Select featured exercises for Apps August

[ErikSchierboom]

Next month (August), will have the Apps August theme, which will feature a whopping 14 languages:

• ABAP
• CoffeeScript
• Dart
• Delphi
• Elm
• Java
• JavaScript
• Kotlin
• Objective-C
• PHP
• PureScript
• ReasonML
• Swift
• TypeScript

Due to the wide variety in languages, selecting exercises with a common them will be impossible, so let’s just try to find some not-too-difficulty exercises that require the least amount of tracks to add them.

This is the list of the shared exercises for those tracks, excluding hello-world and any previously featured exercises (It is likely that we’ll need some exercises to be added):
Note: I’ve excluded any exercises that were implemented by less than 7 tracks

exercise	abap	coffeescript	dart	delphi	elm	java	javascript	kotlin	objective-c	php	purescript	reasonml	swift	typescript
anagram
phone-number
atbash-cipher
pascals-triangle
rna-transcription
scrabble-score
triangle
all-your-base
beer-song
luhn
nth-prime
crypto-square
gigasecond
grains
minesweeper
nucleotide-count
prime-factors
run-length-encoding
diamond
grade-school
resistor-color
series
wordy
binary-search-tree
darts
matrix
meetup
perfect-numbers
pig-latin
say
transpose
bowling
flatten-array
isbn-verifier
kindergarten-garden
palindrome-products
queen-attack
sublist

[glennj]

The table in form for perhaps easier consumption:
A = abap
C = coffeescript
DA = dart
DE = delphi
E = elm
J = java
JS = javascript
K = kotlin
O = objective-c
PH = php
PU = purescript
R = reasonml
S = swift
T = typescript

exercise             A  C  DA  DE  E  J  JS  K  O  PH  PU  R  S  T
anagram              1  1  1   1   1  1  1   1  1  1   0   1  1  1
phone-number         1  0  1   1   1  1  1   1  1  1   1   1  1  1
atbash-cipher        1  1  0   1   1  1  1   1  1  1   1   0  1  1
pascals-triangle     0  1  1   1   1  1  1   1  1  1   1   0  1  1
rna-transcription    0  0  1   1   1  1  1   1  1  1   1   1  1  1
scrabble-score       1  0  1   1   1  1  1   1  1  1   1   0  1  1
triangle             0  1  1   1   1  1  1   1  1  1   1   0  1  1
all-your-base        0  0  0   1   1  1  1   1  1  1   1   1  1  1
beer-song            1  1  1   1   0  1  1   1  1  1   0   0  1  1
luhn                 0  1  1   1   1  1  1   1  1  1   0   0  1  1
nth-prime            1  1  1   1   0  1  1   1  1  1   0   0  1  1
crypto-square        1  0  0   1   0  1  1   1  1  1   1   0  1  1
gigasecond           0  0  1   1   1  1  1   1  1  1   0   0  1  1
grains               1  0  0   1   1  1  1   1  1  1   0   0  1  1
minesweeper          1  0  1   1   0  1  1   1  0  1   0   1  1  1
nucleotide-count     0  1  0   1   1  1  1   1  1  1   0   0  1  1
prime-factors        1  0  1   1   0  1  1   1  1  1   0   0  1  1
run-length-encoding  1  0  0   0   1  1  1   1  1  1   0   1  1  1
diamond              0  0  1   1   0  1  1   1  0  1   1   0  1  1
grade-school         0  0  0   1   1  1  1   1  1  1   0   0  1  1
resistor-color       1  0  1   1   0  1  1   1  0  1   0   1  0  1
series               0  0  0   1   1  1  1   1  1  1   0   0  1  1
wordy                0  1  0   1   1  1  1   1  0  1   0   0  1  1
binary-search-tree   0  1  1   1   0  1  1   1  0  0   0   0  1  1
darts                1  0  1   1   0  1  1   1  0  1   0   0  0  1
matrix               1  0  0   1   0  1  1   1  0  1   0   0  1  1
meetup               0  0  0   1   0  1  1   1  1  1   1   0  1  0
perfect-numbers      0  0  0   1   0  1  1   1  1  1   0   0  1  1
pig-latin            0  0  1   1   0  1  1   1  0  1   0   0  1  1
say                  0  0  0   1   1  1  1   1  1  0   0   0  1  1
transpose            0  0  0   0   1  1  1   1  1  1   0   0  1  1
bowling              0  0  0   1   1  1  1   0  0  1   0   0  1  1
flatten-array        0  0  0   0   0  1  1   1  1  1   0   0  1  1
isbn-verifier        0  0  1   1   0  1  1   1  0  0   0   0  1  1
kindergarten-garden  1  0  0   1   0  1  1   1  0  0   0   0  1  1
palindrome-products  0  1  0   1   0  1  1   0  0  1   0   0  1  1
queen-attack         0  1  0   1   0  1  1   0  0  1   0   0  1  1
sublist              0  0  0   0   1  1  1   1  1  0   0   0  1  1

