Wren

273 students

19 contributors

273
students have developed their Wren skills on Exercism.

Students

273

Submissions

4,834

Mentoring Discussions

19

The Wren track needs attention ⚠️

Building

Build

Use your knowledge to build the Wren track itself

19 contributors

Build Test Runners

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

Usage statistics

Total Test Runner Runs

4,806

Test Run Pass Rate

30.3% (1457)

Test Run Fail Rate

50.3% (2417)

Test Run Error Rate

19.4% (932)

Build Analyzers

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

Next goal: Build an Analyzer. Find out more.

Build Representers

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

1,130

Total Representation Comments Made

0

Feedback Given Frequency

0.0%

Create Practice Exercises

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 131 practice exercises. Find out more.

Usage statistics

67 active practice exercises

Started

Attempts

Completions

Mentoring requests

Hello World

205

314 (avg. 1.5)

166 (81.0%)

0 (0.0%)

Two Fer

124

311 (avg. 2.5)

88 (71.0%)

1 (0.8%)

Leap Years

58

225 (avg. 3.9)

53 (91.4%)

2 (3.4%)

Resistor Color

75

339 (avg. 4.5)

51 (68.0%)

0 (0.0%)

RNA Transcription

38

174 (avg. 4.6)

32 (84.2%)

2 (5.3%)

High Scores

41

479 (avg. 11.7)

33 (80.5%)

2 (4.9%)

Collatz Conjecture

27

168 (avg. 6.2)

26 (96.3%)

1 (3.7%)

Hamming

26

106 (avg. 4.1)

24 (92.3%)

2 (7.7%)

Triangle

20

163 (avg. 8.2)

19 (95.0%)

2 (10.0%)

Bank Account

19

144 (avg. 7.6)

17 (89.5%)

0 (0.0%)

Acronym

17

153 (avg. 9.0)

13 (76.5%)

1 (5.9%)

Accumulate

18

33 (avg. 1.8)

16 (88.9%)

0 (0.0%)

Grains

16

80 (avg. 5.0)

15 (93.8%)

0 (0.0%)

Darts

16

35 (avg. 2.2)

14 (87.5%)

0 (0.0%)

Difference of Squares

11

50 (avg. 4.5)

10 (90.9%)

0 (0.0%)

Armstrong Numbers

15

81 (avg. 5.4)

13 (86.7%)

1 (6.7%)

Nucleotide Count

15

54 (avg. 3.6)

11 (73.3%)

0 (0.0%)

Protein Translation

12

130 (avg. 10.8)

10 (83.3%)

0 (0.0%)

Raindrops

13

36 (avg. 2.8)

11 (84.6%)

0 (0.0%)

Resistor Color Duo

12

43 (avg. 3.6)

11 (91.7%)

0 (0.0%)

Reverse String

15

48 (avg. 3.2)

13 (86.7%)

1 (6.7%)

Scrabble Score

11

56 (avg. 5.1)

10 (90.9%)

0 (0.0%)

Space Age

11

45 (avg. 4.1)

9 (81.8%)

0 (0.0%)

Matching Brackets

10

34 (avg. 3.4)

8 (80.0%)

0 (0.0%)

Word Count

11

84 (avg. 7.6)

8 (72.7%)

0 (0.0%)

D&D Character

16

138 (avg. 8.6)

13 (81.3%)

0 (0.0%)

Isogram

7

40 (avg. 5.7)

7 (100.0%)

0 (0.0%)

Binary

16

95 (avg. 5.9)

16 (100.0%)

1 (6.3%)

Flatten Array

16

56 (avg. 3.5)

15 (93.8%)

0 (0.0%)

Allergies

14

44 (avg. 3.1)

12 (85.7%)

0 (0.0%)

Bob

12

44 (avg. 3.7)

9 (75.0%)

1 (8.3%)

Anagram

9

50 (avg. 5.6)

6 (66.7%)

0 (0.0%)

Roman Numerals

8

8 (avg. 1.0)

6 (75.0%)

0 (0.0%)

ISBN Verifier

9

26 (avg. 2.9)

7 (77.8%)

0 (0.0%)

Resistor Color Trio

9

76 (avg. 8.4)

6 (66.7%)

0 (0.0%)

Square Root

6

20 (avg. 3.3)

