Open ErikSchierboom opened 3 years ago
⚠ The spec for Practice Exercises has changed. Besides having a prerequisites
field, each Practice Exercise should now also have a practices
field, which should list the slugs of Concepts that this Practice Exercise actively allows a student to practice. See the spec for more information.
The issue's text has been updated to reflect the updated spec.
A recommendation from the maintainers of other tracks (who already completed this task) was to fill all prerequisites first. Then a small script can report a list of concepts and their related exercises. That list can be used as a starting point to think about which concepts to set in "practices". For example, there might be 20 exercises that have "strings" as prerequisite but only max. 8 should have strings in "practices". That means we need to pick the 8 exercises, that seem the best fit for practicing strings.
I‘d like to work on this issue.
@TristanAppDev Thanks for the interest in contributing.
Some additional thoughts on this task:
Try and choose 3 - 8 Exercises that practice each Concept
rule of thumb for all concepts. But it's important to identify what those concepts are at this stage. We can then think on how we can have more exercises practicing that concept, either by creating new exercises or adjusting existing ones. As part of this task, if you can identify those concepts without enough practice exercises, that would be a great help already.@TristanAppDev I don't want to discourage you from working on this but I want you to be aware what is involved here as this task might sound easier than it actually is.
To define a set of prerequisites for a practice exercise you need to have a good understanding of the existing concepts and the content they cover. Then you need to form an idea in your head about the minimal set of concepts that is needed to write a reasonable solution to the given exercise. What helps with that is looking at your own solution to the exercise (if you have one), the example solution for the exercise in the repo (however keep in mind that one can be really bad because it only exists for CI purposes) and the community solutions on the website (since stars aren't used much, there is often no way to filter for the good ones tough). @andrerfcsantos Maybe you can recommend some Exercism users with good public solutions to lots of exercises. That helps a lot with this task. (That includes mentioning yourself if this applies to you. :wink: )
If you use some existing solution as reference, it would be great if you could provide the respective link in the PR description. Those are very valuable for the reviewer to check your proposal and later on when we want to create/improve more mentor notes.
Please don't include more than ~8 exercises per PR (and prerequisites only for now is fine). Reviewing those couple of additional words means repeating parts of the thought process described above.
Thanks @junedev after reading your explanation I trink it‘s too soon for me to work on this issue.
This issue is part of the migration to v3. You can read full details about the various changes here.
Exercism v3 introduces a new type of exercise: Concept Exercises. All existing (V2) exercises will become Practice Exercises.
Concept Exercises and Practice Exercises are linked to each other via Concepts. Concepts are taught by Concept Exercises and practiced in Practice Exercises. Each Exercise (Concept or Practice) has prerequisites, which must be met to unlock an Exercise - once all the prerequisite Concepts have been "taught" by a Concept Exercise, the exercise itself becomes unlocked.
For example, in some languages completing the Concept Exercises that teach the "String Interpolation" and "Optional Parameters" concepts might then unlock the
two-fer
Practice Exercise.Each Practice Exercise has two fields containing concepts: a
practices
field and aprerequisites
field.Practices
The
practices
key should list the slugs of Concepts that this Practice Exercise actively allows a student to practice.strings
). In those cases we recommend choosing a few good exercises that make people think about those Concepts in interesting ways. For example, exercises that require UTF-8, string concatenation, char enumeration, etc, would all be good examples.Prerequisites
The
prerequisites
key lists the Concept Exercises that a student must have completed in order to access this Practice Exercise.strings
,optional-params
,implicit-return
.loops
orrecursion
), the maintainer should choose the one approach that they would like to unlock the Exercise, considering the student's journey through the track. For example, the loops/recursion example, they might think this exercise is a good early practice ofloops
or that they might like to leave it later to teach recursion. They can also make use of an analyzer to prompt the student to try an alternative approach: "Nice work on solving this via loops. You might also like to try solving this using Recursion."Although ideally all Concepts should be taught by Concept Exercises, we recognise that it will take time for tracks to achieve that. Any Practice Exercises that have prerequisites which are not taught by Concept Exercises, will become unlocked once the final Concept Exercise has been completed.
Goal
Practices
The
"practices"
field of each element in the"exercises.practice"
field in theconfig.json
file should be updated to contain the practice concepts. See the spec.To help with identifying the practice concepts, the
"topics"
field can be used (if it has any contents). Once prerequisites have been defined for a Practice Exercise, the"topics"
field should be removed.Each practice concept should have its own entry in the top-level
"concepts"
array. See the spec.Prerequisites
The
"prerequisites"
field of each element in the"exercises.practice"
field in theconfig.json
file should be updated to contain the prerequisite concepts. See the spec.To help with identifying the prerequisites, the
"topics"
field can be used (if it has any contents). Once prerequisites have been defined for a Practice Exercise, the"topics"
field should be removed.Each prerequisite concept should have its own entry in the top-level
"concepts"
array. See the spec.Example
Tracking
https://github.com/exercism/v3-launch/issues/6