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

1,078 learnt

Co

Cons

1,078 learnt

Ex

Expressions

1,078 learnt

Sy

Symbols

1,078 learnt

Eq

Equality

179 learnt

Ar

Arithmetic

825 learnt

Fl

Floating Point Numbers

825 learnt

In

Integers

825 learnt

Li

Lists

648 learnt

Co

Conditionals

496 learnt

Tr

Truthy And Falsy

496 learnt

Fu

Functions

464 learnt

Ke

Keyword Parameters

268 learnt

La

Lambda List

268 learnt

Op

Optional Parameters

268 learnt

Re

Rest-Parameters

268 learnt

St

Strings

281 learnt

Ch

Characters

236 learnt

Ar

Arrays

231 learnt

Ve

Vectors

231 learnt

Ha

Hash Tables

220 learnt

Fi

Filtering

210 learnt

Ma

Mapping

210 learnt

Da

Date and Time

233 learnt

Mu

Multiple Values

233 learnt

Re

Reducing

151 learnt

Fo

Format - Basics

148 learnt

15 active learning exercises

Started

Attempts

Completions

Mentoring requests

Sorting Socks and Sexprs

1,610

9,044 (avg. 5.6)

1,078 (67.0%)

7 (0.4%)

The Key to Comparison

188

1,100 (avg. 5.9)

179 (95.2%)

1 (0.5%)

Pizza Pi

918

9,785 (avg. 10.7)

825 (89.9%)

11 (1.2%)

Leslie's Lengthy Lists

695

5,543 (avg. 8.0)

648 (93.2%)

9 (1.3%)

Pal Picker

531

5,140 (avg. 9.7)

496 (93.4%)

6 (1.1%)

Lilly's Lasagna

477

2,642 (avg. 5.5)

464 (97.3%)

2 (0.4%)

Lilly's Lasagna Leftovers

294

3,433 (avg. 11.7)

268 (91.2%)

5 (1.7%)

Log Levels

299

2,146 (avg. 7.2)

281 (94.0%)

4 (1.3%)

Character Study

244

1,198 (avg. 4.9)

236 (96.7%)

1 (0.4%)

Larry's Winning Checker

257

3,531 (avg. 13.7)

231 (89.9%)

6 (2.3%)

High Scores

235

1,473 (avg. 6.3)

220 (93.6%)

1 (0.4%)

Lucy's Magnificent Mapper

217

870 (avg. 4.0)

210 (96.8%)

2 (0.9%)

Gigasecond Anniversary

262

1,965 (avg. 7.5)

233 (88.9%)

1 (0.4%)

Logan's Numeric Partition

170

1,834 (avg. 10.8)

151 (88.8%)

3 (1.8%)

Reporting for Duty

157

967 (avg. 6.2)

148 (94.3%)

1 (0.6%)

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

79,702

Test Run Pass Rate

21.1% (16847)

Test Run Fail Rate

68.6% (54681)

Test Run Error Rate

10.3% (8174)

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

14,333

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

14,359

Total Representation Comments Made

2,161

Feedback Given Frequency

15.0%

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

3,270

4,343 (avg. 1.3)

2,606 (79.7%)

8 (0.2%)

Two Fer

558

1,503 (avg. 2.7)

452 (81.0%)

241 (43.2%)

Hamming

697

2,000 (avg. 2.9)

585 (83.9%)

362 (51.9%)

RNA Transcription

415

1,005 (avg. 2.4)

362 (87.2%)

184 (44.3%)

Leap

592

1,507 (avg. 2.5)

557 (94.1%)

243 (41.0%)

Anagram

271

869 (avg. 3.2)

230 (84.9%)

114 (42.1%)

Beer Song

246

1,392 (avg. 5.7)

208 (84.6%)

100 (40.7%)

Roman Numerals

243

670 (avg. 2.8)

206 (84.8%)

89 (36.6%)

Word Count

224

823 (avg. 3.7)

174 (77.7%)

93 (41.5%)

Bob

268

829 (avg. 3.1)

221 (82.5%)

137 (51.1%)

Twelve Days

93

324 (avg. 3.5)

79 (84.9%)

8 (8.6%)

Acronym

251

516 (avg. 2.1)

180 (71.7%)

47 (18.7%)

All Your Base

387

2,018 (avg. 5.2)

167 (43.2%)

22 (5.7%)

Allergies

111

531 (avg. 4.8)

91 (82.0%)

11 (9.9%)

Armstrong Numbers

108

272 (avg. 2.5)

93 (86.1%)

3 (2.8%)

Binary Search

82

469 (avg. 5.7)

68 (82.9%)

5 (6.1%)

Collatz Conjecture

278

1,322 (avg. 4.8)

224 (80.6%)

30 (10.8%)

Difference of Squares

280

1,124 (avg. 4.0)

241 (86.1%)

13 (4.6%)

ETL

141

414 (avg. 2.9)

110 (78.0%)

17 (12.1%)

Grains

364

1,005 (avg. 2.8)