4 (66.7%)

0 (0.0%)

Twelve Days

8

37 (avg. 4.6)

6 (75.0%)

0 (0.0%)

Beer Song

8

38 (avg. 4.8)

5 (62.5%)

0 (0.0%)

Diamond

8

4 (avg. 0.5)

4 (50.0%)

0 (0.0%)

Luhn

7

22 (avg. 3.1)

4 (57.1%)

0 (0.0%)

Clock

6

48 (avg. 8.0)

3 (50.0%)

0 (0.0%)

Pig Latin

4

17 (avg. 4.3)

2 (50.0%)

0 (0.0%)

Sieve

5

6 (avg. 1.2)

2 (40.0%)

0 (0.0%)

Custom Set

10

49 (avg. 4.9)

5 (50.0%)

1 (10.0%)

Run Length Encoding

7

53 (avg. 7.6)

4 (57.1%)

0 (0.0%)

Atbash Cipher

5

5 (avg. 1.0)

3 (60.0%)

0 (0.0%)

Robot Simulator

8

21 (avg. 2.6)

6 (75.0%)

0 (0.0%)

Spiral Matrix

3

17 (avg. 5.7)

2 (66.7%)

0 (0.0%)

Queen Attack

8

117 (avg. 14.6)

5 (62.5%)

0 (0.0%)

Affine Cipher

4

28 (avg. 7.0)

1 (25.0%)

0 (0.0%)

Robot Name

5

2 (avg. 0.4)

2 (40.0%)

0 (0.0%)

Simple Linked List

7

14 (avg. 2.0)

3 (42.9%)

0 (0.0%)

Grade School

3

2 (avg. 0.7)

1 (33.3%)

0 (0.0%)

Circular Buffer

7

42 (avg. 6.0)

5 (71.4%)

0 (0.0%)

Binary Search Tree

4

2 (avg. 0.5)

1 (25.0%)

0 (0.0%)

Simple Cipher

3

13 (avg. 4.3)

2 (66.7%)

0 (0.0%)

Wordy

4

10 (avg. 2.5)

1 (25.0%)

0 (0.0%)

Rational Numbers

4

31 (avg. 7.8)

2 (50.0%)

0 (0.0%)

Two Bucket

4

4 (avg. 1.0)

1 (25.0%)

0 (0.0%)

Complex Numbers

3

20 (avg. 6.7)

2 (66.7%)

0 (0.0%)

Linked List

5

50 (avg. 10.0)

2 (40.0%)

0 (0.0%)

Minesweeper

6

25 (avg. 4.2)

4 (66.7%)

0 (0.0%)

Grep

3

25 (avg. 8.3)

2 (66.7%)

0 (0.0%)

Rectangles

4

5 (avg. 1.3)

2 (50.0%)

0 (0.0%)

Change

4

2 (avg. 0.5)

2 (50.0%)

0 (0.0%)

Forth

12

24 (avg. 2.0)

1 (8.3%)

1 (8.3%)

List Ops

5

119 (avg. 23.8)

5 (100.0%)

0 (0.0%)

64 unimplemented practice exercises

All Your Base

Alphametics

Binary Search

Book Store

Bottle Song

Bowling

Connect

Crypto Square

DOT DSL

Dominoes

ETL

Error Handling

Food Chain

Gigasecond

Go Counting

Hangman

House

Killer Sudoku Helper

Kindergarten Garden

Knapsack

Largest Series Product

Ledger

Lens Person

Markdown

Matrix

Meetup

Micro Blog

Nth Prime

OCR Numbers

POV

PaaS I/O

Palindrome Products

Pangram

Parallel Letter Frequency

Pascal's Triangle

Perfect Numbers

Phone Number

Poker

Prime Factors

Proverb

Pythagorean Triplet

REST API

Rail Fence Cipher

React

Rotational Cipher

SGF Parsing

Saddle Points

Satellite

Say

Scale Generator

Secret Handshake

Series

State of Tic-Tac-Toe

Strain

Sublist

Sum of Multiples

Tournament

Transpose

Tree Building

Variable Length Quantity

Word Search

Yacht

Zebra Puzzle

Zipper

Volunteers

19

ajoshguy

1,742

glennj

712

ErikSchierboom

174

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