt

Dictionaries

846 learnt

Importing

835 learnt

String Indexing

835 learnt

String Methods

835 learnt

Default Parameters

1,070 learnt

Function Overloading

1,070 learnt

Inout Parameters

1,070 learnt

Multiple Return Values

1,070 learnt

Nested Functions

1,070 learnt

Variadic Parameters

1,070 learnt

Methods

688 learnt

Self

688 learnt

Structs And Classes

688 learnt

Value and reference types

688 learnt

Enumerations

608 learnt

18 active learning exercises

Started

Attempts

Completions

Mentoring requests

Layers of Lasagna

9,743

53,043 (avg. 5.4)

6,705 (68.8%)

99 (1.0%)

Wings Quest

3,783

16,335 (avg. 4.3)

3,273 (86.5%)

43 (1.1%)

Freelancer Rates

4,794

56,517 (avg. 11.8)

3,714 (77.5%)

56 (1.2%)

Cal's Custom Sign Shop

3,566

30,550 (avg. 8.6)

3,109 (87.2%)

20 (0.6%)

Secret Agent Double-Null0111

2,711

12,384 (avg. 4.6)

2,173 (80.2%)

25 (0.9%)

Vexing Vehicle Purchase

2,932

28,953 (avg. 9.9)

2,394 (81.7%)

38 (1.3%)

Magician-in-Training

2,117

25,983 (avg. 12.3)

1,851 (87.4%)

31 (1.5%)

ChessBoard

485

2,735 (avg. 5.6)

438 (90.3%)

2 (0.4%)

Bird Watcher

434

2,085 (avg. 4.8)

388 (89.4%)

5 (1.2%)

Santa's Swifty Helper

1,630

6,905 (avg. 4.2)

1,546 (94.8%)

10 (0.6%)

Slice Sizing

1,463

19,065 (avg. 13.0)

1,290 (88.2%)

34 (2.3%)

Expert Mixologist

1,045

13,396 (avg. 12.8)

877 (83.9%)

18 (1.7%)

Double-Null0111: Closures Are Forever

809

5,718 (avg. 7.1)

695 (85.9%)

8 (1.0%)

High Score Board

925

6,137 (avg. 6.6)

846 (91.5%)

7 (0.8%)

The 1st Rule of Poetry Club

943

9,554 (avg. 10.1)

835 (88.5%)

10 (1.1%)

Lasagna Master

1,168

10,307 (avg. 8.8)

1,070 (91.6%)

20 (1.7%)

Windowing System

813

9,204 (avg. 11.3)

688 (84.6%)

13 (1.6%)

Log Lines

659

2,621 (avg. 4.0)

608 (92.3%)

2 (0.3%)

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.

Synced primary repo: 48a8008020eb93077d480ceeb84c430de08e8331 (Updates should be instant)

Next goal: Implement 138 practice exercises. Find out more.

98 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

21,229

45,169 (avg. 2.1)

15,368 (72.4%)

16 (0.1%)

Difference of Squares

2,543

9,385 (avg. 3.7)

1,680 (66.1%)

230 (9.0%)

Gigasecond

2,181

4,083 (avg. 1.9)

1,493 (68.5%)

277 (12.7%)

Leap

3,104

7,051 (avg. 2.3)

2,600 (83.8%)

585 (18.8%)

RNA Transcription

1,449

3,698 (avg. 2.6)

1,197 (82.6%)

157 (10.8%)

Space Age

1,156

2,728 (avg. 2.4)

956 (82.7%)

95 (8.2%)

Sum of Multiples

1,231

3,659 (avg. 3.0)

1,004 (81.6%)

123 (10.0%)

Two Fer

2,487

4,494 (avg. 1.8)

1,974 (79.4%)

921 (37.0%)

Reverse String

389

1,218 (avg. 3.1)

318 (81.7%)

4 (1.0%)

Resistor Color

104

473 (avg. 4.5)

83 (79.8%)

2 (1.9%)

Darts

177

611 (avg. 3.5)

137 (77.4%)

4 (2.3%)

Bob

1,069

4,143 (avg. 3.9)

881 (82.4%)

87 (8.1%)

ETL

843

1,612 (avg. 1.9)

733 (87.0%)

19 (2.3%)

Armstrong Numbers

140

699 (avg. 5.0)

119 (85.0%)

3 (2.1%)

Grade School

818

2,774 (avg. 3.4)

649 (79.3%)

27 (3.3%)

Grains

794

2,889 (avg. 3.6)

664 (83.6%)

61 (7.7%)

Hamming

961

2,283 (avg. 2.4)

879 (91.5%)

76 (7.9%)

Isogram

689

1,672 (avg. 2.4)

586 (85.1%)

17 (2.5%)

List Ops

720

5,337 (avg. 7.4)

508 (70.6%)

15 (2.1%)