343 (94.2%)

55 (15.1%)

Isogram

105

261 (avg. 2.5)

90 (85.7%)

14 (13.3%)

Nucleotide Count

127

378 (avg. 3.0)

101 (79.5%)

19 (15.0%)

Pascal's Triangle

144

703 (avg. 4.9)

101 (70.1%)

11 (7.6%)

Perfect Numbers

120

412 (avg. 3.4)

101 (84.2%)

9 (7.5%)

Raindrops

162

370 (avg. 2.3)

134 (82.7%)

28 (17.3%)

Scrabble Score

101

226 (avg. 2.2)

84 (83.2%)

8 (7.9%)

Sieve

115

377 (avg. 3.3)

95 (82.6%)

28 (24.3%)

Space Age

194

657 (avg. 3.4)

163 (84.0%)

26 (13.4%)

Strain

108

194 (avg. 1.8)

95 (88.0%)

11 (10.2%)

Sublist

278

1,147 (avg. 4.1)

171 (61.5%)

32 (11.5%)

Triangle

117

370 (avg. 3.2)

94 (80.3%)

14 (12.0%)

Atbash Cipher

90

294 (avg. 3.3)

74 (82.2%)

5 (5.6%)

Grade School

131

396 (avg. 3.0)

97 (74.0%)

23 (17.6%)

Phone Number

127

261 (avg. 2.1)

107 (84.3%)

20 (15.7%)

Prime Factors

100

216 (avg. 2.2)

76 (76.0%)

12 (12.0%)

Robot Name

185

532 (avg. 2.9)

157 (84.9%)

60 (32.4%)

Robot Simulator

75

219 (avg. 2.9)

51 (68.0%)

4 (5.3%)

Crypto Square

79

335 (avg. 4.2)

60 (75.9%)

8 (10.1%)

Meetup

83

378 (avg. 4.6)

59 (71.1%)

8 (9.6%)

Luhn

181

431 (avg. 2.4)

131 (72.4%)

24 (13.3%)

Book Store

29

459 (avg. 15.8)

19 (65.5%)

2 (6.9%)

ISBN Verifier

31

159 (avg. 5.1)

28 (90.3%)

0 (0.0%)

Sum of Multiples

58

219 (avg. 3.8)

47 (81.0%)

2 (3.4%)

Matching Brackets

57

352 (avg. 6.2)

53 (93.0%)

0 (0.0%)

Run-Length Encoding

22

180 (avg. 8.2)

18 (81.8%)

1 (4.5%)

Largest Series Product

22

137 (avg. 6.2)

21 (95.5%)

0 (0.0%)

Queen Attack

28

93 (avg. 3.3)

25 (89.3%)

0 (0.0%)

Nth Prime

53

211 (avg. 4.0)

39 (73.6%)

0 (0.0%)

Knapsack

19

129 (avg. 6.8)

18 (94.7%)

0 (0.0%)

Rail Fence Cipher

18

130 (avg. 7.2)

14 (77.8%)

0 (0.0%)

Pig Latin

17

217 (avg. 12.8)

15 (88.2%)

0 (0.0%)

Protein Translation

22

133 (avg. 6.0)

19 (86.4%)

0 (0.0%)

Saddle Points

24

93 (avg. 3.9)

19 (79.2%)

0 (0.0%)

Matrix

20

102 (avg. 5.1)

17 (85.0%)

0 (0.0%)

Palindrome Products

24

207 (avg. 8.6)

18 (75.0%)

0 (0.0%)

Pythagorean Triplet

25

177 (avg. 7.1)

19 (76.0%)

1 (4.0%)

Affine Cipher

18

242 (avg. 13.4)

15 (83.3%)

0 (0.0%)

Say

20

37 (avg. 1.9)

17 (85.0%)

0 (0.0%)

Two Bucket

19

160 (avg. 8.4)

13 (68.4%)

2 (10.5%)

Flatten Array

23

67 (avg. 2.9)

23 (100.0%)

0 (0.0%)

Spiral Matrix

20

94 (avg. 4.7)

18 (90.0%)

0 (0.0%)

Diamond

14

114 (avg. 8.1)

13 (92.9%)

0 (0.0%)

Rotational Cipher

27

66 (avg. 2.4)

24 (88.9%)

0 (0.0%)

Pangram

25

83 (avg. 3.3)

24 (96.0%)

0 (0.0%)

Secret Handshake

32

128 (avg. 4.0)

30 (93.8%)

0 (0.0%)

Darts

78

337 (avg. 4.3)

71 (91.0%)

0 (0.0%)

Proverb

21

88 (avg. 4.2)

21 (100.0%)

0 (0.0%)

Food Chain

15

106 (avg. 7.1)

12 (80.0%)

0 (0.0%)

3 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Binary

71

138 (avg. 1.9)

56 (78.9%)

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

4,875
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

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Build Representers

Usage statistics

Create Practice Exercises

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4,875 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

4,875
students have developed their Common Lisp skills on Exercism.