Clojurians Log v2

Align map & let or not?

yes for me

I wrote a cljfmt option to purge repos of this heresy 🙂

I understand why it's perhaps not a best practice, but I just like how it looks 🙂

Can you give an example of both alternatives?

;; aligned
{:bla-bla 1
 :bla     2}

;; not aligned
{:bla-bla 1
 :bla 2}

@mpenet because git diff?

I usually don't but sometimes I do, when I'm really bored

no, often the aligned version ends up in a mess, and visually I prefer to have things paired close to each-other

personally I think it's easier to read, but I know it's quite personal, some people like one or the other

Maybe this should be an editor feature: render like you would like to see it, without touching the source code

non-aligned for moi

for git diffs there are ways to ignore whitespace

@borkdude you mean, like, tabs!

like tabs, but without annoying other people

cljfmt can enforce one way (non aligned via :remove-multiple-non-indenting-spaces? ) not the other way around

it's a bit wild with the aligned version, you have to decide on thresholds if you want to do it consistently. It's not as easy for tooling

tools, by default, align afaict; probably because bbtasov's https://guide.clojure.style/#bindings-alignment

my annoyance is with git, a new entry can make the whole set change

emacs (cider) doesn't align by default, not in the way we mean with "align" on this thread at least

I think that's a bad example

both vars are of equal length, i.e., thing1 and thing2

My reading of that is to align the vars, not the evals

as shown in the good and bad examples

(let [thing1 "some stuff"
      another-thing "other stuff"]
  (foo thing1 another-thing))

would be my interpretation of what is the intent.

sure, but that shows alignment of the "key", not the value

https://clojurians.slack.com/archives/C03RZGPG3/p1608734431250100

I think we're talking about the value part

Yes, although the example given shows the vars being the same length, and the alignment affecting the names. It would have been better to show the vars of different lengths and either keep the values together, close - or to align the values to clearly show that the names of the keys are not important.

(let [thing1        "some stuff"
      another-thing "other stuff"]
  (foo thing1 another-thing))

like that.

@dharrigan https://github.com/bbatsov/clojure-style-guide/issues/219

yup

fwiw I just turn the setting on in clojure-mode on emacs ( (setq clojure-align-forms-automatically t) ) and never need to tweak or configure it from there. If something gets really awkward I just add an extra line which resets the alignment level

(let [thing-one-is-really-long 1
      another-long-one         5
      x                        4
      abc                      4])

(let [thing-one-is-really-long 1
      another-long-one         5
      
      x   4
      abc 4])

i'm making a geocache puzzle, and the solution of the puzzle is a list of numbers (the coordinates for the next cache). i'm looking for a simple checksum operation that can be used to verify the results, does anyone know a simple checksum that can be computed using pen and paper?

the list to verify is about 10 digits

there's the one that numerology uses: keep recursively summing digits until you have just one digit

that's easy on pen and paper, and a lot of people can do it in their head

The https://en.wikipedia.org/wiki/Luhn_algorithm while easy to do on paper, is probably not possible to do in one's head.