Gleam impact and status on Exercism

Build Test Runners

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 2. Gleam is currently utilising a Version 1 Test Runner. Find out more.

Usage statistics

Total Test Runner Runs

7,537

Test Run Pass Rate

33.7% (2543)

Test Run Fail Rate

17.6% (1329)

Test Run Error Rate

48.6% (3665)

Build Analyzers

Learn More

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

Next goal: Build an Analyzer. Find out more.

Build Representers

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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 129 practice exercises. Find out more.

Usage statistics

92 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

391

501 (avg. 1.3)

362 (92.6%)

0 (0.0%)

Resistor Color

259

674 (avg. 2.6)

184 (71.0%)

13 (5.0%)

Difference Of Squares

171

888 (avg. 5.2)

136 (79.5%)

11 (6.4%)

Two Fer

139

626 (avg. 4.5)

123 (88.5%)

3 (2.2%)

Bob

111

895 (avg. 8.1)

84 (75.7%)

6 (5.4%)

Leap

107

316 (avg. 3.0)

96 (89.7%)

4 (3.7%)

Accumulate

72

157 (avg. 2.2)

63 (87.5%)

3 (4.2%)

Pascals Triangle

45

183 (avg. 4.1)

33 (73.3%)

3 (6.7%)

Forth

26

78 (avg. 3.0)

8 (30.8%)

3 (11.5%)

Bowling

18

71 (avg. 3.9)

5 (27.8%)

0 (0.0%)

Anagram

32

116 (avg. 3.6)

31 (96.9%)

2 (6.3%)

Pangram

37

145 (avg. 3.9)

35 (94.6%)

2 (5.4%)

Roman Numerals

23

81 (avg. 3.5)

18 (78.3%)

1 (4.3%)

Protein Translation

36

281 (avg. 7.8)

31 (86.1%)

3 (8.3%)

Dominoes

8

6 (avg. 0.8)

3 (37.5%)

0 (0.0%)

RNA Transcription

30

120 (avg. 4.0)

27 (90.0%)

1 (3.3%)

Diamond

10

29 (avg. 2.9)

8 (80.0%)

1 (10.0%)

Series

16

48 (avg. 3.0)

14 (87.5%)

1 (6.3%)

Darts

20

65 (avg. 3.3)

18 (90.0%)

3 (15.0%)

Resistor Color Duo

9

23 (avg. 2.6)

9 (100.0%)

1 (11.1%)

Word Count

8

83 (avg. 10.4)

7 (87.5%)

0 (0.0%)

Custom Set

5

14 (avg. 2.8)

4 (80.0%)

0 (0.0%)

Circular Buffer

15

115 (avg. 7.7)

10 (66.7%)

1 (6.7%)

Raindrops

20

83 (avg. 4.2)

19 (95.0%)

2 (10.0%)

Strain

10

30 (avg. 3.0)

10 (100.0%)

0 (0.0%)

Phone Number

9

82 (avg. 9.1)

5 (55.6%)

0 (0.0%)

Isogram

18

82 (avg. 4.6)

16 (88.9%)

0 (0.0%)

Binary Search Tree

10

20 (avg. 2.0)

8 (80.0%)

1 (10.0%)

Satellite

6

4 (avg. 0.7)

4 (66.7%)

0 (0.0%)

Tournament

3

3 (avg. 1.0)

2 (66.7%)

0 (0.0%)

Zipper

7

26 (avg. 3.7)

5 (71.4%)

0 (0.0%)

POV

4

1 (avg. 0.3)

1 (25.0%)

0 (0.0%)

Sum of Multiples

5

5 (avg. 1.0)

4 (80.0%)

0 (0.0%)

Matching Brackets

18

44 (avg. 2.4)

12 (66.7%)

1 (5.6%)

Triangle

10

32 (avg. 3.2)

9 (90.0%)

1 (10.0%)

Pythagorean Triplet

5

12 (avg. 2.4)

3 (60.0%)

0 (0.0%)

Alphametics

6

1 (avg. 0.2)

1 (16.7%)

0 (0.0%)

Robot Simulator

32

116 (avg. 3.6)

28 (87.5%)

3 (9.4%)

Rectangles

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Acronym

6

10 (avg. 1.7)

5 (83.3%)

1 (16.7%)

Scrabble Score

8

48 (avg. 6.0)

8 (100.0%)

0 (0.0%)

Armstrong Numbers

12

52 (avg. 4.3)

7 (58.3%)

0 (0.0%)

Collatz Conjecture

27

112 (avg. 4.1)

22 (81.5%)

2 (7.4%)

Reverse String

19

67 (avg. 3.5)

16 (84.2%)

1 (5.3%)

Resistor Color Trio

8

102 (avg. 12.8)

7 (87.5%)

2 (25.0%)

Bottle Song

3

14 (avg. 4.7)

2 (66.7%)

0 (0.0%)

List Ops

8

43 (avg. 5.4)