[Meatball]

If there is a need for a specific exercise for coffescript, can I help with adding that.

[ErikSchierboom]

As a first attempt, maybe the following 5 exercises would be viable options:

• anagram: missing in PureScript
• phone-number: missing CoffeeScript
• triangle: missing in ABAP and ReasonML
• rna-transcription: missing in ABAP and CoffeeScript
• scrabble-score: missing in CoffeeScript and ReasonML

This gives the student a nice mixture of strings (anagram, phone-number, rna-transcription, scrabble-score), numbers (triangle, scrabble-score), possibly using regular expressions (anagram, phone number), iteration (rna-transcription, scrabble-score) and collections (scrabble-score).

Thoughts?

[ErikSchierboom]

I’m adding anagram to the PureScript track: Add `anagram` exercise by ErikSchierboom · Pull Request #271 · exercism/purescript · GitHub

[glennj]

• anagram
• phone-number
• triangle
• rna-transcription
• scrabble-score

Are these featured exercises locked-in for August?

[ErikSchierboom]

They are! Unless there are any big objections.

[vaeng]

That would mean we would still need the following exercises:

• abap:
  rna-transcription , triangle

• reasonml:
  scrabble-score, triangle

[Meatball]

I did Coffeescript in the beginning of the month so all of them can be crossed out.

[Meatball]

And Erik did purescript

[ErikSchierboom]

@vaeng

That would mean we would still need the following exercises:

• abap:
  rna-transcription , triangle
• reasonml:
  scrabble-score, triangle

Yes. I don’t think I can do ABAP and I haven’t had time for ReasonML. If any can help, it would be much appreciated!

[BethanyG]

I’ve done triangle & @Meatball has done scrabble-score for ReasonML.

But there is still a timeout issue for the ReasonML test runner. Nothing will run when submitted via the website.

I’ve been trying to troubleshoot it, but I can’t even get the docker container to pick up and test a solution locally at the moment - everything always fails. I will continue to poke at it.

[ajborla]

Working on the ABAP exercises.

@ErikSchierboom Done - Triangle and RNA Transcription

[glennj]

I love this. Every month the community comes together to help fill the gaps. Great teamwork!

[ajborla]

Hi @ErikSchierboom ,

I was hoping the ABAP PR, posted above, might be looked at ?

I included it by re-editing the original post, but perhaps that means no notification is sent ?

Thank you.

[ErikSchierboom]

@ajborla Merged!

[ErikSchierboom]

The triangle PR has been merged! Thanks.

[ajborla]

Thank you ! A quick question: Is authorship recognized via a batch job, or is it done when the PR is merged ? If the latter, it does not appear to have occurred in this instance.

[iHiD]

Thanks for alerting us. There was a race condition. I’ve fixed it with a PR here: Fix race condition in creating reputation tokens by iHiD · Pull Request #5874 · exercism/website · GitHub

[iHiD]

@ErikSchierboom I think our daily resync jobs probably catch this fine, but I just thought I’d mention it for you to double-check