Nucleotide Count

1,109

2,510 (avg. 2.3)

839 (75.7%)

64 (5.8%)

Raindrops

836

1,738 (avg. 2.1)

717 (85.8%)

32 (3.8%)

Resistor Color Duo

180 (avg. 2.7)

53 (79.1%)

4 (6.0%)

High Scores

193 (avg. 2.8)

55 (78.6%)

0 (0.0%)

D&D Character

68 (avg. 2.1)

24 (72.7%)

0 (0.0%)

Square Root

62 (avg. 2.0)

24 (77.4%)

0 (0.0%)

Binary Search

445

1,225 (avg. 2.8)

334 (75.1%)

3 (0.7%)

Circular Buffer

339

1,653 (avg. 4.9)

241 (71.1%)

3 (0.9%)

Clock

537

1,759 (avg. 3.3)

413 (76.9%)

12 (2.2%)

Collatz Conjecture

356

918 (avg. 2.6)

301 (84.6%)

4 (1.1%)

Diamond

314

937 (avg. 3.0)

231 (73.6%)

1 (0.3%)

Flatten Array

375

1,150 (avg. 3.1)

292 (77.9%)

7 (1.9%)

ISBN Verifier

313

1,078 (avg. 3.4)

242 (77.3%)

6 (1.9%)

Kindergarten Garden

377

918 (avg. 2.4)

307 (81.4%)

5 (1.3%)

Perfect Numbers

384

1,217 (avg. 3.2)

326 (84.9%)

7 (1.8%)

Phone Number

528

1,965 (avg. 3.7)

441 (83.5%)

10 (1.9%)

Protein Translation

299

1,138 (avg. 3.8)

228 (76.3%)

5 (1.7%)

Proverb

254

782 (avg. 3.1)

201 (79.1%)

5 (2.0%)

Queen Attack

360

896 (avg. 2.5)

300 (83.3%)

7 (1.9%)

Robot Name

515

1,079 (avg. 2.1)

412 (80.0%)

7 (1.4%)

Robot Simulator

355

892 (avg. 2.5)

277 (78.0%)

10 (2.8%)

Scrabble Score

489

1,238 (avg. 2.5)

421 (86.1%)

6 (1.2%)

Secret Handshake

290

521 (avg. 1.8)

235 (81.0%)

1 (0.3%)

Sieve

341

792 (avg. 2.3)

285 (83.6%)

2 (0.6%)

Strain

348

518 (avg. 1.5)

285 (81.9%)

2 (0.6%)

Sublist

292

873 (avg. 3.0)

218 (74.7%)

4 (1.4%)

Triangle

518

1,424 (avg. 2.7)

433 (83.6%)

6 (1.2%)

Bottle Song

116

668 (avg. 5.8)

71 (61.2%)

2 (1.7%)

Resistor Color Trio

131 (avg. 2.7)

37 (75.5%)

1 (2.0%)

Yacht

79 (avg. 3.4)

16 (69.6%)

0 (0.0%)

Acronym

409

1,486 (avg. 3.6)

267 (65.3%)

8 (2.0%)

All Your Base

278

928 (avg. 3.3)

180 (64.7%)

3 (1.1%)

Allergies

415

1,084 (avg. 2.6)

305 (73.5%)

9 (2.2%)

Anagram

443

1,225 (avg. 2.8)

374 (84.4%)

13 (2.9%)

House

199

521 (avg. 2.6)

142 (71.4%)

1 (0.5%)

Largest Series Product

216

734 (avg. 3.4)

161 (74.5%)

6 (2.8%)

Matrix

260

497 (avg. 1.9)

190 (73.1%)

0 (0.0%)

Meetup

231

532 (avg. 2.3)

146 (63.2%)

2 (0.9%)

Pangram

234

519 (avg. 2.2)

181 (77.4%)

4 (1.7%)

Pascal's Triangle

203

382 (avg. 1.9)

145 (71.4%)

1 (0.5%)

Prime Factors

205

384 (avg. 1.9)

158 (77.1%)

3 (1.5%)

Pythagorean Triplet

198

616 (avg. 3.1)

140 (70.7%)

3 (1.5%)

Rotational Cipher

152

442 (avg. 2.9)

111 (73.0%)

2 (1.3%)

Saddle Points

161

519 (avg. 3.2)

117 (72.7%)

2 (1.2%)

Say

124

395 (avg. 3.2)

77 (62.1%)

1 (0.8%)

Series

228

565 (avg. 2.5)

170 (74.6%)

1 (0.4%)

Simple Linked List

234

714 (avg. 3.1)

160 (68.4%)

0 (0.0%)

Twelve Days

242

444 (avg. 1.8)

180 (74.4%)

1 (0.4%)

Word Count

549

977 (avg. 1.8)

436 (79.4%)

13 (2.4%)

