Common Lisp impact and status on Exercism

Create the Common Lisp 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 30 concepts. Find out more.

Usage statistics

27 concepts being taught

Co

Comments

983 learnt

Co

Cons

983 learnt

Ex

Expressions

983 learnt

Sy

Symbols

983 learnt

Eq

Equality

156 learnt

Ar

Arithmetic

750 learnt

Fl

Floating Point Numbers

750 learnt

In

Integers

750 learnt

Li

Lists

586 learnt

Co

Conditionals

440 learnt

Tr

Truthy And Falsy

440 learnt

Fu

Functions

415 learnt

Ke

Keyword Parameters

237 learnt

La

Lambda List

237 learnt

Op

Optional Parameters

237 learnt

Re

Rest-Parameters

237 learnt

St

Strings

248 learnt

Ch

Characters

204 learnt

Ar

Arrays

201 learnt

Ve

Vectors

201 learnt

Ha

Hash Tables

193 learnt

Fi

Filtering

181 learnt

Ma

Mapping

181 learnt

Da

Date and Time

207 learnt

Mu

Multiple Values

207 learnt

Re

Reducing

129 learnt

Fo

Format - Basics

126 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Sorting Socks and Sexprs

1,475

8,375 (avg. 5.7)

983 (66.6%)

7 (0.5%)

The Key to Comparison

163

978 (avg. 6.0)

156 (95.7%)

1 (0.6%)

Pizza Pi

836

8,812 (avg. 10.5)

750 (89.7%)

11 (1.3%)

Leslie's Lengthy Lists

627

5,062 (avg. 8.1)

586 (93.5%)

8 (1.3%)

Pal Picker

471

4,736 (avg. 10.1)

440 (93.4%)

6 (1.3%)

Lilly's Lasagna

428

2,387 (avg. 5.6)

415 (97.0%)

2 (0.5%)

Lilly's Lasagna Leftovers

263

3,024 (avg. 11.5)

237 (90.1%)

5 (1.9%)

Log Levels

264

1,909 (avg. 7.2)

248 (93.9%)

4 (1.5%)

Character Study

211

1,108 (avg. 5.3)

204 (96.7%)

1 (0.5%)

Larry's Winning Checker

224

3,102 (avg. 13.8)

201 (89.7%)

6 (2.7%)

High Scores

208

1,338 (avg. 6.4)

193 (92.8%)

1 (0.5%)

Lucy's Magnificent Mapper

189

690 (avg. 3.7)

181 (95.8%)

2 (1.1%)

Gigasecond Anniversary

237

1,820 (avg. 7.7)

207 (87.3%)

1 (0.4%)

Logan's Numeric Partition

147

1,704 (avg. 11.6)

129 (87.8%)

2 (1.4%)

Reporting for Duty

135

817 (avg. 6.1)

126 (93.3%)

1 (0.7%)

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. Common Lisp is currently utilising a Version 2 Test Runner. Find out more.

Usage statistics

Total Test Runner Runs

71,934

Test Run Pass Rate

21.1% (15162)

Test Run Fail Rate

68.5% (49264)

Test Run Error Rate

10.4% (7508)

Build Analyzers

Learn More

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

Usage statistics

Total Analyzer Runs

12,742

Total Analysis Comments Made

0

Feedback Given Frequency

0.0%

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.

Usage statistics

Total Representer Runs

12,742

Total Representation Comments Made

1,980

Feedback Given Frequency

15.5%

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 121 practice exercises. Find out more.

Usage statistics

68 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

3,075

4,056 (avg. 1.3)

2,441 (79.4%)

8 (0.3%)

Two Fer

534

1,301 (avg. 2.4)

429 (80.3%)

241 (45.1%)

Hamming

681

1,947 (avg. 2.9)

571 (83.8%)

362 (53.2%)

RNA Transcription

403

963 (avg. 2.4)

350 (86.8%)

184 (45.7%)

Leap

571

1,438 (avg. 2.5)

536 (93.9%)

243 (42.6%)

Anagram

263

843 (avg. 3.2)

222 (84.4%)

113 (43.0%)

Beer Song

237

1,279 (avg. 5.4)

200 (84.4%)

