morning

Morning :)

moin moin

morning

mawnmawn

Morning ✨ ☕ ✨

morning 🙂

Morning all.

Hello All, good "morning" 😉

morning all!

rcfotd:

-------------------------
clojure.core/subs
([s start] [s start end])
  Returns the substring of s beginning at start inclusive, and ending
  at end (defaults to length of string), exclusive.

Why was subs not designed to work on sequences? What does one use to perform subs-like operations on a sequence?

there is subvec for vectors

drop + take?

didn't know about subvec, cheers @tmulvaney

iirc there are caveats with subvec

like it retains a reference to the underlying vector

yes that is correct it does hold a reference so its not memory efficient

subs calls down to Java string fns

It does hold a reference (preventing garbage collection) but subvec it's O(1) space+time. The caveat is that if you are splitting a large vector v into tiny bits with subvec with the idea of never using v again, you probably want to (into [] (subvec i j v)) before moving forward.

Anyone here have any recent experience of using clojure on android? Have done some quick googling but all the links that turned were from circa 2015. I cam across this https://github.com/clojure-android but it seems to have been abandoned I know there is a #clojure-android channel but that doesn't look to have any recent activity

there was a london clojurians meet up where you got to do your own android app in clojure

i found it to be quite fun, but really slow to start

i think swiftkey might use it? i could well be wrong

that was years back however

i think we used https://github.com/clojure-android/lein-droid

I’ve seen a talk about using http://cljsrn.org/

https://www.youtube.com/watch?v=ELM_eKZXl3M ^^ was at euroclojure 2017

lein-droid doesn't look like it's been touched for a year or so and builds are currently marked as failing so it doesn't give me a lot of confidence.

I was wondering whether people have lost interest and are using react-native instead

@shan thanks for the EuroClojure link - I'll take a look

In my case I was looking at using it on an embedded system (a robot) so react native isn't a good fit

I think cljsrn is the way to go these days... and you get iOS as well to a certain extend

hmm didn't read that last sentence... doh

@davesnowdon is the robot running Andriod?