Atbash Cipher

135

498 (avg. 3.7)

105 (77.8%)

1 (0.7%)

Binary Search Tree

192

799 (avg. 4.2)

133 (69.3%)

3 (1.6%)

Crypto Square

130

496 (avg. 3.8)

93 (71.5%)

0 (0.0%)

Custom Set

161

446 (avg. 2.8)

100 (62.1%)

4 (2.5%)

Food Chain

107

232 (avg. 2.2)

72 (67.3%)

0 (0.0%)

Knapsack

164 (avg. 3.7)

28 (63.6%)

0 (0.0%)

Linked List

174

467 (avg. 2.7)

119 (68.4%)

6 (3.4%)

Luhn

155

566 (avg. 3.7)

115 (74.2%)

5 (3.2%)

OCR Numbers

116

277 (avg. 2.4)

73 (62.9%)

2 (1.7%)

Roman Numerals

179

460 (avg. 2.6)

129 (72.1%)

3 (1.7%)

Run-Length Encoding

132

371 (avg. 2.8)

94 (71.2%)

1 (0.8%)

Simple Cipher

118

306 (avg. 2.6)

77 (65.3%)

0 (0.0%)

Rail Fence Cipher

39 (avg. 1.9)

16 (76.2%)

0 (0.0%)

Spiral Matrix

35 (avg. 1.7)

17 (81.0%)

0 (0.0%)

Word Search

153 (avg. 7.0)

16 (72.7%)

0 (0.0%)

Conway's Game of Life

33 (avg. 1.7)

13 (68.4%)

0 (0.0%)

Affine Cipher

17 (avg. 1.1)

10 (66.7%)

0 (0.0%)

Bowling

128

387 (avg. 3.0)

70 (54.7%)

0 (0.0%)

Complex Numbers

105

288 (avg. 2.7)

65 (61.9%)

1 (1.0%)

Nth Prime

148

411 (avg. 2.8)

105 (70.9%)

1 (0.7%)

Palindrome Products

116

555 (avg. 4.8)

77 (66.4%)

0 (0.0%)

Pig Latin

118

317 (avg. 2.7)

74 (62.7%)

2 (1.7%)

Tournament

115

434 (avg. 3.8)

82 (71.3%)

2 (1.7%)

Transpose

108

387 (avg. 3.6)

68 (63.0%)

0 (0.0%)

Matching Brackets

148

358 (avg. 2.4)

110 (74.3%)

1 (0.7%)

Dominoes

111

177 (avg. 1.6)

66 (59.5%)

0 (0.0%)

Flower Field

39 (avg. 1.6)

17 (70.8%)

0 (0.0%)

Wordy

144

436 (avg. 3.0)

95 (66.0%)

4 (2.8%)

SGF Parsing

127 (avg. 7.1)

12 (66.7%)

1 (5.6%)

Poker

343

506 (avg. 1.5)

76 (22.2%)

1 (0.3%)

8 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Accumulate

972

2,234 (avg. 2.3)

705 (72.5%)

42 (4.3%)

Beer Song

182

256 (avg. 1.4)

133 (73.1%)

1 (0.5%)

Binary

35 (avg. 1.5)

23 (100.0%)

0 (0.0%)

Hexadecimal

6 (avg. 1.0)

6 (100.0%)

0 (0.0%)

Minesweeper

122

335 (avg. 2.7)

78 (63.9%)

2 (1.6%)

Octal

18 (avg. 1.3)

14 (100.0%)

0 (0.0%)

Scale Generator

179

385 (avg. 2.2)

108 (60.3%)

1 (0.6%)

Trinary

23 (avg. 1.4)

17 (100.0%)

0 (0.0%)

40 unimplemented practice exercises

Alphametics

Baffling Birthdays

Bank Account

Book Store

Camicia

Change

Connect

DOT DSL

Eliud's Eggs

Error Handling

Forth

Go Counting

Grep

Intergalactic Transmission

Killer Sudoku Helper

Ledger

Lens Person

Line Up

Markdown

Micro Blog

PaaS I/O

Parallel Letter Frequency

Piecing It Together

POV

Prism

Rational Numbers

React

Rectangles

Relative Distance

REST API

Satellite

Save the Cow

Split-Second Stopwatch

State of Tic-Tac-Toe

Swift Scheduling

Tree Building

Two Bucket

Variable Length Quantity

View data

Zebra Puzzle

View data

Zipper

View data

Test Runner

Learn More

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

Current version: 0b02fc4f587420e8c7f570abb4f480b411a302b3 (Takes up to 10 mins to deploy)

Total Test Runner Runs

453,880

Test Run Pass Rate

18.3% (83196)

Test Run Fail Rate

22.5% (102329)

Test Run Error Rate

59.1% (268355)

Representer

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.

Analyzer

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.

333 Volunteers

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The Swift track needs attention ⚠️

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