100 (42.2%)

Roman Numerals

232

649 (avg. 2.8)

200 (86.2%)

89 (38.4%)

Word Count

214

802 (avg. 3.7)

167 (78.0%)

92 (43.0%)

Bob

259

753 (avg. 2.9)

213 (82.2%)

137 (52.9%)

Twelve Days

86

302 (avg. 3.5)

72 (83.7%)

8 (9.3%)

Acronym

243

480 (avg. 2.0)

172 (70.8%)

47 (19.3%)

All Your Base

367

1,910 (avg. 5.2)

156 (42.5%)

21 (5.7%)

Allergies

101

429 (avg. 4.2)

82 (81.2%)

11 (10.9%)

Armstrong Numbers

98

227 (avg. 2.3)

83 (84.7%)

3 (3.1%)

Binary Search

74

439 (avg. 5.9)

61 (82.4%)

5 (6.8%)

Collatz Conjecture

257

1,183 (avg. 4.6)

202 (78.6%)

29 (11.3%)

Difference of Squares

254

994 (avg. 3.9)

216 (85.0%)

12 (4.7%)

ETL

132

345 (avg. 2.6)

100 (75.8%)

17 (12.9%)

Grains

346

916 (avg. 2.6)

324 (93.6%)

55 (15.9%)

Isogram

99

242 (avg. 2.4)

83 (83.8%)

14 (14.1%)

Nucleotide Count

120

310 (avg. 2.6)

94 (78.3%)

19 (15.8%)

Pascal's Triangle

134

655 (avg. 4.9)

93 (69.4%)

11 (8.2%)

Perfect Numbers

115

393 (avg. 3.4)

96 (83.5%)

9 (7.8%)

Raindrops

155

352 (avg. 2.3)

127 (81.9%)

28 (18.1%)

Scrabble Score

94

204 (avg. 2.2)

78 (83.0%)

8 (8.5%)

Sieve

108

361 (avg. 3.3)

87 (80.6%)

28 (25.9%)

Space Age

178

581 (avg. 3.3)

148 (83.1%)

24 (13.5%)

Strain

100

161 (avg. 1.6)

87 (87.0%)

11 (11.0%)

Sublist

262

1,049 (avg. 4.0)

162 (61.8%)

31 (11.8%)

Triangle

111

325 (avg. 2.9)

88 (79.3%)

14 (12.6%)

Atbash Cipher

83

235 (avg. 2.8)

67 (80.7%)

4 (4.8%)

Grade School

126

376 (avg. 3.0)

92 (73.0%)

22 (17.5%)

Phone Number

122

249 (avg. 2.0)

102 (83.6%)

20 (16.4%)

Prime Factors

95

193 (avg. 2.0)

71 (74.7%)

12 (12.6%)

Robot Name

169

447 (avg. 2.6)

144 (85.2%)

59 (34.9%)

Robot Simulator

67

201 (avg. 3.0)

47 (70.1%)

4 (6.0%)

Crypto Square

74

289 (avg. 3.9)

55 (74.3%)

8 (10.8%)

Meetup

79

348 (avg. 4.4)

56 (70.9%)

8 (10.1%)

Luhn

176

409 (avg. 2.3)

126 (71.6%)

23 (13.1%)

Book Store

25

457 (avg. 18.3)

17 (68.0%)

2 (8.0%)

ISBN Verifier

26

141 (avg. 5.4)

24 (92.3%)

0 (0.0%)

Sum of Multiples

47

173 (avg. 3.7)

39 (83.0%)

2 (4.3%)

Matching Brackets

39

261 (avg. 6.7)

35 (89.7%)

0 (0.0%)

Run-Length Encoding

19

161 (avg. 8.5)

16 (84.2%)

1 (5.3%)

Largest Series Product

19

123 (avg. 6.5)

18 (94.7%)

0 (0.0%)

Queen Attack

23

78 (avg. 3.4)

21 (91.3%)

0 (0.0%)

Nth Prime

47

204 (avg. 4.3)

35 (74.5%)

0 (0.0%)

Knapsack

16

121 (avg. 7.6)

15 (93.8%)

0 (0.0%)

Rail Fence Cipher

14

126 (avg. 9.0)