6 (75.0%)

0 (0.0%)

Perfect Numbers

6

21 (avg. 3.5)

6 (100.0%)

0 (0.0%)

Prime Factors

3

28 (avg. 9.3)

3 (100.0%)

0 (0.0%)

Run-Length Encoding

3

2 (avg. 0.7)

2 (66.7%)

0 (0.0%)

Grains

8

50 (avg. 6.3)

7 (87.5%)

1 (12.5%)

Nucleotide count

9

51 (avg. 5.7)

8 (88.9%)

1 (11.1%)

Hamming

27

283 (avg. 10.5)

23 (85.2%)

2 (7.4%)

Proverb

6

20 (avg. 3.3)

5 (83.3%)

0 (0.0%)

High Scores

9

42 (avg. 4.7)

9 (100.0%)

1 (11.1%)

Allergies

7

30 (avg. 4.3)

6 (85.7%)

1 (14.3%)

Twelve Days

4

2 (avg. 0.5)

2 (50.0%)

0 (0.0%)

ETL

8

23 (avg. 2.9)

8 (100.0%)

0 (0.0%)

Queen Attack

5

4 (avg. 0.8)

4 (80.0%)

1 (20.0%)

Sublist

3

6 (avg. 2.0)

3 (100.0%)

0 (0.0%)

Rotational Cipher

4

3 (avg. 0.8)

2 (50.0%)

0 (0.0%)

Change

4

2 (avg. 0.5)

2 (50.0%)

0 (0.0%)

Flatten Array

5

6 (avg. 1.2)

4 (80.0%)

0 (0.0%)

All Your Base

5

12 (avg. 2.4)

4 (80.0%)

1 (20.0%)

Knapsack

3

3 (avg. 1.0)

2 (66.7%)

0 (0.0%)

Yacht

18

159 (avg. 8.8)

16 (88.9%)

1 (5.6%)

D&D Character

4

5 (avg. 1.3)

3 (75.0%)

0 (0.0%)

ISBN Verifier

4

5 (avg. 1.3)

4 (100.0%)

0 (0.0%)

Kindergarten Garden

5

6 (avg. 1.2)

4 (80.0%)

0 (0.0%)

Atbash Cipher

3

3 (avg. 1.0)

2 (66.7%)

0 (0.0%)

Square Root

3

6 (avg. 2.0)

2 (66.7%)

0 (0.0%)

Space Age

8

12 (avg. 1.5)

7 (87.5%)

0 (0.0%)

Simple Cipher

3

1 (avg. 0.3)

1 (33.3%)

0 (0.0%)

Crypto Square

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Affine Cipher

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

House

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Connect

1

0 (avg. 0.0)

0 (0.0%)

Clock

3

13 (avg. 4.3)

3 (100.0%)

0 (0.0%)

Killer Sudoku Helper

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Luhn

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Wordy

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Largest Series Product

4

4 (avg. 1.0)

4 (100.0%)

0 (0.0%)

Minesweeper

1

0 (avg. 0.0)

0 (0.0%)

Say

1

0 (avg. 0.0)

0 (0.0%)

Saddle Points

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Secret Handshake

2

2 (avg. 1.0)

2 (100.0%)

0 (0.0%)

Matrix

2

1 (avg. 0.5)

1 (50.0%)

0 (0.0%)

Grade School

2

0 (avg. 0.0)

0 (0.0%)

Variable Length Quantity

1

0 (avg. 0.0)

0 (0.0%)

OCR Numbers

2

74 (avg. 37.0)

0 (0.0%)

Pig Latin

1

0 (avg. 0.0)

0 (0.0%)

Nth Prime

3

6 (avg. 2.0)

1 (33.3%)

0 (0.0%)

1 deprecated practice exercises

Started

Attempts

Completions

Mentoring requests

Freelancer Rates

11

137 (avg. 12.5)

10 (90.9%)

0 (0.0%)

37 unimplemented practice exercises

Bank Account

Binary Search

Book Store

Complex Numbers

DOT DSL

Error Handling

Food Chain

Gigasecond

Go Counting

Grep

Hangman

Ledger

Lens Person

Linked List

Markdown

Meetup

Micro Blog

PaaS I/O

Palindrome Products

Parallel Letter Frequency

Poker

REST API

Rail Fence Cipher

Rational Numbers

React

Robot Name

SGF Parsing

Scale Generator

Sieve

Simple Linked List

Spiral Matrix

State of Tic-Tac-Toe

Transpose

Tree Building

Two Bucket

Word Search

Zebra Puzzle

448
students have developed their Gleam skills on Exercism.

The Gleam track needs attention ⚠️

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448 students have developed their Gleam skills on Exercism.

The Gleam track needs attention ⚠️

Build

Build Test Runners

Usage statistics

Build Analyzers

Build Representers

Create Practice Exercises

Usage statistics

We 💙 our volunteers

448
students have developed their Gleam skills on Exercism.