Vectors concept

[colinleach]

An earlier draft of this was growing out of control, so I cut it down to (mostly) just what is needed for Elyse's Enchantments.

On which subject: that draft exercise will need changing. Test 2 currently uses pairs, a concept well beyond this stage of the syllabus.

[colinleach]

Change of plan. Revisiting this a few months after I wrote it, I decided the name should reflect the content, which is mostly just Vectors. I changed the about.md and moved the directory from concepts.wip/arrays to concepts/vectors. This broke the config.json, which I'll fix in the next day or two. Meanwhile, I'm working on elyses-enchantments and will copy the introduction.md from that to this Concept.

This frees the name arrays for a later Concept on the multidimensional case.

[colinleach]

I think this is about ready to review. It's probably easier to merge this before elyses-enchantments, which I'll add soon.

[depial]

Just a potential typo in question

[depial]

On the website, I can't unlock Vectors in the syllabus after having finished everything above, and when I look at the Vector concept on the website it says there are 0 Exercises (although Elyses Enchantments is listed as completed along side), see below:

My best guess is that there may be an issue with the config.json being incomplete here, but I'm not sure. @colinleach have you seen this before?

[colinleach]

That is very weird! If I hover my mouse over it on the Concept tree, it shows 1 exercise (same as all the other concepts). It's only after opening the Concept page that, like you, I see 0 exercises.

I can't see anything wrong with the config.json - though after all my blundering around in there over the past few days, I seem to have lost all ability to look at JSON. This is a new version of an old exercise, so I worry that something has got tangled in the website.

I'll have another think about this tomorrow. We may then need to escalate this to people who understand the inner workings of the website (pretty much only Jeremy, unfortunately).

[depial]

I realized that I was thinking about julia/config.json which has more information. I agree with you that .meta/config.json doesn't seem to have anything wrong with it.

The other weird thing is that Vectors doesn't appear unlocked after finishing Conditionals, but I can still access it and do the exercise. When I hover over Vectors in the syllabus, it says "Learn to unlock this concept" where it should say "Learn conditionals to unlock this concept". Maybe a problem lies there as well?

Looking at Chessboard, I see:

I'll also try to think about this more tomorrow, but I'm afraid I know less about the inner working than you do.

[colinleach]

I looked at both JSON files, without finding a problem. This is currently looking like something well above our pay grade! (Ironic, for unpaid volunteers).