12 (85.7%)

0 (0.0%)

Pig Latin

14

199 (avg. 14.2)

12 (85.7%)

0 (0.0%)

Protein Translation

18

124 (avg. 6.9)

16 (88.9%)

0 (0.0%)

Saddle Points

20

89 (avg. 4.5)

15 (75.0%)

0 (0.0%)

Matrix

15

99 (avg. 6.6)

14 (93.3%)

0 (0.0%)

Palindrome Products

18

195 (avg. 10.8)

15 (83.3%)

0 (0.0%)

Pythagorean Triplet

21

164 (avg. 7.8)

17 (81.0%)

1 (4.8%)

Affine Cipher

15

240 (avg. 16.0)

13 (86.7%)

0 (0.0%)

Say

15

28 (avg. 1.9)

13 (86.7%)

0 (0.0%)

Two Bucket

16

158 (avg. 9.9)

11 (68.8%)

2 (12.5%)

Flatten Array

17

41 (avg. 2.4)

17 (100.0%)

0 (0.0%)

Spiral Matrix

16

90 (avg. 5.6)

15 (93.8%)

0 (0.0%)

Diamond

12

110 (avg. 9.2)

11 (91.7%)

0 (0.0%)

Rotational Cipher

21

53 (avg. 2.5)

18 (85.7%)

0 (0.0%)

Pangram

18

67 (avg. 3.7)

17 (94.4%)

0 (0.0%)

Secret Handshake

25

98 (avg. 3.9)

23 (92.0%)

0 (0.0%)

Darts

64

245 (avg. 3.8)

59 (92.2%)

0 (0.0%)

Proverb

15

70 (avg. 4.7)

15 (100.0%)

0 (0.0%)

Food Chain

13

104 (avg. 8.0)

10 (76.9%)

0 (0.0%)

3 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Binary

71

137 (avg. 1.9)

55 (77.5%)

12 (16.9%)

Gigasecond

176

227 (avg. 1.3)

147 (83.5%)

40 (22.7%)

Trinary

59

85 (avg. 1.4)

47 (79.7%)

8 (13.6%)

53 unimplemented practice exercises

Alphametics

Binary Search Tree

Bottle Song

Bowling

Change

Circular Buffer

Clock

Complex Numbers

Connect

Custom Set

D&D Character

DOT DSL

Dominoes

Error Handling

Forth

Go Counting

Grep

Hangman

High Scores

House

Killer Sudoku Helper

Kindergarten Garden

Ledger

Markdown

Micro Blog

Minesweeper

OCR Numbers

POV

PaaS I/O

Poker

REST API

Rational Numbers

React

Rectangles

Resistor Color

Resistor Color Duo

Resistor Color Trio

SGF Parsing

Satellite

Scale Generator

Series

Simple Cipher

Square Root

State of Tic-Tac-Toe

Tournament

Transpose

Tree Building

Variable Length Quantity

Word Search

Wordy

Yacht

Zebra Puzzle

Zipper

8 foregone practice exercises

Accumulate

Bank Account

Lens Person

Linked List

List Ops

Parallel Letter Frequency

View data

Reverse String

View data

Simple Linked List

View data

4,670
students have developed their Common Lisp skills on Exercism.

The Common Lisp track needs attention ⚠️

Build

Create the Common Lisp syllabus

Usage statistics

Build Test Runners

Usage statistics

Build Analyzers

Usage statistics

Build Representers

Usage statistics

Create Practice Exercises

Usage statistics

We 💙 our volunteers

Language Tracks

#12in23 Challenge

Your Journey

Community Videos

Brief Introduction Series

Interviews & Stories

Discord

Forum

Getting started

Mentoring

Docs

Contributors

About Exercism

Our Impact

Donate

Insiders

SWAG

4,670 students have developed their Common Lisp skills on Exercism.

The Common Lisp track needs attention ⚠️

Build

Create the Common Lisp syllabus

Usage statistics

Build Test Runners

Usage statistics

Build Analyzers

Usage statistics

Build Representers

Usage statistics

Create Practice Exercises

Usage statistics

We 💙 our volunteers

4,670
students have developed their Common Lisp skills on Exercism.